轮机英语真题46期,甲类三管轮
(完整word版)三管轮轮机英语听力与会话问答要点参考
青远张老轨整理提供！问答题:每题6分根据本人多年参加轮机英语评估口语部分的批改工作经验，以下问答题的重复率较高.要点：一定将题目听清楚后再回答问题,回答问题要简明清晰，发音正确。
正确操作录音系统，避免“无声”现象，造成无成绩。
另外朗读：吐字清晰，语速适中,将句子读完整，别读破句子，掌握好语调.文章前五句话最重要，一定读好，这样能给评估员一个良好的印象.口述：看清题目,围绕主题叙述，尽量多说与主题相关的话语,千万别跑题。
一般情况下朗读得分:13~15分差生得分一般在10分以下口述得分:13~15分差生得分一般在10分以下问答得分：应在35分以上。
1。
how long have you worked on board？I have worked on board for 10 years.2. what is your marital status？how many departments are there on board？I am married. There are three departments on board.3. how many people are there in your family？ Are you married？There are there people in my family。
Yes，I am married.4.how many countries have you ever been to?I have been to seven countries。
5. how many importment canals are there all over the world？Three 。
the pamama ，suez and kiel。
6.can you tell me what is the most important thing for a seafarer。
轮机英语三管轮试题甲板机械
轮机英语三管轮试题甲板机械1907. _____ are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches 1908. _____ are used for hauling in or letting out the wires which fasten the ship to the shore.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches 1909. _____ unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker.A. The cable lifterB. The hoisting motorC. The topping wireD. The life-raft 1910. _____, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.A. The winch motorB. The band brakeC. The winch barrelD. The anchor capstan1911. The_____ is used for hauling in or letting out the wires or ropes.A. windlassB. anchor capstanC. turning gearD. winch barrel1912. Anchor_____ are used in some installations where the cable lifter rotates about a vertical axis.A. windlassesB. drumsC. capstansD. warp ends1913. Anchor capstans are used in some installation where the cable lifter rotates about a _____.A. horizontal axisB. crankshaftC. vertical axisD. camshaft1914. In the cargo winch, spur reduction gearing transfers the motor drive to_____.A. the toping lightB. the board brakeC. the fail-safeD. the barrel shaft 1915. If an anchor windlass has been idle for some time, you should_____.A. repack all valve stemsB. lubricate it prior to useC. replace the foundation boltsD. balance the warping heads1916. If the pump for a hydraulic anchor windlass is over heating, the cause may be_____.A. increased pump speedB. excessive pump discharge pressureC. too low of a tilting box angleD. low pump speed1917. The part of the anchor windlass that engages theanchor chain for lifting is called the _____.A. warping headB. fairleadC. wildcatD. capstan1918. If the pump for a hydraulic anchor windlass is overheating, the cause may be_____.A. excessive drive motor speedB. excessive pump discharge pressureC. too low of a tilting box angleD. insufficient drive motor speed1919. Auxiliary machinery covers everything onboard except_____.A. main enginesB. main boilersC. pipes and fittingsD. A and B1920. Mooring winches are often combined with_____ units so that one prime mover drives both.A. craneB. hatch coverC. windlassD. steering gear1921. The most common forms of main drive used on deck auxiliaries are_____.A. steam plants, electric motors and compressed airB. diesel engine, hydraulic machinery and compressed airC. steam plants, electric motors and hydraulic machineryD. diesel engines, steam plants and hydraulic machinery1922. Most anchor handling equipment incorporates_____ formooring purposes. A. cable lifters B. spur wheels C. bollard D. warp ends1923. The duty of a deck winch is to lift and lower a load by means of a fixed rope on_____.A. a warp endB. a mooring winchC. a worm gearD. a barrel课后练习1924. _____are used to handle anchors and chains.A. cargo winchesB. mooring winchesC. windlassesD. cargo hatches1925. _____are used for hauling in or letting out the wires which fasten the ship to the shore.A. cargo winchesB. mooring winchesC. windlassesD. cargo hatches 1926. When the power is shut off, the wire______.A. becomes slackB. can not be paid out unless the brake is overhauled or recover wire unless manually operatedC. will be let out because the brake is out of workD. may be pay out due to no power1927. In an automatic mooring winches, the wire is paid off the barrel at a _______tension and is recovered at_____ tension.A. lower/higherB. maximum/higherC. predetermined minimum/higherD. predetermined minimum/lower 1928. The spur geared mooring winches have advantages over worm geared ones in_______A. higher efficiency of the gear train while reversingB. the higher gear ratioC. the multi-start featureD. higher recovering speed大连新题1929. The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when _______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retired at the maximum rate1930. ____with various arrangements of barrels are the usual mooring equipment used on board ships.A. CranesB. WinchesC. CapstansD. Windlass1931. The ___is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.A. cranesB. winch barrelC. capstansD. windlass1932. In automatic ____. The winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.A. cranesB. windlassC. capstansD. mooring winches1933. The majority of automatic mooring winches ate spur geared to improve the Backward efficiency of the gear train for renderingA. spur gearedB. screw gearedC. worn gearedD. belt driven1934. Worm geared automatic mooring winches are ____ as the multi-start feature reduces the advantage of worn gear i.e. high gear ratioA. popularB. commonC. in lead positionD. uncommon 1935. The rotating units of a split windlass consists of a ___with shaped smug to grin the anchor cable, a mooring drum for paying out to letting go of mooting wires and a warp end for warping duties.A. canesB. mooring barrelC. capstansD. cable lifter1936. The cable lifer, mooring drum and warp end of a split windlass may be separately engaged or disengaged by means of a ____A. dog clutchB. pair of gearsC. worm gearD. turning gear添加题1937. _______ is put into use in the late years to maintain a preset tension in a mooring line after a ship after a ship has been tied up at a pier.A the large-tension mooringB the small-tension mooringC the variable-tension mooringD the constant-tension mooring1938. In the constant-tension mooring, the mooring lines holding the ship to the pier will maintain a constant tension even with changes in tide or ship’s draft, _______A without the necessary of manually adjusting the linesB without the necessity of automatically adjusting the linesC with the necessity of manually adjusting the linesD with the un-necessity of automatically adjusting the lines1939. Which gears must be maintained in proper alignment to prevent _______ A overheating of the lube oil B over-speeding of motorC wear on the braking systemD damage to teeth。
三管轮考证轮机英语41-48期试题教材
中华人民共和国海事局2006年第3期海船船员适任证书全国统考试题(总第41期)科目：轮机英语试卷代号：805适用对象：无限、近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至74题，每题1分，第75题至78题，每题1.5分,第79题至80题, 每题10分。
一、单项选择题1. A diesel engine is similar to a gasoline engine except that the former has no ______.A. cross-headB. spark plugC. connecting rodD. cylinder2. A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a______.A. slow-speed dieselB. medium-speed dieselC. high-speed dieselD. constant-speed diesel3.Which of the diesel engine components listed increases air density and helps to improve engine operating efficiency?A. ImpellerB. CompressorC. After-coolerD. Exhaust diffuser4.For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle dieselengine because ______.A. it has a longer power strokeB. more air gets into the cylinder each strokeC. it develops twice as many power strokes at the same speedD. higher combustion pressure is developed5.The intake valves in a diesel engine are reseated by ______.A. cam followersB. push rodsC. combustion gasesD. valve springs6.According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided into two mainsystems, namely, the constant-pressure system and ______.A. the pulse-phase systemB. the pulse Doppler systemC. the pulse systemD. the pulse interval system7.An over-speed safety device is usually fitted to a generator engine for______in the event of over-speed.A. cutting power off the engineB. increasing the fuel pump settingC. braking the crankshaftD. stabilizing the ship speed8.What preventative maintenance should be done frequently to diesel engine starting air receivers?A. Drain the accumulated moisture.B. Test the relief valves.C. Watch the temperature to prevent fluctuations in pressure.D. Clean the interior to remove oil and foreign matter.9.Immediately after any diesel engine is started, the engineer should check the ______.A. crankcase pressureB. lube oil pressureC. seawater pressureD. exhaust temperature10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears11.In motor ship, ______is often used to recover some of the heat carried in the exhaust gases from the main engine.A. an diesel oil heaterB. a waste heat boilerC. a fresh water generatorD. a donkey boiler12.An exhaust gas bypass is installed on a waste heat boiler in order to ______.A. bypass exhaust gas at high loads to prevent excessive back pressureB. bypass a portion of the exhaust gas at peak loads for better efficiencyC. recycle exhaust gas to the turbochargerD. minimize moisture condensation in the boiler gas passages at low loads13.Prior to lighting off a cold automatically fired auxiliary boiler, you should ______.A. check and regulate the water levelB. close the air cock once fires are litC. blow down the gage glassD. assure protective steam flow14.Flame failure in an automatically fired auxiliary boiler can mostly result from a/an ______.A. incorrect electrode settingB. incorrect nozzle positionC. clogged fuel nozzleD. broken high tension lead15.Waterside scale in a fire-tube boiler may cause ______.A. increased heat transferB. fireside erosionC. high steam demandD. overheated tubes16.Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating pump? I. Itsdischarge is continuous; II. It has no internal valves; III. Upon accidental closing of discharge valve, excessive pressure will not build upA. I, IIB. II, IIIC. I, II, IIID. II only17.Why are removable sleeves installed on centrifugal pump shafts?A. They make it easier to replace the pump shaft packing.B. They can be economically replaced as they wear out.C. They can be removed when it is necessary to lighten the weight of the pump.D. They increase the strength of the shaft.18.If one of the bilge system manifold valves does not properly seat, the ______.A. bilge well connected to that valve, plus the second bilge well being pumped will be completelyemptiedB. bilge system will lose vacuum and prevent the other bilges from being pumped outC. bilge well aft connected to that valve will siphon(虹吸) its contents to the forward bilge wellsD. discharge pressure will be too high.19.Which of the listed statements is correct concerning the starting of centrifugal pumps?A. They should always be started with the discharge valve closed.B. They should always be started with the discharge valve opened.C. A priming pump is always required to flood the impeller suction.D. They should always be started with the sealing line valves closed.20.The simplest method to use for determining if a centrifugal pump is operating as designed, is to ______.A. closely observe the pump discharge temperatureB. close off the discharge valve, and watch for a rise in pressureC. momentarily close off the suction valve, and watch for a rise in pressureD. use a clamp on ammeter and compare the readings to past records21.Which of the following modes of heat transfer does NOT require any physical contact between a warmer and acooler substance?A. RadiationB. ConductionC. Natural convectionD. Contact directly22. A re-heater in an air conditioning system functions to ______.A. control inlet air temperatureB. control inlet air volumeC. maintain relative humidity at 15%D. restore conditioned air temperature to a comfortable level23.In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primaryrefrigerant can be increased by ______.A. increasing refrigerant pressure in the coilB. increasing chilled water flow through the coolerC. sub-cooling the refrigerant in the condenserD. superheating the refrigerant in the compressor24.Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of______.A. wax precipitation in the lube oilB. contamination by dust, scale, or moistureC. refrigerant bubbles in the lube oilD. refrigerant reducing the lube oil viscosity25.Placing a filter on the ______of an oily water separator will “polish” the discharge but overloading must be avoided.A. suction sideB. discharge sideC. by-pass pipeD. sampling pipe26.When started, a complete oily water separating unit is first filled ______.The oily water mixture is then pumpedthrough the inlet pipe into the coarse separating compartment.A. with dirty waterB. with clean waterC. by oily waterD. by mixed water27.Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler28.The ______is used to burn oil sludge.A. clarifierB. oil/water separatorC. incineratorD. distiller29.Most marine biological sewage treatment plants consist of all the following statements except ______.A. aeration tanksB. settling tanksC. disinfection agent （消毒剂）D. anaerobic bacteria (厌氧菌)30.For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the ______.A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface31.The ______of the gravity disc is too big. It cause oil to flow through the water outlet. We changed the disc and nooil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder32.The advantages of flash type evaporators, as compared to submerged tube type evaporators, include ______.A. less internal corrosion because of lower brine densityB. higher temperature evaporation for lower salinity of the distillate producedC. less scale formation in a flash evaporatorD. less feed-water required for a flash evaporator33.Distilled water from an evaporator may be discharged into a drinking water tank ______.A. through a detachable hose connectionB. after passing through an activated charcoal filterC. after chemical analysis shows it is fit for consumptionD. through a solenoid operated three-way valve34.What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve35.In a radial piston pump, reversal and control of fluid flow are accomplished by moving the ______.A. central valveB. radial plungerC. floating ringD. cylinder body36.In a general cargo crane, ______is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. the fan moter37.______are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches38.The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum andshould slip only when ______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retrieved at the maximum rate39.Dual (双的)electro-hydraulic steering units usually operate ______.A. with both pumps on line at the same time B．with one pump on standbyC．with the follow-up gear disconnected D．only when the rudder is moved amidships40.One factor that determines the frequency of an alternator is the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage41.An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship asa ______.A. magnetic amplifierB. ship's service alternatorC. three-wire DC generatorD. saturable core reactor42.Current changing in direction and rising and falling in value is ___ .A. D.C.B. A.C. C. generatorD. fresh watergenerator43.Equal power factors on paralleled AC generators are maintained by an automatic ______.A. voltage regulatorB. reverse power relayC. reverse current relayD. governor control switch44.______shall be continuously powered and shall have an automatic changeover to a stand by power supply in case ofloss of normal power supply .A. Cooling systemB. Alarm systemC. The air conditioning installationD. The mooring equipment45.Switchboards may be of the dead-front type in which all live parts are installed behind ______and only theoperation handles and instruments are on the frontA. the capstanB. the collectorC. the panelsD. the surface46.The emergency generator or emergency battery is connected to ______on most ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards47.The primary function of an electric motor is to ______.A. develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance48.Electrical leads and insulation on a motor should be painted with ______.A. heat-resisting acrylicB. heat-resisting aluminumC. insulating varnishD. insulating white lead49. A circuit breaker and a fuse have a basic similarity in that they both ______.A. can be reset to energize the circuitB. should open the circuit when overloadedC. will burn out when an over current flow developsD. should short the circuit when overloaded50.Electric circuits are protected against short circuits by means of a/an _______.A. diode(二极管)B. amplifierC. circuit breakerD. capacitor51.The electrolyte in a lead-acid storage battery consists of distilled water and ______.A. hydrogen chlorideB. calcium chlorideC. sulfuric acidD. muriatic acid52.When under maneuvering conditions with the machinery being manually operated the control unit or console shouldbe ___.A. automatically controlledB. off powerC. continuously mannedD. continuously unmanned53.______is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed54.After “F.W.E.” is given, the air system is shut down, the ______gear put in, all drains and indicator cocks opened,and the cooling water kept running.A. steeringB. timingC. turningD. running55. A tank which has been sealed for a long period of time can be dangerous because ______.A. steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous vapors in the presence of moisture56. A class 'C' fire is burning ______.A. diesel oilB. magnesiumC. dunnageD. electrical insulation57.To prevent the spread of fire by conduction, you should ______.A. close all openings to the areaB. remove combustibles from direct exposureC. cool the bulkheads around the fireD. shut off all electric power58.The lengthening of a crack formed in the shell plating of a ship may be prevented by ______.A. welding brackets across both ends of the crackB. chipping out and slot welding the entire crackC. drilling a hole at each end of the crackD. cutting a square notch at each end of the crack59.After a fire has been extinguished in a closed space, personnel may safely enter the space when ______.A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment'sentranceB. a lifeline and explosion proof flash light are usedC. all smoke and toxic fumes are removed and an adequate oxygen supply is presentD. overhaul has been completed to remove any possible source of re-ignition60.While loading bunkers, you notice oil on the water near the vessel. What should you do first?A. Stop loadingB. Notify the harbor administration.C. Determine if the vessel is the source of the pollution.D. Start the main engine and put them in gear to disperse the spill.61.To anneal (退火)a copper gasket, you should heat the gasket _______.A. and quench it in oilB. cherry red and quench in waterC. and let it cool slowly in the airD. and carbonize it62.When a vessel is in dry-dock, the vessel's engineers should ______.A. examine the condition of the propellerB. chip and paint all hull protection zincsC. install new docking plugs in all cofferdamsD. inspect the hull for hogging or sagging63.The additional mark ______in the Classification Certificate for Machinery represents that personnel are watching atengine assembly control station and monitoring all machinery and electronic devices.A. BRCB. MCCC. AUT-0D. AUT-164.Which of the following operations must be entered on the Oil Record Book Part I?I. Routine discharge at sea of bilge water containing oil from the machinery spacesII. Bunkering of fuel oilA. I onlyB. II onlyC. both I and IID. neither I nor II65.Your ship’s certificates show that you did not do renewing work for certificate. All certificates have expired a fewdays before. Thus, your ship is ______.It follows therefore that she will ______.A. seaworthy / be fined in our portB. un-seaworthy/ be disassembled in our portC. seaworthy / be assembled in our portD. un-seaworthy / be detained in our port66.“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a ______.A. substandard shipB. standard shipC. over-standard shipD. reference ship67.When deciding the composition of the engineering watch, which may include _____appropriately, many factorsshall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief engineer68.The officer in charge of the engineering watch shall notify the chief engineer without delay______.A. in any emergency or if in any doubt as to what decision or measures to takeB. in the event of any impending action in ma chinery spaces that may cause reduction in ship’sspeedC. when isolating and bypassing machinery to be worked onD. co-operating with any engineer in charge of maintenance work69.At an unsheltered anchorage the chief engineer shall consult with ______whether or not to maintain an underwaywatch.A. the engineer officer in charge of watchB. the deck officer in charge of watchC. the masterD. the chief mate70.The term "moderate speed" was previously interpreted as meaning a speed which would enable a vessel______within half the range of visibility.A. stoppingB. being stoppedC. to stopD. to be stopped71.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.A. skimmersB. strawC. dispersantsD. sawdust72.The SOLAS Convention in its successive forms is generally regarded as the most important of all internationaltreaties concerning the ______ of merchant ships.A. pollutionB. economizationC. efficiencyD. safety73.The Company should ensure that the master is fully ______with the Company's SMS.A. familiarB. understandC. conversationD. confused74.______means the level for which minimum appropriate protective security measures shall be maintained at all times,threats and exchanging such information with appropriate Contracting Governments.A. Security level 1B. Security level 2C. Security level 3D. Security level 4二. 关联题（关联题题干下有4个小题，每小题4个选项）With many small package boilers, the automatic control sequence usually ensures that the boiler fire is initially ignited from a diesel oil supply, and changed over to the usual source when ignition is completed. With good management, to facilitate subsequent starting from cold, the fuel system of large boilers will have been flushed through with diesel oil when the boiler was on light duty immediately prior to being secured. When burning such diesel fuel it is essential for safety that only the correct (small) burner tip should be used. It should be kept in mind that if fire does not light, immediately shut off fuel and vent furnace.Complete ignition of fuel in the furnace is essential. The burner flame, the smoke indicator and the funnel should be frequently observed. With satisfactory combustion, the flame should appear in candescent （白热的）with an orange shade at the flame tip, and a faint brownish haze should show at the funnel. If on first ignition the flame is uncertain, badly shaped and separates from the primary swirler, momentary opening or closing of air register may correct.75. Small package boilers will use _______ while being lit up.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil76. After large boilers being secured, the fuel in the feeding line will be____.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil77. If large boilers were not lit up, _____.A. feed water to normal levelB. stop fuel supply immediately and purge the furnaceC. light the boiler againD. reset the burner78. An indication for a good combustion is ______.A. white smokeB. brown haze in the funnelC. orange flame tipD. swirl oil spray三、中译英（共2题，请将答案写在答题纸上）79. 船舶加油期间，如发现船舶附近水面有油或发生溢油事故，都应立即停止加油作业。
46873甲类三管轮轮机维护与修理46期试题
2008年第6期海船船员适任统考试题（总第46期）科目：轮机维护与修理试卷代号：8731．滑油变质，柴油机主轴承的轴承合金烧熔的故障属于——故障。
A．管理性B．突发性C．磨损性D．渐进性2．船机磨损故障期的特点是A．故障率低B、故障率随时间延长而增加C．时间较长D．故障率随时间延长而降低3．全寿命维修的核心思想是要求产品在————所耗费用最少。
A．全寿命周期内B．使用过程C。
修理阶段D．研制过程4．船舶机械有计划保养系统PMS对耐用型设备、低值设备、非生产型设备采用A．定时维修方式B．事后维修方式C．定期维修十视情维修D。
视情维修方式5．按规定周期结合坞内检验和保持船级的“年度检验”进行的检验修理是——。
A．小修B．航修C．检修D．大修6．为了减小摩擦与磨损．可在摩擦副间加入某种物质，使摩擦阻力降低的措施称之为。
A润滑B．摩擦C。
磨损D．摩擦学7 船舶机器在实际运转中，在、工况时摩擦副难以实现或保持液体动压润滑。
A．起动B．起动、停车C．低速运转D．高速运转8．利用摩擦表面的相对运动产生楔形油膜或挤压油膜来承受外部载荷并隔开摩擦表面，这种润滑称为A．流体动压润滑B．流体静压润滑C．强力润滑D．油脂润滑9．摩擦表面间的机械作用主要表现形式是I、变形11、剪切Ill、挤压Ⅳ、拉伸V、弯曲AⅡ＋ⅢBⅠ+Ⅱ+Ⅲ．C.Ⅰ+Ⅲ+ⅣD．Ⅰ＋Ⅲ＋IV＋V10．在摩擦过程中，运动副工作表面上的氧化膜不断地脱落使运动副零件金属损失的现象是一种磨损。
A腐蚀B．微动C．疲劳D．化学11．影响船机零件磨粒磨损的主要因素有A磨粒B．摩擦副材料C．润滑油粘度D．磨粒和摩擦副材料12．柴油机正常运转时气缸套与活塞环的摩擦表面间可能产生的磨损类型有一。
I、粘着磨损Ⅱ、腐蚀磨损Ⅲ、磨粒磨损IV、疲劳磨损V、微动磨损A．1＋11＋111．B.Ⅰ＋Ⅱ＋ⅤC．Ⅰ＋ⅢD．Ⅰ十Ⅳ＋V13．燃油中含有较高的————是引起气缸套产生磨粒磨损的重要原因。
甲类三管轮机英语考试真题
【单选】In some cases, when _____ exceeds a pre-set value ,the filter is automatically back flushed with air ,the displaced oil going to auxiliary drain tank where it is subsequently filtered and pumped back into the system A.the differential temperatureB.the differential pressureC.the temperature and pressureD.the pressure【单选】'Insufficiency of manning or insufficiency of certification of seafarers' is an identification of a/an ______.A.substandard shipB.standard shipC.over-standard shipD.reference ship【单选】'Loop,' 'uniflow,' 'crossflow,' and 'return-flow' are terms used to describe various types of ______.A.control air circuitsB.superchargingC.turbochargersD.scavenging【单选】 A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an ______.A.rotorB.statorC.exciterD.armature【单选】 A centrifuge arranged to separate two liquids is known as _____.A.an oily water separatorB.a purifierC.a centrifugal compressorD.a clarifier【单选】 A circuit breaker and a fuse have a basic similarity in that they both ______.A.can be reset to energize the circuitB.should open the circuit when overloadedC.will burn out when an over current flow developsD.should short the circuit when overloaded【单选】 A circuit breaker differs from a fuse in that a circuit breaker ______.A.melts and must be replacedB.is enclosed in a tube of insulating material with metal ferrules at each endC.gives no visual indication of having opened the circuitD.trips to break the circuit and may be reset【单选】 A circuit breaker is ______.A.a distribution device B.a lighting equipmentC.the indicating instrumentD.an isolating switch【单选】 A combination combustible gas and oxygen indicator is an instrument that measures the _____ of both combustible gas and oxygen; each is indicated on a separate binationsC.concentrationD.filters【单选】 A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an ______.A.double-acting engineB.opposed pistons engineC.single-acting engineD.horizontal acting engine【单选】 A fire involving aluminum powder would be a class _________. A.'A' fireB.'B' fireC.'C' fireD.'D' fire【单选】 A hydraulic motor may be driven by ______.A.an electric motorB.a diesel engineC.a compressorD.oil【单选】 A marine diesel engine is started by______.A.supplying high pressure oil into a hydraulic motorB.supplying high temperature air into the cylinderC.supplying high pressure air into the cylinderD.electrical igniting【单选】 A positive displacement pump is that where the volume of the pump chamber is alternately increased to ___ and then decreased to ___. A.draw the liquid in / force the liquid outB.force the liquid out / draw the liquid inC.suction/drawD.deliver/outlet【单选】 A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to ______.A.feel the high pressure fuel lineB.check the cylinder exhausts for white smoke frequentlyC.check the cylinder exhaust temperatureD.isolate each cylinder and inspect the injector【单选】 A segregated ballast system is a system where ______.A.all ballast is processed through the oily water separatorB.ballast is taken on and discharged through a separate main deck riserC.ballast and cargo tanks are separated by cofferdamsD.all ballast lines, tanks, and pumps are independent of those used for oil【单选】 A supercharged diesel engine, when compared to a similar naturally aspirated diesel engine, will develop an increase in ______.A.ignition lagB.engine horsepowerC.lube oil system pressureD.specific fuel consumption【单选】 A viscosity regulator used for an engine is usually provided in order to _____ for an engine burning heavy fuel oil.A.regulate the fuel supplyB.maintain a constant fuel viscosity at the fuel valvesC.maintain efficient coolingD.alter the fuel density【单选】According to STCW, the abilities specified in the standards of competence are grouped as seven functions at three levels of responsibility, which of the following is not one of the three levels?A.Navigational levelB.Management levelC.Operational levelD.Support level【单选】According to the MARPOL CODE, glass, metal and paper materials should ______.A.never be discharged into seaB.be discharged beyond 12 nm from nearest landC.be discharged limited in 12 nm from nearest landD.be discharged to sea【单选】According to the SOLAS convention, the bilge water system ______A.The bilge pump must connect the bilge well suction directlyB.should not pump out the water accumulated in the cargosC.should not be used for emergency drainage in case of ship collisionD.should be connected to the fire fighting system directly【单选】After 'F.W.E.' is given, the air system is shut down, the _____ gear put in, all drains and indicator cocks opened, and the cooling water kept running.A.steeringB.timingC.turningD.running【单选】After 'finished with engine', which of the following cannot be shut off by the duty engineer ?A.fuel oil booster pumpB.the main starting valveC.the sea chestD.the main cooling sea water pump【单选】After taking on fuel oil, the hoses should be disconnected and ______.A.draped over the fantail to dry outB.drained over the side and washed outC.drained into the bilges and washed outD.drained into buckets【单选】Air chambers are usually fitted to reciprocating pumps in order to ___.A.increase discharge pressureB.increase suction vacuumC.develop pulsation flowD.keep a steady rate of flow【单选】All crew's assigned emergency stations can be found on the ship's ______.A.muster listB.certificate of inspectionC.clearance papersD.permit to proceed【单选】All details of fuel bunkering or slop disposal must be entered in the _____.A.rough logB.engine room log bookC.oil record bookD.smooth log【单选】An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every ______.A.weekB.2 weeksC.monthD.3 months【单选】An incinerator auxiliary burner can not be ignited. It is NOT caused by______.A.carbon deposits on the electrodesB.defective atomizerC.low oil pressureD.too much water in the oil sludge【单选】An incinerator auxiliary oil-fired burner is used to ignite ______.A.the solidwaste or the oil sludgeB.the solid waste onlyC.the oil sludge onlyD.neither the solid waste nor the oil sludge【单选】Anchor capstans are used in some installation where the cable lifter rotates about a ______. A.horizontal axisB.crankshaftC.vertical axisD.camshaft【单选】As for oil separator, ______contributes to poor separation efficiency and carries over of water into the clean oil outlet.A.A too big gravity discB.A too small gravity discC.The high oil temperatureD.The high speed motor【单选】As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.A.increaseB.decreaseC.remain unchangedD.be greatest at dew point【单选】Before doing any work on a hydraulic system equipped with accumulators, you should ______.A.drain the accumulators and purge with oxygenB.bleed off all stored energy from the accumulators completely C.charge the accumulators to prevent system energy lossD.pump the hydraulic fluid into the accumulators to prevent fluid loss【单选】Before starting the engine, the air bottle should be ______.A.pumped up B.loaded C.discharged D.closed【单选】Biological sewage water treatment plant work on the_____.A.heating processB.settling processC.aeration processD.centrifuging process【单选】Cargo handling unit is rated according to the _____ to be lifted.A.cargo craneB.jibC.safe working loadD.oil pressure【单选】Centrifugal pumps, used to handle hot liquids, must have a minimum flow through them under all operating conditions. This flow serves to ______.A.prevent overheating and damage to pump rotating parts due to rubbingB.maintain the net positive suction head of the pumpC.maintain hydraulic differential in the pump impeller passagesD.purge the pump of non-condensable vapors and gases【单选】Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and _____ in size.A.expand B.extract C.increase D.decrease【单选】Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by ______.A.cylinder pression ringsC.piston skirtsD.oil rings【单选】Cooling of engines is achieved by circulating a cooling liquid around internal ______ within the engine.A.airB.passagesC.pipesD.means【单选】Dual electro-hydraulic steering units usually operate ______.A.with both pumps on line at the same timeB.with one pump on standbyC.with the follow-up gear disconnectedD.only when the rudder is moved amidships【单选】During ______ the gases are driven out of the cylinder by the piston.A.The suction strokeB.The compression strokeC.The expansion strokeD.the exhaust stroke【单选】During purification, if the operating water tank is empty, which of the following malfunctions will appear?A.Some oil will flow from the water outlet of the separator.B.There will be some water in the purified oil.C.Some oil will flow from the sludge outlet of the separator.D.If discharging the sludge, there will be no flushing water.【单选】Each crank is made up of two crank webs joined by a common ______ to which the bottom end bearing is fitted. A.throw B.crankshaft C.crankpin D.crosshead【单选】Each cylinder liner on the marine medium speed engines _____. A.is usually cooled by sea water B.can be replaced when worn out C.is in direct contact with the water in the bore of the cylinder D.can't expand when heated【单选】Electric wires should have each feature of the following except ______.A.flame retardantB.moisture resistantC.oil resistant D.low conductivity【单选】Engine speeds at which resonance can occur are termed ______.A.maximum speedsB.full speedsC.sea speedsD.critical speeds【单选】Equal power factors on paralleled AC generators are maintained by an automatic ________.A.voltage regulatorB.reverse power relayC.reverse current ernor control switch【单选】Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _______.A.an air bound fuel systemB.damage to cylinder heads and pistonsC.excessive fuel injectionD.excessive air valve lift【单选】Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ______.A.prolong the ignition delay periodB.ensure the beginning of fuel injectionC.thoroughly utilize the air chargeD.allow controlled fuel combustion【单选】Fuel is ignited into a diesel engine cylinder by ______.A.a spark plugB.injectorsC.the heat of compressionD.increasing jacket water temperatures【单选】Full travel of the electronic governor actuator linkage must exceed the ______ travel of the engine fuel control to ensure that the engine fuel control is capable of moving from the 'off' position to 'full fuel'. A.minimumB.averageC.maximumD.half【单选】Heavy residual fuel oils are heated prior to centrifuging to ______.A.reduce fuel weightB.increase specific gravityC.separate fuel from lube oilD.reduce fuel viscosity【单选】How can the chance of contaminating hydraulic fluid be decreased when working on hydraulic systems?A.Clean the fittings before they are disconnected.B.Place drip pans under leaky fittings.C.Seal any cracks in lines with Permatex.D.Coat all threads with graphite oil. 【单选】ISM code has applied to the ships as follows exceptA.Passenger shipsB.Bulk freight vessels of 500 gross tons or moreC.Warship of 500 gross tons or moreD.High-speed craft of 500 gross tons or more【单选】If a cam-controlled engine has a normal injection pressure at rated speed, the injection pressure will be ______ at slow speed.A.a little lower B.a little higherC.too lowD.exactly the same【单选】If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST ______.A.secure the ventilationB.find a soda acid extinguisherC.shut off the fuel oil supplyD.secure the generator【单选】If an oil spill occurs on deck, you should ______.A.cover the area with foamB.cover the area with absorbent materialC.wash down immediately with a fire hoseD.wash down immediately with an oil dispersing solvent【单选】If found oil when we open low oil level plug of separator, it indicates _______.A.the separator is overloadedB.the monitor equipment of separator failsC.the discharge pump of separator can not workD.the temperature of oil water is low【单选】If the engine is at rest during maneuver for an extended period the engine should _______, of course, that navigational circumstances permit, before restarting on fuel.A.be turned on airB.be tried on powerC.be turned by the turning gearD.be tested on fuel【单选】If the pump for a hydraulic anchor windlass is overheating, the cause may be ______.A.increased pump speedB.excessive pump discharge pressureC.too low of a tilting box angleD.low pump speed【单选】If the sea water supply pressure for a diesel engine cooling system is below normal, you should check for a ______.A.broken thermostatB.clogged sea water strainerC.blown head gasketD.cracked head【单选】If the speed of a turbocharged diesel engine is maintained constant as the load on the engine is increased, the speed of the turbocharger will ______.A.decrease until the engine speed increasesB.increaseC.decreaseD.remain unchanged【单选】If you heard a 'crackling' noise in a centrifugal pump, the most probable cause of the problem would be ______.A.insufficient speedB.cavitationC.excess discharge pressureD.excessive net positive suction head【单选】Immediately after any diesel engine is started, the engineer should check the ______.A.crankcase pressureB.lube oil pressureC.saltwater pressureD.exhaust temperature【单选】In Maritime Labour Convention, hours of rest may be divided into no more than two periods, one of which shall be at least ___ hour in length, and the interval between consecutive periods of rest shall not exceed 14 hours.A.fourB.fiveC.sixD.seven【单选】In ___ pumps a closed discharge valve will cause bursting discharge pressure.A.centrifugalB.plungerC.injectorD.water【单选】In ______ the control action is independent of the output.A.a closed loop control system B.an open loop control systemC.a boiler control system D.a steering gear control system【单选】In a diesel engine cooling water system, a pH of 6.0 indicates a/an ______.A.slightly acidic conditionB.slightly alkaline conditionC.over-treatment of waterD.neutral condition of water【单选】In a general cargo crane, _____ is fitted to lift the cargo load.A.the slewing motorB.the luffing motorC.the hoisting motorD.the fan motor【单选】In a radial piston pump, reversal and control of fluid flow are accomplished by moving the _______. A.central valveB.radial plungerC.floating ringD.cylinder body【单选】In an air conditioning system, moisture is removed from the air by ______.A.filtersB.separatorsC.ducted trapsD.dehumidifiers【单选】In common rail engines, the fuel is ______ before is injected into the cylinders.A.stored in a common fuel lineB.pumped by the injection pumpC.at low pressureD.already atomized【单选】In some diesel engine designs, the injection of cylinder oil is timed to impinge when the piston is coming upward and only impinge on ______.A.piston skirtB.piston crownC.piston ring belt.D.cylinder ring belt【单选】In the Oil Record Book, a comprehensive list of operational items are grouped into operational sections. Each section is codified by a/an ______.A.numberB.abbreviationC.letterD.number、abbreviation and letter【单选】In the electronic governor actuator, the oil pressure is provided by a ______ pump driven by a shaft connected to the engine camshaft.A.servomotorB.hydraulic motorC.gearD.volute【单选】In the event of a small bunker oil spill on deck occurring while bunkering, youshould ______.A.wash down the area immediately with a fire hoseB.wash down the area with keroseneC.cover the area with absorbent materialD.cover the area with foam【单选】In the event of minor emergencies when the machinery spaces unattended, ______ will be informed of malfunctions in the machinery by his cabin monitor.A.the chief engineerB.the engineer on cabin watchC.the bridge officer on watchD.the master【单选】In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called ______.A.evaporationB.distillationC.dehydrationD.condensation【单选】Increasing the temperature of a fuel will _____ its viscosity, and vice-versa.A.increaseB.not changeC.reduceD.add【单选】It ______ for an emergency generator to require paralleling.A.is usual B.is not usualC.is necessaryD.is not impossible【单选】It is important to note that when an excessive amount of water is present in the fuel the temperature for centrifuging must be kept below ______, otherwise forming and agitation of the fuel takes place.A.the condensating point of waterB.the boiling point of waterC.the flash point of the fuelD.the flammable point of the fuel【单选】It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong direction. This would cause the pump ______.A.head capacity to improveB.discharge to be reversedC.efficiency to decreaseD.slippage to decrease【单选】Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by ______.A.permanent loss of pump suctionB.worn shaft sealsC.high level in the oil sumpD.low motor RPM【单选】Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an ______.A.over-speed tripB.audible/visual alarmC.the ships/boats general alarmD.reserve oil storage tank【单选】Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ______.A.air charge density becoming too highB.piston crown surfaces becoming too coldC.formation of excessive quantities of pression pressure being greatly reduced【单选】Maximum pressure readings should be taken when the engine is running on ______ as steadily as possible.A.half loadB.full loadC.average loadD.minimum load【单选】Motor controllers are seldom troubled with grounds because ______.A.the auxiliary contacts have a high resistance connectionB.the contactors and relays are mounted on a non-conducting panelC.the resistor banks are composed of individual series-connected unitsD.there are separate switches for the motor and the control【单选】Noxious emissions amount to 0.25～0.4 percent by volume of the exhaust gas, depending on the amount of ______ in the fuel and its lower heat value, and the engine type, speed and efficiency.A.carbonB.sulphurC.oxidD.water【单选】Over-greasing of ball bearings installed on pumps will result in ______.A.smoother pump operationB.overheating of the bearingC.reduced corrosion in the bearingD.increased pump capacity【单选】Owing to its __________, the low speed cross-head diesel engine is widely used on board ship as a main engine.A.smaller size and simple constructionB.long life, lower cost and reliabilityC.easier operation and managementD.simple construction and easier management【单选】Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ______.A.slightly less than the line frequencyB.the same as the line frequencyC.slightly greater than the line frequencyD.have nothing to do with the line frequency【单选】Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to ______.A.test the starting systemB.remove condensation from the cylindersC.check the compressionD.check for proper lube oil pressure【单选】Reheating a hardened component to a temperature lower than the hardening temperature and then cooling it is known as ______.A.low temperature hardeningB.case hardeningC.annealingD.tempering【单选】Remote control means that _____ .A.the system is manned manuallyB.the system is situated remotely from the operatorC.the system is controlled automaticallyD.the system is controlled from the bridge【单选】Restrictions occurring in the small orifices of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components【单选】STCW Convention describes that _____ are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room. A.available minimum requirementsB.available maximum requirementsC.mandatory minimum requirementsD.mandatory maximum requirements【单选】STCW Convention states that the officer in charge of the engineering watch is the _____ representative.A.ship-owner'sB.master'sC.chief engineer'sD.manager's【单选】Safe working conditions inside the crankcase are ______, especially for large bore engines where the components are quite heavy.A.reliableB.safetyC.easyD.important【单选】Seawater can be used for drinking ______. A.at a maximum rate of two ounces per dayB.after mixing with an equal quantity of fresh waterC.if gather during or immediately after a hard rainD.under no circumstance【单选】Smaller equipment may be supplied via ______ or miniature circuit breakers.A.exciters mutatorsC.fusesD.wattmeter【单选】The Abbreviation "ERM" in the Manila Amendments to the STCW Convention stands for ______.A.Engine Room ManagementB.Engine Resources ManagementC.Engineer Resources ManagementD.Engine-room Resources Management【单选】The ISM Code is a part of ____.A.SOLASB.MARPOLC.STCWD.Ballast Water convention【单选】The International Management Code for the Safe operation of ships and for Pollution Prevention is referred to as _______.A.ISM CodeB.IOPP CodeC.IMS CodeD.ISPS Code 【单选】The Port Authorities, in accordance with the IMO resolutions have been carrying out _____ to enhance safety of foreign ships.A.CPP B.FPP C.PSC D.FSC【单选】The SMS should provide for specific measures aimed at promoting the_____ of equipment or systems, the sudden operational failure of which may result in hazardous situations.A.visibilityB.abilityC.reliabilityD.capability【单选】The ______of the telemotor is mounted on the steeringgear.A.transmitterB.receiverC.pipesD.charging unit【单选】The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ______.A.American Petroleum B.Institute number viscosity index numberC.Seconds Saybolt Furol numberD.Seconds Saybolt Universal number【单选】The activated sludge strength should be checked at regular intervals, and it is good that the color of the aeration compartment water is ______.A.chocolateB.yellowC.blackishD.ivory-white【单选】The air distributor is conventionally driven by ______ and distributes ______ into each cylinder by certain sequence.A.camshaft / fresh airB.camshaft / starting airC.electronic motor which is controlled by a computer / fresh airD.electronic motor which is controlled by a computer / starting air【单选】The burning of ______ is a class‘C’fire.A.diesel oilB.magnesiumC.dunnageD.electrical insulation【单选】The capacity of the supply pump to the separator should correspond with the recommended throughput, or it must be adjusted without the risk of ______ formation.A.sludgeB.emulsionC.oil runoutD.deposit【单选】The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when ______. A.excessive loads are placed on the winch B.minimum pull is being exerted by the winch C.automatic operation of the winch is desired D.wire is being retrieved at the maximum rate【单选】The cooling water jacket is common to all the cylinders but there are often ______ to ensure that each cylinder receives the right amount and flow of water. A.dividing walls B.divided walls C.dividing liners D.divided jackets【单选】The descriptions about cetane number are TRUE except ______.A.Cetane number indicates ignition qualityB.The lower value the cetane number is of, the poorer the ignition quality will beC.Cetane number isn't the only measurement of ignition quality.D.Cetane number is measured by Redwood instrument【单选】The device that most commonly utilizes the principle of electromagnetic induction is the ______.A.diodeB.transformerC.transistorD.rheostat【单选】The engineer officer in charge of the watch shall ensure that ______are kept under constant surveillance.A.the devices and systems in chargeB.the communication devicesC.the main propulsion plant and auxiliary systemsD.the steering gear【单选】The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and ______.A.reduce water temperatureB.reduce water turbulenceC.provide an air cushionD.allow for an increase in water volume as the engine warms up【单选】The extended aeration process consists of _____ the liquor either by bubbling air through it or by agitating the surface.A.deoxygenating B.oxygenatingC.chemicalizingD.disinfecting【单选】The frequency output of an operating alternator is controlled by the ______.A.relative speed of the rotor polesB.number of turns of wire in the armature coilC.strength of the magnets usedD.output voltage【单选】The instrument which the emergency switchboard doesn't need is ______.A.ammeter B.voltageC.wattmeterD.synchronous meter【单选】The load sharing characteristics of two diesel generators operating in parallel are mostly dependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings【单选】The lubricating oil purifier may ______ oil from the drain tank and ______ the clean oil into the supply line.A.take; takeB.discharge; takeC.discharge; dischargeD.take; discharge 【单选】The magnetic field is provided by electromagnets so arranged that adjacent poles have ______.A.opposite polarityB.the same polarityC.negative polarityD.positive polarity 【单选】The main objective of ISPS Code is ______.A.to prevent the human injury and the loss of lifeB.to specify the measures to enhance maritime securityC.to avoid the damage to the environment, particularly to the marine environmentD.to ensure the compliance with conventions【单选】The main objective of the SOLAS Convention is ______.A.to specify minimum standards for the construction, equipment and operation of ships.B.to specify minimum standards for the training, certification and watch keeping for seafarers.C.to provide minimum standards for the operation of vessels.D.to tell the company how to run the business.【单选】The majority of automatic mooring winches are _____ to improve the backward efficiency of the gear train for rendering.A.spur gearedB.screw gearedC.worm gearedD.belt driven【单选】The most critical part of the bunkering operations, which can result in an oil spill, is when the ______.A.hose joints are made upB.tanks are being topped offC.system is being lined upD.pumping operation is first started【单选】The officer in charge of an engineering watch shall have the knowledge of ERM principles, including obtaining and maintaining ______.A.situational awarenessB.safety awarenessC.environmental awarenessD.anti-pollution awareness【单选】The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in _____ of operation are immediately implemented. A.ahead or astern B.fore or aft C.up or down D.speed or direction【单选】The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by ______.A.passing it through the expansion valveB.condensing refrigerant in the system condenserC.passing the gaseous refrigerant through the heat interchanger on the suction side of the compressorD.maintaining a high pressure on the system's receiver【单选】The operator of electrical motors should keep a constant check on the loads they carry because ______.A.low loads necessitate frequent insulation cleaningB.exceeding nameplate values shortens useful lifeC.energy is wasted if full loading is not utilizedD.power factor correction methods are load dependent【单选】The overcurrent relay _____ the motor contactor when the motor exceeds its rated current.A.connectsB.tripsC.foulsD.destructs【单选】The part of a fuse that melts and opens the circuit is made of ______.A.copper and antimonyB.steel and babbittC.aluminum or beryllium alloyD.zinc or an alloy of tin and lead【单选】The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to ______.A.eliminate the necessity for an oil scraper ringB.prevent side thrust and cylinder scoringC.prevent sludge and dirty oil from entering the crankcaseD.scrape oil。
轮机三管轮考证英语41试题加答案
中华人民共和国海事局2006年第3期海船船员适任证书全国统考试题(总第41期)科目：轮机英语试卷代号：805适用对象：无限、近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至74题，每题1分，第75题至78题，每题1.5分,第79题至80题,每题10分。
一、单项选择题1. A diesel engine is similar to a gasoline engine except that the former has no ______.A. cross-headB. spark plugC. connecting rodD. cylinder2. A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, iscommonly classed as a ______.A. slow-speed dieselB. medium-speed dieselC. high-speed dieselD. constant-speed diesel3.Which of the diesel engine components listed increases air density and helps to improve engineoperating efficiency?A. ImpellerB. CompressorC. After-coolerD. Exhaust diffuser4.For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ______.A. it has a longer power strokeB. more air gets into the cylinder each strokeC. it develops twice as many power strokes at the same speedD. higher combustion pressure is developed5.The intake valves in a diesel engine are reseated by ______.A. cam followersB. push rodsC. combustion gasesD. valve springs6.According to the way the energy of the exhaust gases is utilized, pressure-charging can be dividedinto two main systems, namely, the constant-pressure system and ______.A. the pulse-phase systemB. the pulse Doppler systemC. the pulse systemD. the pulse interval system7.An over-speed safety device is usually fitted to a generator engine for______in the event of over-speed.A. cutting power off the engineB. increasing the fuel pump settingC. braking the crankshaftD. stabilizing the ship speed8.What preventative maintenance should be done frequently to diesel engine starting air receivers?A. Drain the accumulated moisture.B. Test the relief valves.C. Watch the temperature to prevent fluctuations in pressure.D. Clean the interior to remove oil and foreign matter.9.Immediately after any diesel engine is started, the engineer should check the ______.A. crankcase pressureB. lube oil pressureC. seawater pressureD. exhaust temperature 10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears11.In motor ship, ______is often used to recover some of the heat carried in the exhaust gases fromthe main engine.A. an diesel oil heaterB. a waste heat boilerC. a fresh water generatorD. a donkey boiler12.An exhaust gas bypass is installed on a waste heat boiler in order to ______.A. bypass exhaust gas at high loads to prevent excessive back pressureB. bypass a portion of the exhaust gas at peak loads for better efficiencyC. recycle exhaust gas to the turbochargerD. minimize moisture condensation in the boiler gas passages at low loads13.Prior to lighting off a cold automatically fired auxiliary boiler, you should ______.A. check and regulate the water levelB. close the air cock once fires are litC. blow down the gage glassD. assure protective steam flow14.Flame failure in an automatically fired auxiliary boiler can mostly result from a/an ______.A. incorrect electrode settingB. incorrect nozzle positionC. clogged fuel nozzleD. broken high tension lead15.Waterside scale in a fire-tube boiler may cause ______.A. increased heat transferB. fireside erosionC. high steam demandD. overheated tubes16.Which of the following will be the advantage of a centrifugal pump as compared with areciprocating pump? I. Its discharge is continuous; II. It has no internal valves; III. Uponaccidental closing of discharge valve, excessive pressure will not build upA. I, IIB. II, IIIC. I, II, IIID. II only17.Why are removable sleeves installed on centrifugal pump shafts?A. They make it easier to replace the pump shaft packing.B. They can be economically replaced as they wear out.C. They can be removed when it is necessary to lighten the weight of the pump.D. They increase the strength of the shaft.18.If one of the bilge system manifold valves does not properly seat, the ______.A. bilge well connected to that valve, plus the second bilge well being pumped will be completelyemptiedB. bilge system will lose vacuum and prevent the other bilges from being pumped outC. bilge well aft connected to that valve will siphon(虹吸) its contents to the forward bilge wellsD. discharge pressure will be too high.19.Which of the listed statements is correct concerning the starting of centrifugal pumps?A. They should always be started with the discharge valve closed.B. They should always be started with the discharge valve opened.C. A priming pump is always required to flood the impeller suction.D. They should always be started with the sealing line valves closed.20.The simplest method to use for determining if a centrifugal pump is operating as designed, is to______.A. closely observe the pump discharge temperatureB. close off the discharge valve, and watch for a rise in pressureC. momentarily close off the suction valve, and watch for a rise in pressureD. use a clamp on ammeter and compare the readings to past records21.Which of the following modes of heat transfer does NOT require any physical contact between awarmer and a cooler substance?A. RadiationB. ConductionC. Natural convectionD. Contact directly22. A re-heater in an air conditioning system functions to ______.A. control inlet air temperatureB. control inlet air volumeC. maintain relative humidity at 15%D. restore conditioned air temperature to a comfortable level23.In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effectof the primary refrigerant can be increased by ______.A. increasing refrigerant pressure in the coilB. increasing chilled water flow through the coolerC. sub-cooling the refrigerant in the condenserD. superheating the refrigerant in the compressor24.Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressoras a result of ______.A. wax precipitation in the lube oilB. contamination by dust, scale, or moistureC. refrigerant bubbles in the lube oilD. refrigerant reducing the lube oil viscosity25.Placing a filter on the ______of an oily water separator will “polish” the discharge butoverloading must be avoided.A. suction sideB. discharge sideC. by-pass pipeD. sampling pipe26.When started, a complete oily water separating unit is first filled ______.The oily water mixtureis then pumped through the inlet pipe into the coarse separating compartment.A. with dirty waterB. with clean waterC. by oily waterD. by mixed water27.Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler28.The ______is used to burn oil sludge.A. clarifierB. oil/water separatorC. incineratorD. distiller29.Most marine biological sewage treatment plants consist of all the following statements except______.A. aeration tanksB. settling tanksC. disinfection agent （消毒剂）D. anaerobic bacteria (厌氧菌)30.For a purifier changing to a gravity disc with smaller hole diameter will move the interfacetowards the ______.A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface31.The ______of the gravity disc is too big. It cause oil to flow through the water outlet. Wechanged the disc and no oil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder32.The advantages of flash type evaporators, as compared to submerged tube type evaporators,include ______.A. less internal corrosion because of lower brine densityB. higher temperature evaporation for lower salinity of the distillate producedC. less scale formation in a flash evaporatorD. less feed-water required for a flash evaporator33.Distilled water from an evaporator may be discharged into a drinking water tank ______.A. through a detachable hose connectionB. after passing through an activated charcoal filterC. after chemical analysis shows it is fit for consumptionD. through a solenoid operated three-way valve34.What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve35.In a radial piston pump, reversal and control of fluid flow are accomplished by moving the______.A. central valveB. radial plungerC. floating ringD. cylinder body36.In a general cargo crane, ______is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. the fan moter37.______are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches38.The clutch band of a constant tensioning mooring winch must be set up tight enough to drive thewinch drum and should slip only when ______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retrieved at the maximum rate39.Dual (双的)electro-hydraulic steering units usually operate ______.A. with both pumps on line at the same time B．with one pump on standbyC．with the follow-up gear disconnected D．only when the rudder is moved amidships40.One factor that determines the frequency of an alternator is the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage41.An electrical device which employs a stationary armature and a rotating electromagnetic field isused aboard ship as a ______.A. magnetic amplifierB. ship's service alternatorC. three-wire DC generatorD. saturable core reactor42.Current changing in direction and rising and falling in value is ___ .A. D.C.B. A.C. C. generatorD. fresh water generator43.Equal power factors on paralleled AC generators are maintained by an automatic ______.A. voltage regulatorB. reverse power relayC. reverse current relayD. governor control switch44.______shall be continuously powered and shall have an automatic changeover to a stand bypower supply in case of loss of normal power supply .A. Cooling systemB. Alarm systemC. The air conditioning installationD. The mooring equipment45.Switchboards may be of the dead-front type in which all live parts are installed behind ______andonly the operation handles and instruments are on the frontA. the capstanB. the collectorC. the panelsD. the surface46.The emergency generator or emergency battery is connected to ______on most ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards47.The primary function of an electric motor is to ______.A. develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance48.Electrical leads and insulation on a motor should be painted with ______.A. heat-resisting acrylicB. heat-resisting aluminumC. insulating varnishD. insulating white lead49. A circuit breaker and a fuse have a basic similarity in that they both ______.A. can be reset to energize the circuitB. should open the circuit when overloadedC. will burn out when an over current flow developsD. should short the circuit when overloaded50.Electric circuits are protected against short circuits by means of a/an _______.A. diode(二极管)B. amplifierC. circuit breakerD. capacitor51.The electrolyte in a lead-acid storage battery consists of distilled water and ______.A. hydrogen chlorideB. calcium chlorideC. sulfuric acidD. muriatic acid52.When under maneuvering conditions with the machinery being manually operated the control unitor console should be ___.A. automatically controlledB. off powerC. continuously mannedD. continuously unmanned53.______is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed54.After “F.W.E.” is given, the air system is shut down, the ______gear put in, all drains andindicator cocks opened, and the cooling water kept running.A. steeringB. timingC. turningD. running55. A tank which has been sealed for a long period of time can be dangerous because ______.A. steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous vapors in the presence of moisture56. A class 'C' fire is burning ______.A. diesel oilB. magnesiumC. dunnageD. electrical insulation57.To prevent the spread of fire by conduction, you should ______.A. close all openings to the areaB. remove combustibles from direct exposureC. cool the bulkheads around the fireD. shut off all electric power 58.The lengthening of a crack formed in the shell plating of a ship may be prevented by ______.A. welding brackets across both ends of the crackB. chipping out and slot welding the entire crackC. drilling a hole at each end of the crackD. cutting a square notch at each end of the crack59.After a fire has been extinguished in a closed space, personnel may safely enter the space when______.A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment'sentranceB. a lifeline and explosion proof flash light are usedC. all smoke and toxic fumes are removed and an adequate oxygen supply is presentD. overhaul has been completed to remove any possible source of re-ignition60.While loading bunkers, you notice oil on the water near the vessel. What should you do first?A. Stop loadingB. Notify the harbor administration.C. Determine if the vessel is the source of the pollution.D. Start the main engine and put them in gear to disperse the spill.61.To anneal (退火)a copper gasket, you should heat the gasket _______.A. and quench it in oilB. cherry red and quench in waterC. and let it cool slowly in the airD. and carbonize it62.When a vessel is in dry-dock, the vessel's engineers should ______.A. examine the condition of the propellerB. chip and paint all hull protection zincsC. install new docking plugs in all cofferdamsD. inspect the hull for hogging or sagging63.The additional mark ______in the Classification Certificate for Machinery represents thatpersonnel are watching at engine assembly control station and monitoring all machinery andelectronic devices.A. BRCB. MCCC. AUT-0D. AUT-164.Which of the following operations must be entered on the Oil Record Book Part I?I. Routine discharge at sea of bilge water containing oil from the machinery spacesII. Bunkering of fuel oilA. I onlyB. II onlyC. both I and IID. neither I nor II65.Your ship’s certificates show that you did not do renewing work for certificate. All certificateshave expired a few days before. Thus, your ship is ______.It follows therefore that she will______.A. seaworthy / be fined in our portB. un-seaworthy/ be disassembled in our portC. seaworthy / be assembled in our portD. un-seaworthy / be detained in our port66.“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a______.A. substandard shipB. standard shipC. over-standard shipD. reference ship67.When deciding the composition of the engineering watch, which may include _____appropriately,many factors shall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief engineer68.The officer in charge of the engineering watch shall notify the chief engineer withoutdelay______.A. in any emergency or if in any doubt as to what decision or measures to takeB. in the event of any impending action in ma chinery spaces that may cause reduction in ship’sspeedC. when isolating and bypassing machinery to be worked onD. co-operating with any engineer in charge of maintenance work69.At an unsheltered anchorage the chief engineer shall consult with ______whether or not tomaintain an underway watch.A. the engineer officer in charge of watchB. the deck officer in charge of watchC. the masterD. the chief mate70.The term "moderate speed" was previously interpreted as meaning a speed which would enable avessel ______within half the range of visibility.A. stoppingB. being stoppedC. to stopD. to be stopped71.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.A. skimmersB. strawC. dispersantsD. sawdust72.The SOLAS Convention in its successive forms is generally regarded as the most important of allinternational treaties concerning the ______ of merchant ships.A. pollutionB. economizationC. efficiencyD. safety73.The Company should ensure that the master is fully ______with the Company's SMS.A. familiarB. understandC. conversationD. confused74.______means the level for which minimum appropriate protective security measures shall bemaintained at all times, threats and exchanging such information with appropriate Contracting Governments.A. Security level 1B. Security level 2C. Security level 3D. Security level 4二. 关联题（关联题题干下有4个小题，每小题4个选项）With many small package boilers, the automatic control sequence usually ensures that the boiler fire is initially ignited from a diesel oil supply, and changed over to the usual source when ignition is completed. With good management, to facilitate subsequent starting from cold, the fuel system of large boilers will have been flushed through with diesel oil when the boiler was on light duty immediately prior to being secured. When burning such diesel fuel it is essential for safety that only the correct (small) burner tip should be used. It should be kept in mind that if fire does not light, immediately shut off fuel and vent furnace.Complete ignition of fuel in the furnace is essential. The burner flame, the smoke indicator and the funnel should be frequently observed. With satisfactory combustion, the flame should appear in candescent （白热的）with an orange shade at the flame tip, and a faint brownish haze should show at the funnel. If on first ignition the flame is uncertain, badly shaped and separates from the primary swirler, momentary opening or closing of air register may correct. 75. Small package boilers will use _______ while being lit up.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil76. After large boilers being secured, the fuel in the feeding line will be____.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil77. If large boilers were not lit up, _____.A. feed water to normal levelB. stop fuel supply immediately and purge the furnaceC. light the boiler againD. reset the burner78. An indication for a good combustion is ______.A. white smokeB. brown haze in the funnelC. orange flame tipD. swirl oil spray三、中译英（共2题，请将答案写在答题纸上）79. 船舶加油期间，如发现船舶附近水面有油或发生溢油事故，都应立即停止加油作业。
航海英语机考真题31期-56期甲类一等三副答案
选择题参考答案期数：3１试卷代号：9031.明天早上6点以前备妥主机。
2.舵工收到命令右舵15度。
舵工应立即回答3.了望者离开他的岗位4.昨天晚上我在海员俱乐部地遇见水手长5.以下哪个文件不被检疫机构要求？6.事不必太认真7.当在无线电话上时数字9应怎么说？8.9.液化天然气船在123.32N, 10.13E处泄漏，不要从她的通过10.这个制度仅适用于那些在锚地抛锚等待进口的船舶11.船上一个由底层向上一直通到甲板的内部梯子的装臵被称为12.灭油火的最好灭火器是13.导缆口是14.泡沫灭火通过15.为了使管道系统内部发生燃烧，如海上喷射系统中的气体收集头必须有16.火灾的对流蔓延由来完成17.你船迅速下沉。
一个装有可膨胀式救生筏的箱子连接在静水力释放装臵上。
你应采取什么措施？18.在船舶管理中被要求的消防演习中，所有人员必须报告它们的位臵和模拟指派给他们的任务完成的能力19.你应怎样指挥起货机手提升吊杆？20.去年我们已对起货机做了21.明天早晨下雨，装货22.自由液面的增加致使的上升24.谷糠，煤之类的货物，必须通风以它们自燃25.表明船舶的初稳性26.在每年的这个季节里，上面提及的区域能见度27.船舶志中的所有记录必须（被）由船长和一名船员签字28.具有红绿横纹的浮筒将具有的灯光特性29.无论何处可能获得好锚地，通常是泥和沙，在这些水域船舶可以拥有30.以下哪项不需要记入航海日志中？31.有时船舶在开敞锚地抛双锚锚泊以32.自西边开来的船舶将在位臵015108N/1033008E引水员33.一双车船使用双车前进掉头，将更易于向右舷掉头假如34.在站点附近可能有海图上未注明的灯，雾号和雷达信标发射器35.潮水怎样？什么潮水36.建议你的渔网37.当一特定气团的温度上升时，38.悬式(干湿球)湿度计是一个39.对于气象传真图上标绘的信息，我们能够40.据预报，过几天大雨泛滥淹没港口及附近地区41.高压脊自Sevastopol到Libya东部42.12小时大风警告有效自1103900700UTC这句子，警告预报的有效期从开始43.在很多情况下，大洋水域的小比例尺海图的水文资料仍，所标水区的位臵，水深和范围可能有误44.关于助航设施的严重缺陷或重要变化，首先通过给航海者45.长能够从任何的英版海图供应商那里获得英版航海通告46.平均高潮是的平均值47.任何国家的船舶均无线电医疗咨询服务并且这项服务不收费48.海图通过发布的信息而被改正49.一般地，用于画大洋航线，域50.闪（2）5秒的红色立杆灯标代替搁浅船西南方向附近的绿色锥型灯标。
甲类三管轮机英语考试真题教材
【单选】In some cases, when _____ exceeds a pre-set value ,the filter is automatically back flushed with air ,the displaced oil going to auxiliary drain tank where it is subsequently filtered and pumped back into the system A.the differential temperatureB.the differential pressureC.the temperature and pressureD.the pressure【单选】'Insufficiency of manning or insufficiency of certification of seafarers' is an identification of a/an ______.A.substandard shipB.standard shipC.over-standard shipD.reference ship【单选】'Loop,' 'uniflow,' 'crossflow,' and 'return-flow' are terms used to describe various types of ______.A.control air circuitsB.superchargingC.turbochargersD.scavenging【单选】 A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an ______.A.rotorB.statorC.exciterD.armature【单选】 A centrifuge arranged to separate two liquids is known as _____.A.an oily water separatorB.a purifierC.a centrifugal compressorD.a clarifier【单选】 A circuit breaker and a fuse have a basic similarity in that they both ______.A.can be reset to energize the circuitB.should open the circuit when overloadedC.will burn out when an over current flow developsD.should short the circuit when overloaded【单选】 A circuit breaker differs from a fuse in that a circuit breaker ______.A.melts and must be replacedB.is enclosed in a tube of insulating material with metal ferrules at each endC.gives no visual indication of having opened the circuitD.trips to break the circuit and may be reset【单选】 A circuit breaker is ______.A.a distribution device B.a lighting equipmentC.the indicating instrumentD.an isolating switch【单选】 A combination combustible gas and oxygen indicator is an instrument that measures the _____ of both combustible gas and oxygen; each is indicated on a separate binationsC.concentrationD.filters【单选】 A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an ______.A.double-acting engineB.opposed pistons engineC.single-acting engineD.horizontal acting engine【单选】 A fire involving aluminum powder would be a class _________. A.'A' fireB.'B' fireC.'C' fireD.'D' fire【单选】 A hydraulic motor may be driven by ______.A.an electric motorB.a diesel engineC.a compressorD.oil【单选】 A marine diesel engine is started by______.A.supplying high pressure oil into a hydraulic motorB.supplying high temperature air into the cylinderC.supplying high pressure air into the cylinderD.electrical igniting【单选】 A positive displacement pump is that where the volume of the pump chamber is alternately increased to ___ and then decreased to ___. A.draw the liquid in / force the liquid outB.force the liquid out / draw the liquid inC.suction/drawD.deliver/outlet【单选】 A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to ______.A.feel the high pressure fuel lineB.check the cylinder exhausts for white smoke frequentlyC.check the cylinder exhaust temperatureD.isolate each cylinder and inspect the injector【单选】 A segregated ballast system is a system where ______.A.all ballast is processed through the oily water separatorB.ballast is taken on and discharged through a separate main deck riserC.ballast and cargo tanks are separated by cofferdamsD.all ballast lines, tanks, and pumps are independent of those used for oil【单选】 A supercharged diesel engine, when compared to a similar naturally aspirated diesel engine, will develop an increase in ______.A.ignition lagB.engine horsepowerC.lube oil system pressureD.specific fuel consumption【单选】 A viscosity regulator used for an engine is usually provided in order to _____ for an engine burning heavy fuel oil.A.regulate the fuel supplyB.maintain a constant fuel viscosity at the fuel valvesC.maintain efficient coolingD.alter the fuel density【单选】According to STCW, the abilities specified in the standards of competence are grouped as seven functions at three levels of responsibility, which of the following is not one of the three levels?A.Navigational levelB.Management levelC.Operational levelD.Support level【单选】According to the MARPOL CODE, glass, metal and paper materials should ______.A.never be discharged into seaB.be discharged beyond 12 nm from nearest landC.be discharged limited in 12 nm from nearest landD.be discharged to sea【单选】According to the SOLAS convention, the bilge water system ______A.The bilge pump must connect the bilge well suction directlyB.should not pump out the water accumulated in the cargosC.should not be used for emergency drainage in case of ship collisionD.should be connected to the fire fighting system directly【单选】After 'F.W.E.' is given, the air system is shut down, the _____ gear put in, all drains and indicator cocks opened, and the cooling water kept running.A.steeringB.timingC.turningD.running【单选】After 'finished with engine', which of the following cannot be shut off by the duty engineer ?A.fuel oil booster pumpB.the main starting valveC.the sea chestD.the main cooling sea water pump【单选】After taking on fuel oil, the hoses should be disconnected and ______.A.draped over the fantail to dry outB.drained over the side and washed outC.drained into the bilges and washed outD.drained into buckets【单选】Air chambers are usually fitted to reciprocating pumps in order to ___.A.increase discharge pressureB.increase suction vacuumC.develop pulsation flowD.keep a steady rate of flow【单选】All crew's assigned emergency stations can be found on the ship's ______.A.muster listB.certificate of inspectionC.clearance papersD.permit to proceed【单选】All details of fuel bunkering or slop disposal must be entered in the _____.A.rough logB.engine room log bookC.oil record bookD.smooth log【单选】An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every ______.A.weekB.2 weeksC.monthD.3 months【单选】An incinerator auxiliary burner can not be ignited. It is NOT caused by______.A.carbon deposits on the electrodesB.defective atomizerC.low oil pressureD.too much water in the oil sludge【单选】An incinerator auxiliary oil-fired burner is used to ignite ______.A.the solidwaste or the oil sludgeB.the solid waste onlyC.the oil sludge onlyD.neither the solid waste nor the oil sludge【单选】Anchor capstans are used in some installation where the cable lifter rotates about a ______. A.horizontal axisB.crankshaftC.vertical axisD.camshaft【单选】As for oil separator, ______contributes to poor separation efficiency and carries over of water into the clean oil outlet.A.A too big gravity discB.A too small gravity discC.The high oil temperatureD.The high speed motor【单选】As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.A.increaseB.decreaseC.remain unchangedD.be greatest at dew point【单选】Before doing any work on a hydraulic system equipped with accumulators, you should ______.A.drain the accumulators and purge with oxygenB.bleed off all stored energy from the accumulators completely C.charge the accumulators to prevent system energy lossD.pump the hydraulic fluid into the accumulators to prevent fluid loss【单选】Before starting the engine, the air bottle should be ______.A.pumped up B.loaded C.discharged D.closed【单选】Biological sewage water treatment plant work on the_____.A.heating processB.settling processC.aeration processD.centrifuging process【单选】Cargo handling unit is rated according to the _____ to be lifted.A.cargo craneB.jibC.safe working loadD.oil pressure【单选】Centrifugal pumps, used to handle hot liquids, must have a minimum flow through them under all operating conditions. This flow serves to ______.A.prevent overheating and damage to pump rotating parts due to rubbingB.maintain the net positive suction head of the pumpC.maintain hydraulic differential in the pump impeller passagesD.purge the pump of non-condensable vapors and gases【单选】Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and _____ in size.A.expand B.extract C.increase D.decrease【单选】Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by ______.A.cylinder pression ringsC.piston skirtsD.oil rings【单选】Cooling of engines is achieved by circulating a cooling liquid around internal ______ within the engine.A.airB.passagesC.pipesD.means【单选】Dual electro-hydraulic steering units usually operate ______.A.with both pumps on line at the same timeB.with one pump on standbyC.with the follow-up gear disconnectedD.only when the rudder is moved amidships【单选】During ______ the gases are driven out of the cylinder by the piston.A.The suction strokeB.The compression strokeC.The expansion strokeD.the exhaust stroke【单选】During purification, if the operating water tank is empty, which of the following malfunctions will appear?A.Some oil will flow from the water outlet of the separator.B.There will be some water in the purified oil.C.Some oil will flow from the sludge outlet of the separator.D.If discharging the sludge, there will be no flushing water.【单选】Each crank is made up of two crank webs joined by a common ______ to which the bottom end bearing is fitted. A.throw B.crankshaft C.crankpin D.crosshead【单选】Each cylinder liner on the marine medium speed engines _____. A.is usually cooled by sea water B.can be replaced when worn out C.is in direct contact with the water in the bore of the cylinder D.can't expand when heated【单选】Electric wires should have each feature of the following except ______.A.flame retardantB.moisture resistantC.oil resistant D.low conductivity【单选】Engine speeds at which resonance can occur are termed ______.A.maximum speedsB.full speedsC.sea speedsD.critical speeds【单选】Equal power factors on paralleled AC generators are maintained by an automatic ________.A.voltage regulatorB.reverse power relayC.reverse current ernor control switch【单选】Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _______.A.an air bound fuel systemB.damage to cylinder heads and pistonsC.excessive fuel injectionD.excessive air valve lift【单选】Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ______.A.prolong the ignition delay periodB.ensure the beginning of fuel injectionC.thoroughly utilize the air chargeD.allow controlled fuel combustion【单选】Fuel is ignited into a diesel engine cylinder by ______.A.a spark plugB.injectorsC.the heat of compressionD.increasing jacket water temperatures【单选】Full travel of the electronic governor actuator linkage must exceed the ______ travel of the engine fuel control to ensure that the engine fuel control is capable of moving from the 'off' position to 'full fuel'. A.minimumB.averageC.maximumD.half【单选】Heavy residual fuel oils are heated prior to centrifuging to ______.A.reduce fuel weightB.increase specific gravityC.separate fuel from lube oilD.reduce fuel viscosity【单选】How can the chance of contaminating hydraulic fluid be decreased when working on hydraulic systems?A.Clean the fittings before they are disconnected.B.Place drip pans under leaky fittings.C.Seal any cracks in lines with Permatex.D.Coat all threads with graphite oil. 【单选】ISM code has applied to the ships as follows exceptA.Passenger shipsB.Bulk freight vessels of 500 gross tons or moreC.Warship of 500 gross tons or moreD.High-speed craft of 500 gross tons or more【单选】If a cam-controlled engine has a normal injection pressure at rated speed, the injection pressure will be ______ at slow speed.A.a little lower B.a little higherC.too lowD.exactly the same【单选】If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST ______.A.secure the ventilationB.find a soda acid extinguisherC.shut off the fuel oil supplyD.secure the generator【单选】If an oil spill occurs on deck, you should ______.A.cover the area with foamB.cover the area with absorbent materialC.wash down immediately with a fire hoseD.wash down immediately with an oil dispersing solvent【单选】If found oil when we open low oil level plug of separator, it indicates _______.A.the separator is overloadedB.the monitor equipment of separator failsC.the discharge pump of separator can not workD.the temperature of oil water is low【单选】If the engine is at rest during maneuver for an extended period the engine should _______, of course, that navigational circumstances permit, before restarting on fuel.A.be turned on airB.be tried on powerC.be turned by the turning gearD.be tested on fuel【单选】If the pump for a hydraulic anchor windlass is overheating, the cause may be ______.A.increased pump speedB.excessive pump discharge pressureC.too low of a tilting box angleD.low pump speed【单选】If the sea water supply pressure for a diesel engine cooling system is below normal, you should check for a ______.A.broken thermostatB.clogged sea water strainerC.blown head gasketD.cracked head【单选】If the speed of a turbocharged diesel engine is maintained constant as the load on the engine is increased, the speed of the turbocharger will ______.A.decrease until the engine speed increasesB.increaseC.decreaseD.remain unchanged【单选】If you heard a 'crackling' noise in a centrifugal pump, the most probable cause of the problem would be ______.A.insufficient speedB.cavitationC.excess discharge pressureD.excessive net positive suction head【单选】Immediately after any diesel engine is started, the engineer should check the ______.A.crankcase pressureB.lube oil pressureC.saltwater pressureD.exhaust temperature【单选】In Maritime Labour Convention, hours of rest may be divided into no more than two periods, one of which shall be at least ___ hour in length, and the interval between consecutive periods of rest shall not exceed 14 hours.A.fourB.fiveC.sixD.seven【单选】In ___ pumps a closed discharge valve will cause bursting discharge pressure.A.centrifugalB.plungerC.injectorD.water【单选】In ______ the control action is independent of the output.A.a closed loop control system B.an open loop control systemC.a boiler control system D.a steering gear control system【单选】In a diesel engine cooling water system, a pH of 6.0 indicates a/an ______.A.slightly acidic conditionB.slightly alkaline conditionC.over-treatment of waterD.neutral condition of water【单选】In a general cargo crane, _____ is fitted to lift the cargo load.A.the slewing motorB.the luffing motorC.the hoisting motorD.the fan motor【单选】In a radial piston pump, reversal and control of fluid flow are accomplished by moving the _______. A.central valveB.radial plungerC.floating ringD.cylinder body【单选】In an air conditioning system, moisture is removed from the air by ______.A.filtersB.separatorsC.ducted trapsD.dehumidifiers【单选】In common rail engines, the fuel is ______ before is injected into the cylinders.A.stored in a common fuel lineB.pumped by the injection pumpC.at low pressureD.already atomized【单选】In some diesel engine designs, the injection of cylinder oil is timed to impinge when the piston is coming upward and only impinge on ______.A.piston skirtB.piston crownC.piston ring belt.D.cylinder ring belt【单选】In the Oil Record Book, a comprehensive list of operational items are grouped into operational sections. Each section is codified by a/an ______.A.numberB.abbreviationC.letterD.number、abbreviation and letter【单选】In the electronic governor actuator, the oil pressure is provided by a ______ pump driven by a shaft connected to the engine camshaft.A.servomotorB.hydraulic motorC.gearD.volute【单选】In the event of a small bunker oil spill on deck occurring while bunkering, youshould ______.A.wash down the area immediately with a fire hoseB.wash down the area with keroseneC.cover the area with absorbent materialD.cover the area with foam【单选】In the event of minor emergencies when the machinery spaces unattended, ______ will be informed of malfunctions in the machinery by his cabin monitor.A.the chief engineerB.the engineer on cabin watchC.the bridge officer on watchD.the master【单选】In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called ______.A.evaporationB.distillationC.dehydrationD.condensation【单选】Increasing the temperature of a fuel will _____ its viscosity, and vice-versa.A.increaseB.not changeC.reduceD.add【单选】It ______ for an emergency generator to require paralleling.A.is usual B.is not usualC.is necessaryD.is not impossible【单选】It is important to note that when an excessive amount of water is present in the fuel the temperature for centrifuging must be kept below ______, otherwise forming and agitation of the fuel takes place.A.the condensating point of waterB.the boiling point of waterC.the flash point of the fuelD.the flammable point of the fuel【单选】It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong direction. This would cause the pump ______.A.head capacity to improveB.discharge to be reversedC.efficiency to decreaseD.slippage to decrease【单选】Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by ______.A.permanent loss of pump suctionB.worn shaft sealsC.high level in the oil sumpD.low motor RPM【单选】Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an ______.A.over-speed tripB.audible/visual alarmC.the ships/boats general alarmD.reserve oil storage tank【单选】Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ______.A.air charge density becoming too highB.piston crown surfaces becoming too coldC.formation of excessive quantities of pression pressure being greatly reduced【单选】Maximum pressure readings should be taken when the engine is running on ______ as steadily as possible.A.half loadB.full loadC.average loadD.minimum load【单选】Motor controllers are seldom troubled with grounds because ______.A.the auxiliary contacts have a high resistance connectionB.the contactors and relays are mounted on a non-conducting panelC.the resistor banks are composed of individual series-connected unitsD.there are separate switches for the motor and the control【单选】Noxious emissions amount to 0.25～0.4 percent by volume of the exhaust gas, depending on the amount of ______ in the fuel and its lower heat value, and the engine type, speed and efficiency.A.carbonB.sulphurC.oxidD.water【单选】Over-greasing of ball bearings installed on pumps will result in ______.A.smoother pump operationB.overheating of the bearingC.reduced corrosion in the bearingD.increased pump capacity【单选】Owing to its __________, the low speed cross-head diesel engine is widely used on board ship as a main engine.A.smaller size and simple constructionB.long life, lower cost and reliabilityC.easier operation and managementD.simple construction and easier management【单选】Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ______.A.slightly less than the line frequencyB.the same as the line frequencyC.slightly greater than the line frequencyD.have nothing to do with the line frequency【单选】Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to ______.A.test the starting systemB.remove condensation from the cylindersC.check the compressionD.check for proper lube oil pressure【单选】Reheating a hardened component to a temperature lower than the hardening temperature and then cooling it is known as ______.A.low temperature hardeningB.case hardeningC.annealingD.tempering【单选】Remote control means that _____ .A.the system is manned manuallyB.the system is situated remotely from the operatorC.the system is controlled automaticallyD.the system is controlled from the bridge【单选】Restrictions occurring in the small orifices of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components【单选】STCW Convention describes that _____ are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room. A.available minimum requirementsB.available maximum requirementsC.mandatory minimum requirementsD.mandatory maximum requirements【单选】STCW Convention states that the officer in charge of the engineering watch is the _____ representative.A.ship-owner'sB.master'sC.chief engineer'sD.manager's【单选】Safe working conditions inside the crankcase are ______, especially for large bore engines where the components are quite heavy.A.reliableB.safetyC.easyD.important【单选】Seawater can be used for drinking ______. A.at a maximum rate of two ounces per dayB.after mixing with an equal quantity of fresh waterC.if gather during or immediately after a hard rainD.under no circumstance【单选】Smaller equipment may be supplied via ______ or miniature circuit breakers.A.exciters mutatorsC.fusesD.wattmeter【单选】The Abbreviation "ERM" in the Manila Amendments to the STCW Convention stands for ______.A.Engine Room ManagementB.Engine Resources ManagementC.Engineer Resources ManagementD.Engine-room Resources Management【单选】The ISM Code is a part of ____.A.SOLASB.MARPOLC.STCWD.Ballast Water convention【单选】The International Management Code for the Safe operation of ships and for Pollution Prevention is referred to as _______.A.ISM CodeB.IOPP CodeC.IMS CodeD.ISPS Code 【单选】The Port Authorities, in accordance with the IMO resolutions have been carrying out _____ to enhance safety of foreign ships.A.CPP B.FPP C.PSC D.FSC【单选】The SMS should provide for specific measures aimed at promoting the_____ of equipment or systems, the sudden operational failure of which may result in hazardous situations.A.visibilityB.abilityC.reliabilityD.capability【单选】The ______of the telemotor is mounted on the steeringgear.A.transmitterB.receiverC.pipesD.charging unit【单选】The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ______.A.American Petroleum B.Institute number viscosity index numberC.Seconds Saybolt Furol numberD.Seconds Saybolt Universal number【单选】The activated sludge strength should be checked at regular intervals, and it is good that the color of the aeration compartment water is ______.A.chocolateB.yellowC.blackishD.ivory-white【单选】The air distributor is conventionally driven by ______ and distributes ______ into each cylinder by certain sequence.A.camshaft / fresh airB.camshaft / starting airC.electronic motor which is controlled by a computer / fresh airD.electronic motor which is controlled by a computer / starting air【单选】The burning of ______ is a class‘C’fire.A.diesel oilB.magnesiumC.dunnageD.electrical insulation【单选】The capacity of the supply pump to the separator should correspond with the recommended throughput, or it must be adjusted without the risk of ______ formation.A.sludgeB.emulsionC.oil runoutD.deposit【单选】The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when ______. A.excessive loads are placed on the winch B.minimum pull is being exerted by the winch C.automatic operation of the winch is desired D.wire is being retrieved at the maximum rate【单选】The cooling water jacket is common to all the cylinders but there are often ______ to ensure that each cylinder receives the right amount and flow of water. A.dividing walls B.divided walls C.dividing liners D.divided jackets【单选】The descriptions about cetane number are TRUE except ______.A.Cetane number indicates ignition qualityB.The lower value the cetane number is of, the poorer the ignition quality will beC.Cetane number isn't the only measurement of ignition quality.D.Cetane number is measured by Redwood instrument【单选】The device that most commonly utilizes the principle of electromagnetic induction is the ______.A.diodeB.transformerC.transistorD.rheostat【单选】The engineer officer in charge of the watch shall ensure that ______are kept under constant surveillance.A.the devices and systems in chargeB.the communication devicesC.the main propulsion plant and auxiliary systemsD.the steering gear【单选】The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and ______.A.reduce water temperatureB.reduce water turbulenceC.provide an air cushionD.allow for an increase in water volume as the engine warms up【单选】The extended aeration process consists of _____ the liquor either by bubbling air through it or by agitating the surface.A.deoxygenating B.oxygenatingC.chemicalizingD.disinfecting【单选】The frequency output of an operating alternator is controlled by the ______.A.relative speed of the rotor polesB.number of turns of wire in the armature coilC.strength of the magnets usedD.output voltage【单选】The instrument which the emergency switchboard doesn't need is ______.A.ammeter B.voltageC.wattmeterD.synchronous meter【单选】The load sharing characteristics of two diesel generators operating in parallel are mostly dependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings【单选】The lubricating oil purifier may ______ oil from the drain tank and ______ the clean oil into the supply line.A.take; takeB.discharge; takeC.discharge; dischargeD.take; discharge 【单选】The magnetic field is provided by electromagnets so arranged that adjacent poles have ______.A.opposite polarityB.the same polarityC.negative polarityD.positive polarity 【单选】The main objective of ISPS Code is ______.A.to prevent the human injury and the loss of lifeB.to specify the measures to enhance maritime securityC.to avoid the damage to the environment, particularly to the marine environmentD.to ensure the compliance with conventions【单选】The main objective of the SOLAS Convention is ______.A.to specify minimum standards for the construction, equipment and operation of ships.B.to specify minimum standards for the training, certification and watch keeping for seafarers.C.to provide minimum standards for the operation of vessels.D.to tell the company how to run the business.【单选】The majority of automatic mooring winches are _____ to improve the backward efficiency of the gear train for rendering.A.spur gearedB.screw gearedC.worm gearedD.belt driven【单选】The most critical part of the bunkering operations, which can result in an oil spill, is when the ______.A.hose joints are made upB.tanks are being topped offC.system is being lined upD.pumping operation is first started【单选】The officer in charge of an engineering watch shall have the knowledge of ERM principles, including obtaining and maintaining ______.A.situational awarenessB.safety awarenessC.environmental awarenessD.anti-pollution awareness【单选】The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in _____ of operation are immediately implemented. A.ahead or astern B.fore or aft C.up or down D.speed or direction【单选】The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by ______.A.passing it through the expansion valveB.condensing refrigerant in the system condenserC.passing the gaseous refrigerant through the heat interchanger on the suction side of the compressorD.maintaining a high pressure on the system's receiver【单选】The operator of electrical motors should keep a constant check on the loads they carry because ______.A.low loads necessitate frequent insulation cleaningB.exceeding nameplate values shortens useful lifeC.energy is wasted if full loading is not utilizedD.power factor correction methods are load dependent【单选】The overcurrent relay _____ the motor contactor when the motor exceeds its rated current.A.connectsB.tripsC.foulsD.destructs【单选】The part of a fuse that melts and opens the circuit is made of ______.A.copper and antimonyB.steel and babbittC.aluminum or beryllium alloyD.zinc or an alloy of tin and lead【单选】The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to ______.A.eliminate the necessity for an oil scraper ringB.prevent side thrust and cylinder scoringC.prevent sludge and dirty oil from entering the crankcaseD.scrape oil。
大管轮轮机英语综合(33-48期)
中华人民共和国海事局2004年第1期海船船员适任证书全国统考试题(总第33期)科目：轮机英语试卷代号：803适用对象：无限、近洋航区3000KW及以上船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至68题，每题1分，第69题至76题，每题1.5分,第77题至78题,每题10分。
一、单项选择题：1．The exhaust valve is opened at about the same time ______the air inlet ports are opened.A. beforeB. afterC. whenD. until2．Cylinder wall temperature, fuel oil sulphur, and oil passage ______.A. are interdependentB. are not interdependentC. have nothing to do with each otherD. are independent3．Acid solution ______ in the system can be tested from time to time by putting some on to a piece of lime.A. strengthB. denseC. percentageD. velocity4．Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from ______.A. within the space concernedB. outside the space concernedC. the throttle stationD. within the fire room5．Cylinder oil is a high viscosity mineral oil, with a ______machined to the anticipated sulfur content of the fuel.A. TANB. TBNC. SAND. SBN6．The tendency for lubricating oil to thin out at high temperatures and thicken at low temperatures will be characterized by a ______.A. low viscosity indexB. high viscosity indexC. high neutralization numberD. low demulsibility quality7．When considering the lowest fuel system operating temperature, ______ are important.A. specific gravity or relative densityB. open flash point and closed flash point valuesC. higher calorific and lower calorific valuesD. cloud point and pour point values8．In ______the incoming air is directed upwards, pushing the exhaust gases before it and then the exhaust gases travel down.A. loop scavengingB. cross scavengingC. uniflow scavengingD. supercharging9．______ is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A. An air receiverB. An operating valveC. An automatic valveD. An air distributor 10．Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle, turbo-charged, diesel engine?A. Clogged air intake filters.B. Piston blow-by.C. A defective after-cooler.D. Faulty exhaust valves.11．Misalignment of an engine crankshaft can be detected by measuring______of crank webs for each unit of the engine.A. diametersB. lengthsC. deflectionsD. none of the above12．A crankshaft whose center of gravity coincides with its center line is said to be ______.A. dynamically balancedB. statically balancedC. counter balancedD. resonantly balanced 13．In a diesel engine, the main bearings are used between the ______.A. connecting rod and the crankshaftB. wrist pin and the connecting rodC. camshaft and the engine blockD. crankshaft and the engine block14．We should not start the engine unless the turning gear is ______.A. onB. disengagedC. boltedD. unscrewed15．When the exhaust ports or valves are opened, the ______begin to exhaust.A. carbon and waterB. refrigeration steamC. burnt gasesD. oil sludge16．We'd better take _____to save fuel consumption, you know it would be useless to get there earlier.A. nominal speedB. economical speedC. rated speedD. slow speed17．Shaft sealing in a centrifugal pump can be effected by ______.A. the mechanical sealB. packed stuffing boxesC. either A or BD. neither A nor B 18．Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be ______.A. one size smaller than the pump suction nozzleB. the same size as the pump suction nozzleC. one size larger than the pump suction nozzleD. installed with a short radius elbow at the pump19．The water level in a steaming auxiliary boiler will always ______.A. rise when the steam pressure is increasedB. remain constant as long as the feed pump operatesC. fall when the steam pressure is decreasedD. vary as the steam demand changes20．The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of ______.A. seawater contaminationB. frequent surface blowsC. dissolved oxygen deaerationD. frequent bottom blows21．Sediment collects in a tubular purifier______.A. on top coverB. on sides of bowlC. in drain line on the discsD. on the discs 22．The operating water is supplied under the ______of an oil separator.A. sliding bowl bottomB. bowl hoodC. bowlD. filter units23．The bilge main is arranged to drain any watertight compartment ______ballast, oil or water tanks and to discharge the contents overboard.A. rather thanB. other thanC. in addition thatD. except for24．The oil sludge is burnt in the ______onboard. I‟ll show you the ashes.A. boilerB. main engineC. auxiliary engineD. incinerator25．When making entries in the Oil Record Book, the date, operational code, and item number shall be inserted in the appropriate columns. Furthermore, the required particulars shall be ______.A. recorded only for accidental oil dischargesB. recorded only for operations involving discharge of oily wasteC. signed by the oiler who enters them in the Oil Record BookD. recorded chronologically in the blank space26．Which bearing will carry the load on two small points diametrically opposite to each other?A. NeedleB. Tapered rollerC. RollerD. Ball27．In a general cargo crane, ______ is fitted to raise or lower the jib.A. the slewing motorB. the luffing motorC. the hoisting motorD. none of the above 28．In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?A. When the helm is at any angle other than amidships.B. When the six-way valve is opened.C. When the ram relief valves lift.D. When the rudder angle is different from the position of the helm.29．With reference to rules governing steering gear, which one of the following rules is incorrect ?A. It is required that all ships are provided with two independent steering gear systems that is onemain and one auxiliary.B. The auxiliary gear could be power operated in passenger ships.C. The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigablespeed.D. All moving parts of the steering gear must be guarded against any possible damage.30．A refrigeration system contaminated with moisture can be affected by ______.A. acid formationB. sludge formationC. ice in the expansion valveD. all of the above 31．A dirty intercooler on the ship service air compressor will result in ______.A. decreased compression ratioB. higher than normal power consumptionC. un-loader malfunctionD. water in the lubricating oil32．Which of the problems listed would cause the discharge temperature of an R-22 refrigeration compressor to increase?A. Thermal expansion valve frozen open.B. Suction gas heat exchanger bypassed.C. Condenser clogged or fouled.D. High pressure cutout switch inoperative. 33．Zinc rods are installed in the refrigeration system ______.A. liquid strainerB. liquid receiverC. saltwater condenserD. evaporator34．The fire pumps must be capable of delivering a total quantity of water at a defined head , not less than______ of the total bilge pumping capacity.A. one-thirdB. two-thirdsC. one-fourthD. two-fourths35．Which of the following factors will have the greatest effect on the heating load within a conditioned space?A. Solar gainB. Infiltration and ventilation airC. Occupants inside the spaceD. Entertainment equipment within the space36．On commonly used ships, if two A.C. generators are operated in parallel, the load is distributed evenly by ______.A. varying the D.C. exciter voltageB. varying the reluctance of the air gapC. regulating the speed of prime moverD. shorting out part of the armature windings 37．Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?A. The generator and bus transfer sectionB. The 450 volt, 60 cycle, 3 phase busC. The 120 volt, 3 phase, 60 cycle busD. The 24 volt DC bus38．Which of the following should be the FIRST step in removing a generator from parallel operation?A. Trip the generator off the switchboard.B. Turn off all electrical equipment.C. Remove the load from the 'off going' generator.D. Increase the cycles of the generator staying on the line.39．Which of the listed devices is used to measure pressure and convert it to an electrical signal?A. TransducerB. ReducerC. TransformerD. Rectifier40．An indicator on the main switchboard should show ______the emergency battery is in service or not.A. whichB. whenC. weatherD. whether41．The number of cycles per second occurring in AC voltage is known as the ______.A. phase angleB. frequencyC. wave formD. half mode42．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?A. Make an entry in the official logbook.B. Open the master control valves on the fixed CO2 system.C. Start the fire pump and check discharge pressure.D. Secure auxiliary condenser overboard discharge.43．The additional mark ______ in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery andelectronic devices.A. BRCB. MCCC. AUT-0D. AUT-144．If the atomizer holes are enlarged beyond the maker's recommended size , the atomizer must be ______.A. repairedB. replacedC. replenishedD. repeated45．In a diesel engine, an extremely leaking exhaust valve can cause ______.A. misfiringB. pre-ignitionC. interrupted scavengingD. reduced scavenging 46．One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply to that cylinder is secured. Which of the following problems may be the cause?A. Low loading of the cylinder.B. Excessive cooling of that piston.C. Sluggish ring action on the piston.D. A mechanical defect in a working part.47．Poor combustion in a diesel engine can be caused by ______.A. high compression pressureB. low intake air temperatureC. low exhaust pressureD. high scavenge air temperature48．Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ______.A. reduce engine horsepower outputB. aid in silencing the exhaust noiseC. increase the mean effective pressureD. contribute to effective cylinder scavenging 49．Hearing a strong noise, ______at once.A. the engine stoppedB. the engine was stoppedC. he stopped the engineD. he had stopped the engine50．Fix the fuel injector into______after repair.A. the cylinder linerB. the cylinder coverC. the cylinder jacketD. the piston 51．Lower suction pressure of a pump may be caused by ______.A. too much air in the pipe lineB. closed inlet valveC. empty tankD. leaky pipe52．Diesel engine exhaust temperatures may be used to indicate ______.A. leaking exhaust valvesB. an overloaded cylinderC. a clogged injector nozzleD. all of the above.53．The indications of a scavenge fire are excessive black smoke, ______ and peeling from scavenge trunking.A. turbo-chargers surgeB. spark seen from the drainsC. paint blisteringD. all above are right 54．It is well known that the whole power distribution of the ship‟s electrical services mainly depend on the______.A. sub-boardsB. main switchboardsC. emergency switchboardsD. distribution boards 55．Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ______.A. a shortened ignition delay periodB. a lean fuel/air mixtureC. excess fuel in the combustion chamberD. rapid vaporization of injected fuel droplets56．Oil mist detectors are usually used on board to detect oil mist density within ______.A. the engine crankcaseB. the engine scavenge boxesC. drain tanksD. fuel tanks57．Before doing maintenance on electrical equipment, you should ______.A. turn off power firstB. turn on power firstC. with a test pen in handD. tell C/E 58．When start a screw pump, the by pass valve should be ______.A. closedB. opened fullyC. cracked openD. partly open59．Our company has built a new ship in Hamburg and I am going to fly there to______.A. hand it overB. take it overC. carry it overD. carry it out60．Routine monitoring of a diesel engine should include ______.A. checking for leaksB. checking temperatures and pressuresC. listening for abnormal noisesD. all of the above.61．Which of the precautions listed should be observed when taking on diesel fuel?A. Secure all lighting to the main deck.B. Provide a portable fan to blow away fumes.C. Prohibit smoking in the area.D. Display a black triangle during daylight hours.62．The conventions under which the port state control inspection is carried out include all the following except______.A. SOLAS 74B. MARPOL 73/78C. STCW 78/95D. ISM Code63．A portable foam fire extinguisher is placed in operation by ______.A. turning it upside downB. pressing the foam leverC. squeezing the grip handleD. opening the hose valve 64．In cleaning up an oil spill, the use of chemical agents would ______.A. absorb the oil for easy removalB. remove the oil from the waterC. disperse or dissolve the oil in the waterD. not affect the oil65．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?A. Make an entry in the official logbook.B. Open the master control valves on the fixed CO 2 system.C. Start the fire pump and check discharge pressure.D. Secure auxiliary condenser overboard discharge.66．One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is ______.A.the … snow ‟ whic h is sometimes discharged along with the gas is toxicB. prolonged exposure to high concentrations of CO 2 gas causes suffocationC. rapid dissipation of the CO 2 vaporD. the CO 2 gas is lighter than air and a large amount is required to extinguish a fire near the deck 67．The company should establish procedures to ensure that the ship is maintained______ the provisions of the relevant rules and regulations.A. out of accordance withB. in relation toC. in conformity withD. in connection with 68．The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than ______ by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage ______before their watch.A. 0.08%/ 4 hoursB. 0.08%/ 2 hoursC. 0.04%/ 4 hoursD. 0.04%/ 2 hours二、关联题（每组关联题题干下有4个小题，每小题4个选项）第一组：Because the exhaust gas driven turbo-blower cannot provide enough air at low engine speeds, the pressurized air should be cooled to increase the charge air density. As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engine. So a water separator should be mounted beneath the bottom part of the engine inlet manifold.Lubricating oil from the compressor will pass along the air lines and deposit on them, in the event of a cylinder air starting valve leaking, hot gases would pass into the air pipes and ignite the lubricating oil. If starting air were supplied to the engine, this would further feed the fire andcould lead to an explosion in the pipelines. In order to prevent such an occurrence, cylinder-starting valves should be properly maintained and the pipelines regularly drained. Also oildischarged from compressors should be kept to a minimum, by careful maintenance.69.A water separator is used in order to ______.A. keep the air from being carried into the engineB. keep the moisture from being condensedC. keep the danger from being carried into the engineD. take away the condensate from the air70.Why should we use a charge air cooler?A. In order to increase the charge air temperature.B. In order to increase the charge air pressure.C. In order to reduce moisture condensed.D. In order to increase the charge air density.71.Which of the following may cause an explosion according to the passage?A. Starting air cannot be supplied into the engine.B. Air starting valve leaks and starting air is supplied into the engine.C. Cylinder-starting valves are properly maintained.D. Oil discharged from compressors is kept to a minimum.72.In order to avoid igniting the lubricating oil and leading to an explosion in the pipelines, ______.A. pipelines should be regularly drainedB. cylinder-starting valves should be properly maintainedC. oil discharged from compressors should be kept to a minimumD. A+B+C第二组：Maintenance and OverhaulingSatisfactory and proper operation of the engine depends not only on correct manoeuvring but also on how well it is kept in order. Regular maintenance of the engine helps a lot in preventing early wear of parts and in ensuring a long service as well as the working efficiency of the engine.With various types of engines, of course, the maintenance and overhaul is different. Instruction books are to be referred to whenever necessary.The individual parts of the engine should be inspected and thoroughly cleaned at regular intervals. The periods for such overhaul work depend largely on the quality of the lubricating oil and fuel, on the load and on the efficiency of the operator in locating troubles and remedyingthem in time..During overhaul the safety rules have to be observed as required in order to prevent the danger of accidents. Special precaution is necessary when the engine is running with the lagging removed. During overhauls with the engine shut down, safety measures should be taken to avoid undesirable turning of the crankshaft. All pipes should be pressure-relieved before the repair work is started. Read the pressure gauges and /or check the pipes by carefully loosening the screw plugs or connections.If some parts of the running gear are dismantled, before using the turning gear, make sure that no loose parts are jammed in the crankcase where it is easy for them to cause damage.73.According to the passage, which the following factors are involved to keep the enginesatisfactory and proper running?A. correct manoeuvringB. keep the engine in orderC. refer to the instruction booksD. all of above74.According to the passage, which the following items do influence the periods of the overhaulingwork?A. the quality of the lubricating oilB. the load of the engineC. the efficiency of the operator in locating troubles and remedying them in timeD. all of the above75.According to the passage, we should take special precaution when ____.A. the engine is running with the removal of laggingB. the engine is shut downC. pipes are removedD. the screw plugs or connections are lossened76.According to the passage, line 17 the bold and italic word “it” may propabably mean ____ .A. running gearB. turning gearC. crankcaseD. to cause damage中华人民共和国海事局2003年第3期海船船员适任证书全国统考试题(总第32期)科目：轮机英语试卷代号：803适用对象：无限、近洋航区3000KW及以上船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
轮机大管轮英语真题44期
中华人民共和国海事局2007年第6期海船船员适任统考试题（总第44期）科目：轮机英语试卷代号：803适用对象：无限/近洋航区3000KW及以上船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至68题，每题1分，第69题至76题，每题1.5分，第77题至78题，每题10分.一、单项选择题1. The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the . This has theadvantage of saving weight.A. seatingB. bed-plateC. entablatureD. cylinder block2. A two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the .① MEP is lower and the scavenging air is cooling the exhaust gases② valve overlap in a four strokeA. ①B. ②C. ① and ②D. Neither ① nor ② is correct3. Theoretical perfect combustion in a diesel engine yields by-products of .A. aldehydes and carbon dioxideB. water vapor and carbon monoxideC. nitrogen and carbon monoxideD. water vapor and carbon dioxide4. The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known asA. mechanical lubricatorB. lubrication functionC. forced feed systemD. bearing lubrication5. In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the .A. governor droopB. speeder spring tensionC. fuel rack lagD. load on the engine6. Diesel engines are started by supplying into the cylinders in the appropriate sequence for the required direction.A. cooling waterB. compressing airC. compressed airD. cylinder oil7. Which of the following devices is a common basic element with nearly all mechanical governors?A. Power pistonB. Control rackC. Weights acted on by centrifugal forceD. Isochronous（同步的）droop spring8. Injectors for use with heavy fuel oil must be cooled by either water or light oil to .A. prevent heat corrosion to internal componentsB. increase fuel delivery rate and economyC. prevent pre-ignitionD. avoid carbonization of the nozzle tips9. Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an .A. over-speed tripB. audible/visual alarmC. the ships/boats general alarmD. reserve oil storage tank 10. If clearance between a piston and the cylinder wall is excessive, piston slap will occur. The slap itself is caused by .A. alternation of side thrustB a breakdown of the lube oil film on the cylinderC. worn piston boss piston pin bearingsD. fluctuating gas pressure in tile combustion space11. The major cause of fuel pump and injection system problems is .A. improper adjustmentsB. contaminated fuelC. kinked fuel linesD. excessive engine vibration12. At least ___ cylinders in four--stroke engine will be configured to ensure that the engine can started with the crankshaft at whatever position.A. 6B. 2C. 12D. 813. The main propulsion diesel engine jacket water temperature rises above normal, with the raw sea suction and the expansion tank water level being normal. Which of the following problems is most likely the cause?A. Faulty thermostatic bypass valve.B. Eroded zinc pencils in the heat exchangerC. Steam formation in the expansion tank.D. Excessive leakage from jacket water pump seals.14. Crankcase explosions in propulsion diesel engines result from .A. the splashing of lubrication oil by the crankshaftB. the dilution of crankcase oil with particles of combustionC. broken fuel lines spraying oil on the crankcaseD. the ignition of unburned fuel and air in the crankcase15. Lubrication for the main reduction gears used with diesel engines is usually supplied by .A. oil from the main engine sumpB. an independent lube oil systemC. the stern bearing head tankD. the stem bearing sump tank16. Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed .A. apparent slipB. true slipC. pitchD. propulsive efficiency17. One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of .A. surface fatigue of the gearsB. an inadequate lube oil filmC. plastic flow of the gearsD. fretting corrosion from water18. The heat identified by only a change in temperature is known as .A. sensible heatB. latent heatC. total heatD. residual heat19. The expansion valve used in a refrigeration system regulates the .A. superheat of the gas leaving the compressorB. back pressure in the evaporatorC. temperature in the refrigerated spaceD. degree of superheat of the gas leaving the evaporator20. A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the superheat will result in a/an .A. evaporator pressure decreaseB. evaporator coil over-feedC. evaporator capacity increaseD. expansion valve diaphragm rupture21. In the refrigeration system, a shortage of refrigerant is indicated by .A. the compressor short cycling on high pressure cut out switchB. high suction pressureC. high head pressureD. bubbles in the sight glass22. If a refrigeration system were short of refrigerant, the condition would result in .A. continuous running of the compressorB. high suction pressureC. high discharge pressureD. short cycling of the compressor on the water failure switch23. If the suction pressure at the refrigeration compressor is below normal, the cause can be .A. refrigerant overchargeB. overfeeding by the expansion valveC. a restricted suction strainerD. due to short cycling of the compress24. A centrifuge arranged to separate two liquids is known as .A. an oily water separatorB. a purifierC. a centrifugal compressorD. a clarifier25. If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the .A. oil has a tendency to emulsify in the bowlB. purifier will act as a clarifier at the discharge ringC. oil will be lost through the water discharge portsD. oil solids will be deposited only at the intermediate top disk26. Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?A. hydraulic pumpsB. valvesC. hydraulic cylindersD. hydraulic motors27. The usual number of single-acting pistons used in a variable stroke axial-piston pump is .A. 3 or 5B. 5 or 7C. 7 or 9D. 9 or 1128. The follow-up gear on an electro-hydraulic steering gear .A. relieves excessive fluid pressureB. takes the pump off stroke when the desired rudder angle is attainedC. allows for rudder movement faster than the movement of the ship'sD. returns the rudder to amidships when the wheel is released.29. While inspecting the steering system at sea, you should check for .A. air bubbles in the sight glassB. any leaks in the systemC. over-travel in the rudder angle indicatorD. lost motion in the rams30. After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?A. The relief valves in the system should be readjusted.B. The filters and strainers should be checked frequentlyC. All system pressure should be readjusted.D. The system should be drained and renewed with a fluid of different operating characteristics.31. Before performing any maintenance on a hydraulic system storing energy in an accumulator, you should .A. pressurize the system to test for leaksB. bleed off all pressure within the systemC. operate the machine until it reaches normal temperatureD. disconnect the pump pressure control switch32. The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the .A. prime mover speedB. exciter output voltageC. load on the alternatorD. number of poles33. The field coils and the armature . This is in fact the arrangement adopted for large, heavy duty alternators.A. are stationary / rotatesB. are stationary /is stationaryC. rotate / is stationaryD. rotate / rotates34. You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow direction. This indicates that the frequency of the incoming machine is .A. higher than the bus frequencyB. lower than the bus frequencyC. file same as file bus frequency but out of phase with itD. the same as the bus frequency, and the circuit breaker may be closed at nay pointer position35. The frequency of an AC generator is controlled by the ___.A. rheostatB. governorC. exciterD. capacitor36. Electrical supply is always needed even if only for lighting so after a ship goes into service it is extremely rare for the main bus-bars to be dead, it therefore follows that the bus-bars are continuously alive the life of the ship.A. alongB. withC. throughoutD. for37. After a ship enters service it is for the main bus-bar to be made dead.A. usuallyB. commonlyC. exceptionalD. unavoidably38. The difference between measured and desired values is called .A. make-upB. desired valueC. deviationD. set value39. The unit of electrical resistance is the .A. ampereB. voltC. wattD. ohm40. You must take good care of the drainage cock of the air control system. Because lead scale formed which might malfunctions the pilot control valve and other instruments.A. the temperatureB. the rustC. the pressureD. the humidity41. The mode of control employed by an alarm circuit is a .A. two position controlB. single speed floating controlC. proportional speed floating controlD. reset control42. With UMS, when the engine room is unwatched will control the main engine.A. the bridge officer on watchB. the chief engineerC. the duty engineerD. the duty motorman43. Before "stand by" is rung on the engine telegraph, it is usual to give the main diesel engine a brief trial ahead and astern.A. with powerB. on powerC. with airD. on air44. When under maneuvering conditions with the machinery being manually operated the control unit or console should beA. automatically controlledB. continuously mannedC. off powerD. continuously unmanned45. Which of the listed conditions can be considered as the single greatest cause of accident?A. SpeedB. Excessive knowledge or skillC. Human errorD. Excitement46. A fire in a pile of dunnage would be classified as a .A. Class 'A'B. Class 'B'C. Class 'C'D. Class 'D'47. Which of the listed fire extinguishers cannot be easily recharged aboard ship?A. Soda acidB. Carbon dioxideC. Dry chemicalD. cartridge-operated Foam48. CO2 extinguishes a fire by .A. a blanket of bubbles formed on theB. smotheringC. coolingD. isolating the heat from the fuel49. As a duty engineer, as soon as your hear the fire emergency signal, you should ensure that the .A. ring buoys are thrown overboardB. engines are stoppedC. fire pumps are startedD. life preservers have been issued to everyone50. To safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?A. Keep a load on the hoist until all personnel are finished working.B. Set the load on a movable dolly when transportation may be needed.C. Have one man keep a hand on the load to steady it.D. Insure that the lifting gear capacity is not exceeded.51. If a used lube oil analysis indicates excessive chromate content, this means .A. air filtration is inadequateB. engine coolant is leaking into the lube oilC. fuel oil is leaking into the lube oilD. the piston rings are excessive worn52. Emulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are or if ally soldered joints exit.A. chromedB. weldedC. galvanizedD. bolted53. The tool is used in precision work to smooth or enlarge a slightly undersized hole.A. round outB. round fileC. reamerD. hole driller54. When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?A. The propeller hub taper and shaft keyway should be inspected for cracks or corrosion.B. The stern bearing alignment with the stern frame should be checked.C. The interior of the stern tube should be inspected for leaks.D. The shaft liner should be removed and inspected for cracks.55. The depth of the ship below the waterline measured vertically to the lowest part of the hull is called .A. trimB. leanC. draftD. tonnage56. The additional mark in the Classification Certificate for Machinery represents the propulsion apparatus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.A. BRCB. MCCC. AUT-0D. AUT-l57. Oil Pollution Regulations require any transfer or discharge of oil or oily mixtures to be recorded in the .A. bridge logB. Master's logC. engine room logD. oil record58. The International Oil Pollution Prevention Certificate is valid for a period of .A. one year from the date of issueB. five years from the date of issueC. three years from the date of issueD. four years from the date of issue59. During PSC inspection related to the ISM Code, of the Safety Management System (SMS) should be carried out if clear grounds are established.A. a less favorable inspectionB. a more favorable inspectionC. a less detailed inspectionD. a more detailed inspection 60. The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the .A. Navigation Log BookB. Engine Room Log BookC. Oil Record BookD. Muster List61. STCW78/95 Convention states that the officer in charge of the engineering watch is the representative.A. ship-owner'sB. master'sC. chief engineer'sD. manager's62. All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible ____ to prevent such pollution, particularly within the framework of relevant international and port regulations.A. steps B, procedures C. precautions D. programs63. The officer in charge of the engineering watch shall ensure that all machinery involved with the maneuvering of the ship can immediately be placed in the __ of operation when notified that the ship is in congested waters.A. manual modeB. automatic modeC. remote modeD. follow-up mode64. In the event of a small bunker oil spill on deck occurring while bunkering, you should .A. wash down the area immediately with a fire hoseB. wash down the area with keroseneC. cover the area with absorbent materialD. cover the area with foam65. A segregated ballast system is a system where .A. all ballast is processed through the oily water separatorB. ballast is taken on and discharged through a separate main deckC. ballast and cargo tanks are separated by cofferdamsD. all ballast lines, tanks, and pumps are independent of those used for oil66. The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the of merchant ships.A. pollutionB. economizationC. safetyD. efficiency67. The objectives of the ISM Code are to ensure ①safety at sea②prevention of human injury or loss of life③avoidance of damage to the marine environment and to propertyA. ①B.②C.②③D.①②③68. means the level for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident.A. Security level 1B. Security level 2C. Security level 3D. Security level 4二、关联题（关联题题干下有4个小题，每小题4个选项）第一组An automatic system usually consists of a control system and an information system. A control system is a system which measures the condition of some entity and, with the information, governs the state of a variable; i.e., speed, temperature, pressure, position, etc. The open-loop system is the simplest form a control system may assume. It is distinguished from the closed-loop system by the lack of an input which measures the state of the controlled variable; such an input is called a feedback. In modern ships the open-loop system has practically disappeared and the closed-loop system which operates with a feed-back is extensively used. An information system serves the parallel function of monitoring system or plant performance. The monitoring function may serve a number of purposes; specifically it may indicate values of controlled variables to guide remote control operations, w arn ofoff-limit conditions and provide record of performance. In many cases a visual and audible alarm may be provided to warn of off-limit conditions on board ship and, associated with this, the important variables will be recorded on demand. The automatic control system can be more sophisticated by incorporating digital-processing equipment, that is, a computer. This computer is usually fed with signals from all sensors. It scans the values of the sensors and generates alarm signals for off-limit conditions, acting as a super-supervisor. Sometimes, it can even make necessary and take the necessary action to optimize performance without human intervention.69. The closed-loop system differs from the open-loop system byA. the lack of a feedbackB. the presence of a feed backC. the lack of a computerD. the presence of a computer70. A feedback is an input ____A. which governs the state of a variableB. which provides a visual and audible alarmC. which indicates values of controlled variablesD. which measures the state of the controlled variable71. The monitoring function may serve all of the following purposes exceptA. instigating corrective actionB. indicating values of controlled variablesC. warning of off-limit conditionsD. providing record of performance72. The word "off-limit" in the passage may mean .A. off-setB. off-stateC. within limitsD. beyond the limit第二组The only attention that heat exchanger should require is to ensure that the heat transfer surfaces remain substantially clean and the flow passages generally clear of obstruction. Indication that undue fouling is occurring is given by a progressive increase in the temperature difference between the two fluids, over a period of time, usually accompanied by a noticeable rise in pressure loss at a given flow.Fouling on the sea-water side is the most usual cause of deterioration in performance. The method of cleaning the sea water-side surfaces depends on the type of heat exchanger. With shell-and-tube heat exchangers, the removal of the header covers or, m the case of the smaller heat exchangers, the headers themselves, will provide access to the tubes. Obstructions, dirt, scale etc., can then be removed, using the tools provided by the heat exchanger manufacturer. Flushing through with fresh water is recommended before a heat exchanger is returned to service. In some applications, such as piston oil cooling, progressive fouling may take place on the outside of the tubes. Most manufactures recommend a chemical flushing pr6cess to remove this in situ~ without dismantling the heat exchanger.Plate heat exchangers may be cleaned by unclamping the stack of plates and mechanically cleaning the surface of each plate as recommended by the manufacturers. The plate seals may require replacement from time to time and here the manufacturers' instructions should be closely followed 73. By which of the following indication, can we conclude that the lube oil-sea water heat exchanger is unduly fouled?A. the heat exchanger lube oil inlet temperature loweringB. the heat exchanger sea-water outlet pressure riseC. the heat exchanger temperature difference between lube oil and sea water increasingD. the heat exchanger pressure difference between sea water inlet and outlet decreasing74. What is the most usual reason for the fresh water-sea water heat exchanger fouling in the sea side?A. lube oil sludge accumulating in itB. dirt and scale etc., formed on the surfacesC. deformation of the tubes and the shell or the platesD. lube oil leakage into sea-water side75. According to the passage, it is recommended that the heat exchanger side be cleaned by .A. flushing with chemical solvent without being dismantledB. brushing mechanically after being disassembledC. flushing with flesh water onlyD. flushing with clean oil only76. According to the passage, which of the following statement is not true?A. the heat exchanging surfaces should be kept substantially cleanB. the heat exchanger flow passages should be clear of obstructionC. seals for the plate heat exchanger needs to be renewed oftenD. the cleaning process of the plate heat exchanger should be done following our experiences only三、中译英（共2题，请将答案写在答题纸上）77. 在船舶以主机“正常全速”运行时，尽管速度设定及压力正常，转速逐渐下降，驾驶台控制立即转换至机旁控制。
中华人民共和国海事局第46期航海英语真题(附答案)
中华人民共和国海事局2008年第6期海船船员适任统考试题（总第46期）科目：航海英语试卷代号：903适用对象：无限航区，近洋航区船舶二、三副（本试卷卷面总分100分，及格分数70分，考试时间100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在相应位置上用2B铅笔涂黑。
第1题至88题，每题1分，第89题至96题，每题1.5分。
一、单项选择题rmation on the opening times and characteristics of radiobeacons can be found in whichpublications?A. List of LightB. Coast PilotC. Sailing DirectionsD. List of Radiobeacons2.Mariners not entering the port are ______ to keep at least one mile off.A. advisedB. reportedC. compliedD. supplied3.The velocity of the current in large coastal harbors is______.A. predicted in Tidal Current TablesB. unpredictableC. generally constantD. generally too weak to be of concern4. A mercator chart is a______A. cylindrical projectionB. simple conic projectionC. polyconic projectionD. rectangular projection5.Why does distance always have to be measured from the nearest scale on a Mercator chart?A. Because it is the most efficient wayB. Because it varies with the change of latitudeC. Because it varies with the change of longitudeD. Because it is the most straight line6.Who is responsible for the voyage plan?A. The person who has done the planningB. The masterC. The navigation officerD. The owner7.Charted depth is the______.A. vertical distance from the chart sounding datum to the ocean bottom, plus the height of tideB. vertical distance from the chart sounding datum to the ocean bottomC. average height of water over a specified period of timeD. average height of all low waters at a place8.Defense plans may cause the operation of electronic aids to navigation to be suspended with ______.A. no noticeB. one day's noticeC. a week's noticeD. thirty (30)days’ notice9.Periodic publications notifying change in, or additions to, previously published navigationaldate are______.A. SupplementsB. Annual SummaryC. Navigational WarningD. Notices to Mariners10.______is a full nautical record of a ship's voyage, written up at the end of each watch by theofficer of the watch.A. Sea ProtestB. Deck LogC. Accident ReportD. Seaman's Book11.Do you need to measure oxygen levels before entering an enclosed space?A. Yes, alwaysB. NoC. No if you measure for toxic gasesD. yes, but not if you ventilate properly first for 24 hours12.The extent of the damage could not be ________though I inspected it with the ChiefStevedore in charge.A. sureB. containedC. ascertainedD. applied13.If you do not wear goggles and helmet, your chances of being _______will be greater.A. beatenB. damagedC. hurtD. stricken14.Before sailing, mariners on duty shall check the headings of magnetic compass by comparison with______.A.ship’s clockB. engine movement recorderC. repeatersD. navigation lights15.Painting on _______ is prohibited because it will weaken its sensibility.A. ship shellB. exterior of winchesC. hydrostatic releaseD. hold ladders16.You are on watch and the pilot has just anchored the vessel. The next thing that you should doafter the anchor has been let go is to_______.A. stop the enginesB. escort the pilot to the accommodation ladderC.plot the vessel’s position on the chartD. make a round of the weather decks17.SOLAS is the abbreviation of __________.A. International Maritime Dangerous Goods Carried by SeaB. International Code for the Construction and Equipment of ships Carrying Gases in BulkC. International Convention for the Safety of life at SeaD. International Regulations for Preventing Collisions at Sea18.The SOLAS Convention was developed by the_________.A. IMDG conferenceB. American Bureau of ShippingC. International Maritime OrganizationD. American Institute of Maritime Shipping19.How to determine the density of the slop after tank washing?A. By use of an interferometerB. By use of a hydrometerC. By use of an interfaceD. By use of a thermometer20.Any discharge into the sea of oil or oily mixtures from ships to which this Annex of MARPOL73/78 applies shall be _______except when special conditions are satisfied.A. requiredB. requestedC. promotedD. prohibited21.To EASE A LINE means to ________.A. cast offB. double up so that one line does not take all the strainC. pay out line to remove most of the tensionD. slack it off quickly22.Finally, when your ship is alongside, don’t forget__________.A. having rat guards properly mounted on your mooringsB. to have rat guards properly mounted on your mooringsC. to have rat guards properly mounted at your mooringsD. having rat guards properly mounted on your moorings23.THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THEPILOT CAN SAFEL Y EMBARK is _______.A. Ground speedB. Boarding speedC. Relative speedD. Speed of the vessel24.If you have steel wire ropes leading in the same direction with other ropes, which will take themost of the load?A. Steel wire ropeB. ManilaC. NylonD. Polypropylene rope25.Heave is motion along the______.A. longitudinal axisB. transverse axisC. Vertical axisD. centerline axis26.The side of a ship which is farther from the winds is______.A. fairway sideB. open sea sideC. lee sideD. roadstead side27.A vessel is considered to be restricted in her ability to maneuver under the rules if sheis______.A. at anchorB. mine-clearingC. engaged in fishingD. engaged in towing28.Vessels shall be deemed to be in sight of one another only when one ______ from the other.A. can be observed visuallyB. can be observed by radarC. can be located on the radarD. can be heard29.Every vessel shall proceed at a safe speed _____ the prevailing circumstances and conditions.A. adapted toB. used byC. liable toD. adaptation to30.An overtaken vessel means a vessel______.A. which has been overtaken by another vesselB. which is going to be overtake another vesselC. which has overtaken another vesselD. which is going to be overtaken by another vessel31.An anchored vessel on pilotage duty must show which light(s) at night?A. A sternlight onlyB. Anchor lights onlyC. A white light over a red light onlyD. A white light over a red light and anchor lights32.What is the characteristic of a quick light?A. show group of 2 or more flashes at regular intervalsB. Durations of light and darkness are equalC. Shows not less than 60 flashes per minuteD. Shows quick flashes for about 5 seconds followed by a 1 second dark period33.A SEAMARK, LE.A BUOY, INDICATING THE NORTH, EAST, SOUTH OR WESTFROM A FIXED POINT, E. G. A WRECK is______.A. Entrance buoyB. New buoyC. Port buoyD. Cardinal buoy34.A line connecting all possible positions of your vessel at any given time is a______.A. Longitude lineB. Latitude lineC. Line of positionD. Fix35.Spring tides are tides that______.A. have lows lower than normal and highs higher than normalB. have lows higher than normal and highs lower than normalC. are unpredictableD. occur in the spring of the year36.Spring tide occur______.A. when the moon is new or fullB. when the moon and sun have declination of the same nameC. only when the moon and sun are on the same sides of the earthD. at the beginning of spring when the sun is over the equator37.Deballasting a double bottom has what effect on KG?A. KG is increasedB. KG is decreasedC. KG is not affectedD. KG increases at light drafts and decreases at deep drafts38.The difference between the initial trim and the trim after loading is known as______.A. trimB. change of trimC. final trimD. change of draft39.A semisubmersible which will not remain upright and will assume a list either to port or tostarboard is likely to have______.A. a large TCGB. a negative GMC. excessive ballastD. insufficient deck load40.What is the main purpose of dunnage?A. To act as ballast for light vesselsB. To provide ventilation and drainage for cargoC. To secure the tarpaulins in placeD. to support weakened bulkheads41.All the holds to be loaded with grain must be swept ______commencement of loading.A. cleanly/duringB. clear/meanwhileC. clean/betweenD. clean/prior to42.Protection of cargo against tainting damage can best be obtained by______.A. Ventilating the spaceB. Not ventilating the spaceC. Proper use of paper separation and dunnageD. Segregation of cargo by using different hatches43.A ship's forward draft is 22′04"and its after draft is 23′00". The draft amidships is 23′04".This indicates a concentration of weight______.A. at the bowB. in the lower holdsC. amidshipsD. at the ends44.Foreman, the ship ______, please get the stevedores to fill the port wings with heavierpackage.A. lists to starboardB. is shifting to starboardC. is inclined to starboardD. is listing to starboard45.You are kindly requested to supply the necessary tallyman to do ______on board the shipduring the discharging of the cargo.A. the tallying workB. the lashing workC. the cleaning workD. the work of opening and closing hatches46.During loading or discharging, the tallymen must make contact with ______on duty so as tosolve problems on time.A. ship ownerB. ship's officersC. shippersD. consignors47.CAPE WEST WIND WEST TO SOUTHWEST 15 TO 20 KNOTS WEATHER SHOWERS.This description is likely to be under the heading of_______.A. FORECASTB. STORM WARNINGC. GENERAL SITUATIOND. MAP ANAL YSIS48.When air is at its dew point it______.A. will contain no additional moistureB. has the lowest relative humidityC. cannot keep up its moistureD. has a low absolute humidity49.______causing strong winds and rough sea north west bay of BiscayA. strong low pressureB. strong high pressureC. steep pressure gradientsD. steep gradients pressure50.In the doldrums you will NOT have______.A. high relative humidityB. frequent showers and thunderstormsC. steep pressure gradientsD. frequent calms51.The best estimate of the wind direction at sea level can be obtained from observing thedirection of the______A. cloud movementB. vessel headingC. wavesD. swells52.Most propellers on merchant vessels are constructed of______.A. manganese bronzeB. cast ironC. mild steelD. improved plow steel53.The collision bulkhead is located______.A. on the bridge deckB. between the passenger and cargo areasC. at the stern of the shipD. as the first watertight bulkhead ahead54.Which is the summer load waterline on the load waterline mark? ______.A. The first line at the bottomB. The second line from the bottomC. The third line from the bottomD. The fourth line from the bottom55.All marine low-speed diesels are of what design?A. Four-strokeB. Two-strokeC. Electronic ignitionD. Forced exhaust56.The holding capability of an anchor is primarily determined by the______.A. shape of the anchorB. stowage of the anchor on boardC. anchor's ability to dig inD. size of the vessel and its draft57.The required portable radio apparatus on an international voyage must be stowed in______.A. the Master's quartersB. the ship's officeC. the radio room, bridge, or protected locationD. an unlocked cabinet next to the station bill58.A radar range to a small, charted object such as a light will provide a line of position in theform of______.A. straight lineB. ArcC. parabolaD. Hyperbola59.______is on the panel of radar.A. KEYLOCKB. REPEATERC. STA TIC INVERTERD. ANTI-CLUTTER-SEA60.Does current and drift affect the CPA/TCPA calculations on a true motion display?A. YesB. NoC. Only a little bitD. Yes, very seriously61.If the magnetic heading is greater than the compass heading, the deviation is______.A. eastB. westC. northD. south62.Deviation is the angle between the______.A. true meridian and the axis of the compass cardB. true meridian and the magnetic meridianC. magnetic meridian and the axis of the compass cardD. axis of the compass card and the axis of the compass card63.Variation is a compass error that you______.A. can correct by adjusting the compass cardB. can correct by adjusting the compensating magnetsC. can correct by adjusting the vessel's headingD. cannot correct64.How much can the AIS broadcast made be overloaded without any significant operational effect?A. 50-100%B. 200-300%C. 400-500%D. No overload is accepted65.Which statement concerning GPS is TRUE?A. It cannot be used in all parts of the world.B. There are 12 functioning GPS satellites at present.C. It may be suspended without warning.D. Two position lines are used to give a 2D fix.66.The GPS satellite orbits the earth in approximately______.A. 3 hoursB. 6 hoursC. 12 hoursD. 24 hours67.The maritime radio system consisting of a series of coast stations transmitting coastal warningis called______.A. NA VTEXB. HYDROLANT/HYDROPACC. NA V AREAD. SAFESEA68.Which action should you take after sending a false distress alert on VHF?A. send a DSC cancellation message on Ch-70.B. make a voice announcement to cancel the alert on Ch-16C. make a voice announcement to cancel the alert on Ch-13D. Make a voice announcement to cancel the alert on Ch-22A69.RESULT OF STARCH NEGATIVE means______.A. the search has found nothingB. the derelict has been foundC. the derelict has been locatedD. the derelict has been sighted70.If you receive the signal over radiotelephone of "Romeo Papa Tango" while using theInternational code of signals, you should______.A. report to the callerB. repeat your last transmissionC. continue since be received your last transmissionD. end the transmission71.The generators on your ship have shut down. leaving you without navigation lights. Whichemergency signal would you transmit over the VHF radio to alert vessels in the area of yourpredicament?A. Mayday Mayday MaydayB. Pan Pan PanC. Security Security SecurityD. lights out lights out lights out72.The pilot(embarked)the ship at 1830 hoursA. boardedB. leftC. pilotedD. loaded73.Cleaning, painting and repairing work is known as______.A. maintenance workB. lashing workC. tallying workD. overtime work74.The lines forward from the bow and aft from the stern when a vessel is moored to the dock are ______.A. bow and stern linesB. breast linesC. halyardsD. warps75.A common class of wire rope used for mooring is the 6×19 class. What does the 6 represent?A. Factor of safetyB. number of wires per strandC. number of strands per wire ropeD. number of wires in the core76.It is NOT advisable to use nylon for alongside towing because it______.A. stretches too muchB. is too difficult to make fastC. parts too readilyD. is too susceptible to mildew77.The end of the joint with the exterior threads is called the______.A. pinB. stemC. boxD. stand78.An orange flag showing a black circle and square is a______.A. signal indicating a course changeB. distress signal of asking to communicate with another vesselC. signal of asking to communicate with another vesselD. signal indicating danger79.The following information may not be required to be communicated to a distressed craft?A. Own vessel identity, call sign, name and positionB. Own vessel speed and ETA to distressed craftC. distressed crafts true bearing and distance from shipD. Rescue award if successful80.A fuel-air mixture below the lower explosive limit is too______.A. rich to burnB. lean to burnC. cool to burnD. dense to burn81.Which of the following materials has the best heat conduction?A. gasB. liquidC. metalD. wood82.A self-contained breathing apparatus is used to______.A. make underwater repairs to bargesB. determine if the air in a tank is safe for menC. enter areas that may contain fumes or lack oxygenD. resuscitate an unconscious person83.What should you do with your emergency position indicating radio beacon if you are in alifeboat during storm conditions?A. Bring it inside the liferaft and leave it on.B. Bring it inside the liferaft and turn it off until the storm passes.C. Leave it outside the liferaft and leave it on.D. Leave it outside the liferaft and turn it off.84.After launching, an inflatable raft should be kept dry inside by ______.A. opening the automatic drain plugsB. draining the water pocketC. using the electric bilge pumpD. using the bailers and cellulose sponge85.______ is the most visible signal of distress from a lifeboat at sea in the daytime.A. Smoke signalB. Flash signalC. Fire signalD. Radio emergency transmission86.Most minor spills of oil products are caused by ______.A. equipment failureB. human errorC. major casualtiesD. unforeseeable circumstances87.You should FIRST treat a simple fracture by ______.A. attempting to set the fractureB. preventing further movement of the boneC. applying a tourniquetD. alternately applying hot and cold compresses88.What is the proper first aid for LPG in the eye?A. Apply an ice pack to the eye.B. Keep the eyelid closed.C. Flush the eye with plenty of water.D. Rub the eye area clean.二、关联题（每组关联题题干下有4个小题，每小题有4个选项）第一组A ship’s head up, or un-stabili sed, radar display has the ship’s heading marker fixed at 000°, at the top of the screen.All targets, fixed or moving, then move relative to the ship’s position in the center of the screen and the heading marker.As the ship moves through the water, fixed target appear to track down the screen on a reciprocal heading at the speed the ship is moving and when the ship alters course targets appear to rotate in the opposite direction to that of the ship, so targets appear to move on the radar screen while the ship’s heading remains fixed. The coating on a radar display is designed to allow a certain amount of afterglow（余辉）of targets, which in the ship’s head up mode causes smearing（拖尾）and may make the identification of smaller targets difficult. In addition, when targets, particularly large landmasses, are in close proximity interference occurs, which can further inhibit the detection of small targets.89.When radar is set to ship’s head up display, all fixed targets displayed on the screen willappear to ______.A. track down the screen on a reciprocal heading at the speed the ship is movingB. rotate in the same direction as the ship rotatesC. make the identification of smaller targets difficultD. allow a certain amount of afterglow of targets90.In the ship’s head up mode, if the ship rotates starboard-wise all fixed targets on the screenwill appear to ______.A. rotate starboard-wiseB. rotate port-wiseC. remain stationaryD. move on a reciprocal heading at the speed the ship is moving91.Afterglow of targets will ______.A.have the ship’s heading marker fixed at 000°B. cause the fixed targets to remain fixedC. inhibit the detection of small targetsD. make the identification of smaller targets difficult92.It can be concluded that the instrument referred to in this passage is most likely a/an ______.A. ordinary radarB. ARPAC. specially designed radarD. radar which is out of order 第二组The Chief Officer, or First Mate as he is often called, is the Master’s chief officer and head of the Deck Department. He is assisted by a Second Officer(Mate) and a Third Officer(Mate), and sometimes a Fourth Officer(Mate). Several companies employ a First Officer as well as a Chief Officer.The Deck Department also includes a Boatswain (Bosun) and a Carpenter，both petty officers，and a number of ratings. These made up of Able Seamen (AB)，Ordinary Seamen (OS) and a middle grade known as Efficient Deck Hands (EDH). There are other grades of seamen. On some ships Navigating Cadets are carried for training purposes. The Chief Engineer is head of the Engine Department. He is assisted by a Second，Third，Fourth and sometimes Fifth Engineer. An Electrical Officer may also be carried.The engine room petty officers are the Storekeeper and Donkeyman. On tankers there is also a Pumpman. He is also a petty officer. The engine room ratings are Firemen and Greasers. There may also be Engineer Cadets. The Catering Department is under the Chief Steward. It is divided into a saloon and galley section. The former is headed by the Second Steward，the latter by the Ship's Cook. They are both usually petty officers. They are assisted by several stewards and cooks，and by a number of junior ratings. The Radio Department often consists of only one man: the Radio Officer. On ships where continuous radio watches are kept there may be three radio officers: a Chief，Second and Third.93.________ is not a petty officer.A. BoatswainB. Second StewardC. Radio OfficerD. Storekeeper94.EDH is rank which is higher than________.A. Second StewardB. ABC. OSD. Chief Engineer95.Storekeeper belong to ________.A. Deck DeptB. Engine DeptC. Catering DeptD. Radio Dept96.There are ________ departments on bard a big ship according to the passage.A. twoB. threeC. fourD. five。
辽宁海事局航海类甲类三副英语历届真题第46期
中华人民共和国海事局2008年第46期海船船员适任统考试题（总第46期）科目：航海英语试卷代号：903rmation on the opening times and characteristics of radiobeacons can be found in which publications?A.List of LightB.Coast PilotC. Sailing DirectionsD.List of Radiobeacons2.Mariners not entering the port are ______ to keep at least one mile off.A.advisedB.reportedpliedD. supplied3.The velocity of the current in large coastal harbors is______.A.predicted in Tidal Current TablesB. unpredictableC.generally constantD. generally too weak to be of concern4. A Mercator chart is a______A.cylindrical projectionB. simple conic projectionC.polyconic projectionD. rectangular projection5.Why does distance always have to be measured from the nearest scale on a Mercator chart?A.Because it is the most efficient wayB.Because it varies with the change of latitudeC.Because it varies with the change of longitudeD.Because it is the most straight line6.Who is responsible for the voyage plan?A.The person who has done the planningB. The masterC.The navigation officerD. The owner7.Charted depth is the______.A. vertical distance from the chart sounding datum to the ocean bottom, plus the height of tideB. vertical distance from the chart sounding datum to the ocean bottomC. average height of water over a specified period of timeD.average height of all low waters at a place。
轮机英语历年真题46期
中华人民共和国海事局2008第2期海船船员适任统考试题(总第46期)科目：轮机英语试卷代号：805适用对象：无限/近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至88题，每题1分，第89题至96题，每题1.5分。
一．单项选择题1. In order to control thermal stresses, some type of modern engines use pistons with _______.A. heavy wall and intensive coolingB. heavy wall and no coolingC. thin wall and no coolingD. thin wall and intensive cooling2. The average pressure exerted on a piston during each power stroke is termed ________.A. indicated horsepowerB. mean effective pressureC. exhaust back pressureD. compression pressure3. The ignition quality of a diesel fuel is indicated by the ________.A. cetane numberB. volatility pointC. viscosity indexD. octane number4. A piston in a four-stroke/cycle diesel engine makes four strokes during each _________.A. crankshaft revolutionB. mechanical cycle of operationC. period of two combustion cyclesD. cycle of two events5. Crankshafts of medium speed engines are _________ from a single piece of steel.A. unusually solid weldedB. never be solid forgedC. almost invariably solid forgedD. almost invariably be welded\6. The starting air entering the cylinder begins when the piston _________.A. has nearly come to the TDCB. has just past the TDCC. has nearly come to the BDCD. has just past the BDC7. A main bearing consists of two shells which are secured by means of studs and _________.A. tie rodsB. through boltsC. lead wiresD. bearing caps8. Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of _________.A. less even torqueB. higher cylinder head temperatureB. fewer power strokes per revolution D. greater weight/size requirements9. _________ controls the fuel oil temperature in order to provide oil the correct viscosity for combustion.A. The viscosity regulatorB. The temperature controllerC. The flow meterD. The pressure switch10. In a diesel engine lube oil system, which of the following parts should be lubricated first?A. Camshaft bearingsB. Main bearingsC. Piston crownsD. Cylinder walls11. A large, low-speed, main propulsion diesel engine uses sea water to directly cool the_________.A. cylinder headsB. exhaust valvesC. scavenging airD. injectors12. In a turbocharger, inlet air velocity is increased in the _________.A. inlet nozzle ringB. stationary diffuser passagesC. compressor outlet voluteD. rotating impeller vanes13. Each cylinder has one starting valve which is usually opened by air pressure and closed by_________.A. nuts and boltsB. new jointsC. spring forceD. sealing rings14. In a simple mechanical governor, the _______.A. centrifugal force rotates the ball-headB. flyweight centrifugal force is balanced by spring forceC. flyweight centrifugal force is balanced by hydraulic pressureD. speeder spring alone actuates the fuel control rod15. A pyrometer is an instrument commonly used to measure _________.A. cylinder pressureB. flame intensityC. exhaust gas temperatureD. crankshaft axial alignment16. After starting a diesel engine, which of the listed operating conditions should be checked first?A. Air box pressureB. Lube oil pressureC. Exhaust temperaturesD. Raw water pressure17. A high temperature alarm or _________ which will melt is used to guard against the explosionof compressor air pipelines.A. a flame trapB. a relief valveC. a fusible plugD. a bursting cap18. What preventative maintenance should be done frequently to diesel engine starting airreceivers?A. Drain the accumulated moisture.B. Test the relief valves.C. Watch the temperature to prevent fluctuations in pressure.D. Clean the interior to remove oil and foreign matter.19. In reducing engine speed to an efficient propeller speed by the use of reduction gears,_________.A. speed and torque are both reducedB. speed is reduced and torque remains unchangedC. speed is reduced and torque is increasedD. speed is sometimes unchanged while torque is increased20. Which of the following statements concerning fire-tube boilers is correct?A. Combustion gases flow through the tubes.B. Flames impinge on the tubes.C. Water impinges on the tubes.D. Water flows through the tubes.21. The exhaust boilers are used to recover some of _________ carried in the exhaust gas from themain engine.A. waterB. oilC. heatD. steam22. The water level in a steaming auxiliary boiler will always __________.A. rise when the steam pressure is increasedB. remain constant as long as the feed pump operatesC. fall when the steam pressure is decreasedD. vary as the steam demand changes23. When lighting off an auxiliary boiler, which of the problems listed could cause the burners tosputter?A. Cold fuel oilB. Low fuel oil pressureC. Low atomized steam pressureD. Water in the fuel oil24. If the feed pump for and auxiliary boiler fails to deliver the feed water to the boiler, thecause may be _________.A. high steam pressure in the boilerB. abnormally high feed-water temperatureC. abnormally high boiler water temperatureD. steam demand exceeding feed pump capacity25. Through a _________ pump the liquid is transferred from the suction to the discharge by themechanical variation of the volume of a chamber or chambers.A. positive displacementB. ejectorC. centrifugalD. air compressor26. Sealing lines provide sealing liquid flow to the stuffing box of a centrifugal pump.A. to prevent seawater from passing out the stuffing box when a high suction head is presentB. to cool the shaftC. in place of mechanical seatsD. in place of lantern rings27. Which of the valves listed will be cycled from fully open to fully close when the handle isturned 90 degrees?A. A rising stem gate valveB. A globe stop valveC. A check valveD. A butterfly valve28. Centrifugal pumps, used to handle hot liquids, must have a minimum flow through themunder all operating conditions. This flow serves to _________.A. prevent overheating and damage to pump rotating parts due to rubbingB. maintain the net positive suction head of the pumpC. maintain hydraulic differential in the pump impeller passagesD. purge the pump of non-condensable vapors and gases29. If you heard a …cracking‟noise in a centrifugal pump, the most probable cause of theproblem would be __________.A. insufficient speedB. cavitationC. excess discharge pressureD. excessive net positive suction head30. In the process of ________ liquid changes into gas.A. evaporationB. frostingC. condensingD. compressing31. The device used for low-pressure control and high-pressure cutout on a compressor iscalled a _________.A. cutoutB. pressure controllerC. controller switchD. cutout switch32. A purge recovery system is used in a central air conditioning or refrigeration system to_________.A. purge lube oil from the liquid refrigerantB. recover water purged from the systemC. separate foul gases from the receiverD. purge non-condensable gases without losing refrigerant33. In an air conditioning system, low head pressure associated with a reciprocating compressorcan be the result of ________.A. broken valve springsB. tight drive beltsC. high line voltageD. air in the system34. When discharging bilge water over board, which criteria must be observed?A. The requirement for the oil content of bilge water discharged is under 15 ppm.B. No discharge in sensitive watersC. Any discharge in sensitive watersD. International, national or local requirements have to be observed35. The following measures can be used to improve oily water separator‟s separating effectexcept _________.A. overhauling every two yearsB. working at intervalsC. renewing filtration materialD. properly heating36. Disposal of all kinds of garbage but __________ listed as below is prohibited within SpecialAreas.A. comminuted or ground papers, rags, glass, metal, etcB. plasticsC. food waste comminuted or groundD. incinerator ash37. When does auxiliary burner of incinerator put into operation?I. start incinerator when it is coldII. Little waste oil for dealing withIII. plenty of waste oil for dealing withIV. The water and impurity in sludge are too muchV. the temperature in incinerator is lowVI. dealing with little solid rubbishA. II+III+VB. I+II+III+IVC. I+IV+V+VID. I+II+III+VI38. Bacteria which live _________ are said to be aerobic.A. in the presence of oxygenB. without oxygenC. in the presence of nutritionD. without nutrition39. When centrifuging heavy fuel oil, an important factor to consider is (are) the _________.I. flow rate II. Viscosity of the fuel oilA. IB. IIC. I+IID. Neither I nor II are correct40. To ensure lube oil purifier working in normal condition, the interval between two sludgedischarging should not exceed ________ hours.A. 2B. 4C. 5D. 641. _________ can not cause oil flow from water outlet of self cleaning purifier.A. Oil temperature too highB. Diameter of gravity disc too largeC. Oil temperature too lowD. High level tank out of water42. In the production of freshwater from seawater through a process of heating and cooling, thecooling phase of production is usually called _________.A. evaporationB. distillationC. dehydrationD. condensation43. Distilled water from an evaporator may be discharge into a potable water tank ___________.A. through a detachable hose connectionB. after passing through an activated charcoal filterC. after chemical analysis shows it is fit for consumptionD. through a solenoid operated three-way valve44. What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve45. Cargo handling unit is rated according to the _________ to be lifted.A. cargo craneB. jibC. safe working loadD. oil pressure46. The crane is usually mounted on a platform to offer adequate _______ to the operator.A. sightB. widthC. lengthD. visibility47. Proper internal lubrication of a hydraulic anchor windlass left idle for extended periods canbe accomplished by _________.A. performing a check run on the unit at regular intervalsB. testing the hydraulic fluid for proper PHC. checking the reservoir for proper levelD. cleaning strainers at regular intervals48. __________ are used for hauling in or letting out the wires which fasten the ship to the shore.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches49. The major source of chemical contaminants in hydraulic fluid is _________.A. microscopic steel shavingsB. abrasive wasteC. anti-oxidant compoundsD. oxidation by-products50. If you install a new hydraulic hose in a hydraulic system, the hose must be long enough toallow for contraction to prevent ________.A. failure of the hydraulic hoseB. excessive flow through the lineB. friction in other areas of the hydraulic system D. overheating of the hydraulic fluid51. A circuit that has one wire in contact with the hull of the ship is a __________.A. series circuitB. grounded circuitC. short circuitD. closed circuit52. The frequency of an alternator at a given r/min is determined by the __________.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage53. The operation of paralleling two alternators requires the voltages to be _________ and also inphase.A. zeroB. eliminatedC. differentD. equal54. The frequency of an AC generator is controlled by the _________.A. rheostatB. governorC. exciterD. capacitor55. A motor enclosure which protects against falling liquids is classified as __________.A. water-proofB. drip-proofC. spray-tightD. spray-proof56. ________ are supplied with electricity by main switchboard directly.A. Suez Canal searchlight, air compressor and air conditioning compressorB. Air compressor, boiler blower and refrigeration plantC. Boiler blower, Suez Canal searchlight and refrigeration plantD. Suez Canal searchlight and boiler blower57. _________ is not installed on the emergency switchboard.A. AmmeterB. V oltmeterC. WattmeterD. Synchroscope58. When two D.C. generators operate in parallel, they are protected against motorizing by_______.A. blow out coilsB. governor relayC. under voltage tripsD. reverse current trips59. Moisture in a D.C. motor would cause _________.A. short circuitB. speed upC. slow downD. hunting60. The part of a fuse that melts and opens the circuit is made of _________.A. copper and antimonyB. steel and babbitC. aluminum or beryllium alloyD. zinc or an alloy of tin and lead61. The main purpose of an electric space heater installed in a large A.C. generator is to________.A. prevent the windings from becoming brittleB. prevent moisture from condensing in the windings during shutdownC. prevent acidic pitting of the slip ringsD. keep the lube oil warm for quick starting62. Sparking at the brushes of a running motor could be an indication of _________.A. normal operationB. a dirty commutatorC. increased brush capacityD. water vapor absorption63. Prior to starting, the purpose of turning over a main propulsion diesel engine with thecylinder test cocks open, is to ________.A. test the starting systemB. remove condensation from the cylindersC. check the compressionD. check for proper lube oil pressure64. During the watch keeping at sea, _________ should be logged or recorded in the engine logbook.A. the running hours of the cooling water pumpB. chief engineer‟s orderC. the main parameters of main and auxiliary equipmentD. the position of the vessel65. During ship maneuvering, when the diesel is stopped, which of the following items is wrong?A. keep all systems running normallyB. main engine is available at any momentC. shut off the starting air bottle outlet valveD. pay attention to the changes of the system parameters66. Which of the listed conditions can be considered as the single greatest cause of accidents?A. SpeedB. Excessive knowledge or skillC. Human errorD. Excitement67. On a tank vessel, which of the following substances would be burning in a class “B” fire?A. OilB. WoodC. RagsD. Electric wiring68. The most likely place for a fire to start through the process of spontaneous combustion is in_________.A. an electrical switchboardB. the pressure tanksC. the fuel oil tanksD. the oily rag bin69. Which of the fire extinguishers listed is to be weighed annually and sent ashore for rechargingif the weight loss exceeds 10% of the weight of a full charge?A. FoamB. Soda acidC. Dry chemicalD. Carbon dioxide70. While on watch in the engine room, you hear a continuous sounding of the general alarm.Which of the following actions should you take first?A. Secure the burners then proceed to your assigned board station.B. Start the fire pump and establish flow to the fire main.C. Open the guardian valve and standby to maneover.D. Open the master control valves on the fixed CO2 system.71. If there were a fire in the bunker tanks, you should _________.A. close the ventB. pump out the tankC. activate the fixed CO2 systemD. cut off the heating coils72. To avoid excessive surge pressure when bunkering, you should _________.A. bunker at a normal rateB. check for kinks in hoseC. close valves slowlyD. shut valves before topping off73. ________, where minor repairs are carried out with a ship in service, often during a stay inport. This may be remote from a ship repair site.A. V oyage repairB. Routine dockingC. Daage repairsD. Conversion74. When is the dock survey carried out?A. During annual repairB. Usually during dock repairC. Before sea trialD. After 5 years from last annual survey75. In the initial survey, ________ complies the survey report and fills in certificate.A. surveyorB. chief engineerC. administratorD. company superintendent76. If an incorrect entry were made in the Oil Record Book, you should _________.A. erase the entry and rewrite itB. notify the ship‟s officer-in-chargeC. rewrite itD. draw a single line through the wrong entry and initial it.77. The International Oil Pollution Prevention Certificate is valid for a period of __________.A. one year from the date of issueB. five years from the date of issueC. three years from the date of issueD. four years from the date of issue78. Which one is NOT the …clear grounds‟ for a more detailed inspection?A. no operation procedures for the oil separatorsB. engine log book missingC. the master and the chief engineer are unable to communicate effectivelyD. absence of an up-date muster list79. The Port State Control officer may witness a fire drill carried out by the crew assigned to theseduties on the ________.A. Navigation Log BookB. Engine Room Log BookC. Oil Record BookD. Muster List80.81. The main purpose of Port State Control is not to _________.A. prevent an unsafe ship proceeding to seaB. prevent a ship threatening the main environmentC. fine the shipsD. confirm a safe sailing82. The bridge should inform the engine room _________ before passing through congested orshallow waterway.A. 24 hoursB. 2 hoursC. 1 hourD. 15 hours83. When the chief engineer is in the machinery spaces, the officer in charge of the engineeringwatch shall ________.A. continue to be responsible for machinery space operations despite the presence of the C/EB. hand over the responsibility to the chief engineer activelyC. be responsible for the watching together with the chief engineerD. assist the chief engineer to control the machinery84. According to the international regulations concerning the prevention of pollution of sea areasfrom ships, the disposal into the sea of all plastics is _________.A. welcomeB. admitted in some special sea areasC. prohibitedD. acceptable85. The ship emergency plan item does not include __________ usually. I. lifesaving, firefighting II. first aid III. abandon ship86. Under ISM Code, the ship to which it applies has to carry _________.A. an International Ship Security CertificateB. an International Oil Pollution Prevention CertificateC. a Safety Management CertificateD. an International Ballast Water Management Certificate87. The objective of ISPS Code is __________.A. to protect the marine environmentB. to provide a method to avoid an accidentC. to protect the ship from collisionD. to keep terrorism action away from ships88. According to “MARITIME LABOUR CONVENTION, 2006”, the maximum hours of workshall not exceed __________.A. 14 hours in any 24-hour periodB. 72 hours in any seven-day periodC. 10 hours in any 24-hour periodD. 88 hours in any seven-day period二．关联题（关联题干下有4个小题，每小题4个选项）第一组Port State Control (PSC) is the inspection of foreign ships in national ports for the purpose of verifying that the condition of the ship and its equipment comply with the requirements of international conventions that the ship is manned and operated in compliance with applicable international laws.The primary responsibility for ensuring that a ship maintains a standard at least equivalent to that specified in international conventions rests with the flag State and if all flag states performed their duties satisfactorily there would be no need for port state control. Unfortunately this is not the case as evidenced by the many marine accidents around the world-hence the need for additional control.The authority for exercising PSC is the national law based on relevant conventions. It is therefore necessary for a port State to be Party to those conventions and to have promulgated the necessary legislation before exercising PSC. In accordance with the provisions of the applicable conventions, Parties may conduct inspections of foreign ships in their ports. They are Port State Control Officers (PSCO).89. The purpose of PSC is _________.1) to check and inspect foreign ships2) to verify the condition of a ship in compliance with requirements of internationalconventions.3) to make sure that the ship is manned and operated well4) to detain shipsA. 1) +2)B. 2)+3)C. 1)+3)D. 1)+2)+3)+4)90. Who will be responsible for ensuring that a ship maintains a standard at least equivalent to thatspecified in international conventions?A. PSCOsB. Ship ownersC. Flag statesD. Port states91. Before exercising PSC, a port state should __________.A. become a contracting Party and promulgate regulations for implementing PSCB. inform ship ownersC. establish proceduresD. inform shipping companies92. PSC inspection is implemented by ________through _________.A. flag states/ PSCOsB. flag states/ ship ownersC. port states/ PSCOsD. port states/ ship owners第二组Almost all failures in the fuel oil system, including the compression being to low, result in the crankshaft rotating more slowly if there is a failure at one or more cylinders simultaneously. If only one or two cylinders fail, and the engine is not fully loaded, the crankshaft rev./min. does not decrease, the reason being that the governor ensures that the remaining cylinders are loaded to a correspondingly greater extent. If the engine is already fully loaded, the cylinders that are working normally become overloaded causing a smoking exhaust and higher exhaust temperatures etc. The load must always be reduced until the failure has been located and rectified. The reasons for a cylinder suddenly working at reduced load, or failing completely, may be:1. a defective or blocked fuel injection valve.2.the fuel oil pump piston seizing in the barrel. This failure can be ascertained by trying to movethe pump‟s toothed rack. Defective fuel pumps must be changed.3.the compression being to low because of sticking, worn or broken piston rings.4.leaking inlet or exhaust valves.5.no clearance in the valve operation gear.The reasons for the crankshaft rotating more slowly, or stopping completely, can also be:1.the fuel oil filter being blocked. This failure is identified by decreasing oil pressure after thefuel oil filter.2.valve sticking in the open position.3.leaking fuel oil pipes or joints.4.water in the fuel oil.5.the regulating mechanism being jammed.6.the governor not functioning correctly.7.the electrical shutdown valve (the monitoring system) being activated.93. This passage is mainly about ________.A. the failure of reduced rpm.B. the failure of the governorC. how to ensure the constant rotational speedD. the reasons for the fuel system to shut down94. If one or two cylinders fail in fuel oil system the crankshaft rev/min __________.1) will invariably decrease 2) does not decrease 3) will decrease under certaincircumstancesA. 1)B. 2)C. 3)D. None of 1),2),3) is true95. Which of the following is NOT mentioned as the reason for a cylinder suddenly working atreduced load?A. fuel valve failureB. failure of fuel pump discharge valvesC. too large gaps of piston ringsD. the fuel oil filter being blocked completely96. Which of the following is NOT mentioned as the reason for the crankshaft rotating moreslowly or stopping?A changing from heavy oil to light diesel oilB. connections leakingC. there being too much waterD. malfunction of the governor。
《轮机英语》试题（二三管轮）含答案
《轮机英语》试题（二三管轮）含答案《轮机英语》考试复习题(二、三管轮)第一章船舶动力装置1.“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?”asked the oil barge owner.A． by using of fresh waterB．with compressed air √C． by using of sea waterD． with chemical compound2.“Stand by an engine” means _____.A．“prepare to stop the engine”B．“assemble an engine on its bedplate”C．“make an engine ready for starting”√D．“dismantle an engine”3. A _____ is the foundation of the engine, without the support of which the shaft alignmentin particular, and engine structure as a whole, would inevitably be lost.A． FrameB．Bedplate √C． CylinderD． Liner4._____ are commonly used in mechanical-hydraulic governor to sense engine speeds.A． BulbsB． BulksC．Flyweights √D． Flywheels5._____ are generally formed in the frame of the both in-line and Vee engines to givemaintenance access to the crankshaft main and connecting rod large end bearing.A．Doors √B． Aspirate gauzerC． CouplingD． Blind6._____ device is provided to prevent starting air from being admitted to the cylinderbefore the reversing is completed.A．An automatic √B． A transmissionC． A self-regulatingD． An interlocking7._____ fuel oils _____ lubricating oils require treatment before passing to the engine.A．Both/and √B． Neither/norD． Both/or8._____ is sometimes used for piston cooling since leaks into the crankcase would not causeproblems.A． Diesel oilB． Hydraulic oilC．Lube oil √D． Mineral oil9._____ is the removal of exhaust gases by blowing in fresh air.A． Gas exchangeB． ChargingC．Scavenging √D． Supercharging10._____ is used for cylinder and cylinder head, the salt water is used for cooling thelubricating oil, the fresh water in the coolers and the charging air in the air cooler.A． The fuel oilB． The lube oilC． The sea waterD．The fresh water √11._____ may be the first possible cause which makes the engine to lose power or slow downwhen it is running.A．Hot bearing √B． Starting valvesC． Unequal distribution of loadD． Excessive crankshaft clearance12._____ of an engine crankshaft can be detected by measuring deflections of crank websfor each unit of the engine.A．Misalignment √B． LengthC． StrengthD． Stresses13._____ of the A-frames there is a strong cast iron frame called the scavenging air box.A．At the top √B． At the bottomC． In the topD． In the bottom14._____ pistons have low inertia and high coefficient of thermal expansion.A． Cast ironB． Cast steelD．Aluminum √15._____ should not undertake any task which will interfere with the supervision dutiesrelating to the main machinery and associated equipment.A．The watch keeping personnel √B． The chief engineerC． The person on a bunker bargeD． Any of the above16._____ the cylinder will contain a great weight of air and will be capable of burninga great quantity of fuel.A．At the beginning of the compression stroke √B． At the beginning of the suction strokeC． At the end of the working strokeD． At the end of the exhaust stroke17._____ the supercharge pressure is, _____ power an engine develops.A．The higher/the more √B． Higher/moreC． Higher/littleD． The higher/the less18._____ is not properly set thus causing either advanced or retarded firing.A． A pistonB．A fuel injection pump √C． A feed water pumpD． A lube oil pump19._____ rods are not in proper condition so that too much fuel is supplied to thecorresponding cylinder.A． PistonB． SoundingC．Regulating √D． Connecting20._____ shows 1.2 meter and the specific gravity of the oil is 0.96According to the measuringscale, that makes 150 tons.A． The piston rodB． The push rodC．The sounding rod √D． The connecting rod21._____ allows for expansion and water make up in the water cooling system.A． A top tankB．A head tank √D． A drain tank22._____ at the end of the distribution pipe ensures that adequate pressure is maintainedby the pump.A． A relief valveB．An alarm √C． A pressure gaugeD． A non-maim valve23._____ is used for washing and drinking.A． The ballast systemB． The salt water systemC． The bilge systemD．The domestic system √24._____ provide the water to the pistons.A． Pneumatic pipesB． Hydraulic pipesC．Telescopic pipes √D． Operating gas pipes25._____ are fitted in the exhaust system and facilitate charge removal and scavenging ineach cylinder.A．Diffusers √B． CompressorsC． Steam boilersD． Soot blowers26._____ are formed by abrasive particles entering the bearing and scoring the shaft.A．Grooves √B． RecessesC． RidgesD． Nips27._____ are mounted on and bolted to the bed-plate cross girders.A． The crankshaftB． The crankcaseC． The guide-waysD．The frames √28._____ is a precaution which contributes to avoiding trouble under normal operatingconditions.A．Constant inspection √B． Keeping constant loadC． Remaining constant temperatureD． varying speed29._____ is a source of power by which the diesel engine may operate.A． Water energyB． Electrical energyC． Chemical energyD．Heat energy √30._____ is arranged for cleaning the lubricating oil in the system and clean oil can beprovided from a storage tank.A． A filterB．A centrifuge √C． A distillerD． A generator31._____ is fully floating in both connecting rod small end and the piston skirt.A． The piston rodB． The cross head pinC．The gudgeon pin √D． The crank-pin32._____ is made of a boss with separated blades mounted into it.A．A variable pitch propeller √B． A variable pitch nutC． A fixed pitch parallelD． A fixed pitch screw33._____ is usually driven by the engine camshaft andsupplies pilot air to the cylinderair start valve.A． An air receiverB． An operating valveC． An automatic valveD．An air distributor √34._____ neutralizes the acid conditions and_____ cleanses the rings and grooves.A． The detergency/the alkalinityB．The alkalinity/the detergency √C． The inhabitant/the waterD． The additives/the distilled water35._____ or air venting arrangement is fitted to the fuel supply passage.A． An air pumpB． A compressorC． A fuel pumpD．A priming √36._____ providing lubricating films, oil used in marine diesel engines have to remove heatfrom oil cooled piston.A． Except forB． BesideC． ExceptD． In additi on to √37._____ the engines, the diesel engine is_____ used engine on board.A． Between/more commonlyB．Among/the most commonly √C． Between/not more commonlyD． Among/not the most commonly38._____ water is more expensive than fresh waterIt has high specific heat and low viscosity.A．Distilled √B． DistillingC． BoilingD． Boiled39._____ for the camshaft gear train is taken from a spur gear which for a six cylinderengine is at the coupling end.A． The driven gearB．The drive √C． The greaseD． The lubricating oil40._____ in what position the engine stops there will always be at least one of the cylinderswith its starting air valve open to admit compressed air to start the engine.A． BecauseB． Owing toC． ForD．No matter √41._____ is secured by means of side-chock bolts and end-chock bolts.A．The bedplate √B． The columnC． The main bearingD． The double bottom42._____ usually helps to induce air movement to assist combustion.A． Cylinder coverB． Main bearingC． The exhaust valveD． The p iston movement √43._____ may have two emergency source of power, thus requiring two emergency switchboards.A．Large passenger vessels √B． General cargo shipsC． Container shipsD． Oil tankers44._____ supplies pilot air to control the cylinder air start valves.A． An air compressorB． An indicator cockC．An air distributor √D． A safety valve45._____ clearances in the main or crank pin bearings will sometimes be indicated by lossof pressure in the lubricating system before any bearing knock is heard.A． T oo largerB． Too smallerC． ExcessD．Excessive √46.A cast steel strong back is fitted in way of the combustion space to help absorb _____.A． flame temperatureB． fuel oilC． air movementD．gas forces √47.A charge of fresh air is drawn into the engine cylinder and then _____ by the movingpiston_____ very high pressure.A． pressed/toB． pressurized/withC． pushed/inD．compressed/to √48.A common trouble with the fuel pump plunger or fuel valve spindle is _____.A． water leakageB． steam leakageC．oil leakage √D． air leakage49.A common trouble with the fuel pump plungers or fuel valve spindle is _____.A． broken downB． stuckC．oil leakage √D． carbonized50.A diesel engine is similar to a gasoline engine except that the former has no _____.A． cross-headB． cylinderC． connecting rodD．spark plug √51.A diesel engines crankcase oil level is found to be too highYou should suspect that _____.A． the engine was over filledB． there might be a fuel leakC． there might be a water leakD． all of the above √52.A distance piece, known as a _____ may be interposed between the rod and the bearinghousing.A． bearing shellB． bearing linerC．compression plate √D． lead wire53.A distance piece, with ground faces, known as a compression plate, may be interposedbetween the rod and the beating housing, its thickness being chosen to ensure the correct _____.A． compression pressureB． compression testC．compression ratio √D． compression clearance54.A distance piece, with ground faces, may be interposed between the rod and the bearinghousing, its thickness being chosen to ensure the correct _____.A． expansion ratioB． pressure ratioC．compression ratio √D． clearance ratio55.A governor automatically controls engine speed by regulating _____.A． fuel s upply √B． firing orderC． engine loadD． oil level56.A gudgeon pin in a trunk piston may be free to float and rotate, with _____ to limitaxial movement.A． split pinsB． crankpinsC． dipsticksD．circlips √57.A heater in the circuit facilitates warning of the engine prior to ____ by circulatinghot water.A．starting √B． stoppingC． to startD． to stop58.A high temperature alarm or _____ which will melt is used to guard against the explosionof compressor air pipelines.A． a flame trapB． a relief valveC．a fusible plug √D． a bursting cap59.A hot air start pipe indicates that there is _____.A． inefficient coolingB．a leaking air start valve √C． a clogged drain valveD． a leaking air bottle60.A level gauge for a tank is to _____.A． give the pressureB．give the contents √C． give the shape of the tankD． give the accuracy level61.A lubricant often has to perform many duties in any situation, in addition to itsfundamental job of_____.A． resisting oxidizationB．reducing friction √C． promoting moving speedD． developing inertia62.A main bearing consists of two shells which are secured by means of studs and _____.A． tie rodsB． through boltsC． lead wiresD．bearing caps √63.A number of cylinder liners are enclosed in one cast iron casing to form a _____.A． cylinder coverB．cylinder block √C． cylinder frameD． bed-plate64.A reduction in load on a diesel engine results in _____ of speed of the crankshaft.A． a reductionB．an increase √C． an outingD． a downwards65.A separate piston cooling system is used _____ any contamination from piston coolingglands to the piston cooling system only.A． to helpB．to limit √C． to protectD． to remove66.A separate piston cooling system is used to limit any contamination _____ piston coolingglands_____ the piston cooling system only.A． between, toB． either, orC．from, to √D． neither, nor67.A single piece_____ fitted with bronze rings guides the piston in the cylinder liner.A．piston skirt √B． piston crownC． guide wayD． cross-head68.A variable pitch propeller is made _____ a boss with separate blades mounted into it.A． ofB．up of √C． fromD． out69.A: Please tell me the specifications and quantityB: _____.A． Pump diesel oil firstB．300 tons of 180 cst fuel oil √C． The figure is all rightD．OK, I’ll sign it70.About half an hour before the engine is required, cooling water at _____ must be circulated.A． more than the working temperatureB． less than the working temperatureC．the working temperature √D． the same as the surrounding temperature71.According to the way the energy of the exhaust gases is utilized, pressure-charging canbe divided into two main systems, namely, the constant-pressure system and _____.A． the pulse-phase systemB． the pulse Doppler systemC．the pulse system √D． the pulse interval72.Acid solution in the system can be tested from time to time by putting some on to a pieceof lime.A．strength √B． denseC． percentageD． velocity73.Additives _____ protective layers on metal surfaces guarding them against corrosion.A． damageB．form √C． dissolveD． contaminate74.Adjust _____ by means of lead wire.A．the clearance of the main bearing √B． the diameter of main bearingC． the gap of main beatingD． the tolerance of main bearing75.Administrations should bear in mind the significance of_____ in maintaining safety oflife and property at sea and in preventing marine pollution.A． advanced nautical equipmentB． advanced performance main enginesC． emergency equipmentD． communicati on and language skills √76.A-frames and cylinder block is held together by _____ to form a rigid structure.A． connecting rodsB． piston rodsC．tie rods √D． jack-bolts77.A-frames are mounted on the bed plate and support _____ and cylinder block.A． the main bearingB． the cylinder coverC．the entablature √D． the sump78.After "F.W.E." is given, the air system is shut down, the _____ gear put in, all drainsand indicator cocks opened, and the cooling water kept running.A． steeringB． timingC．turning √D． running79.After ensuring that the _____ is correct the bearing clearance should be checked.A． napB． gapC．nip √D． deflection80.After fitting back in place the gear wheels, dont forget _____ them.A．to grease √B． greasingC． oilingD． lubricating81.After passing through the turbine the exhaust gas is conducted out into the _____.A． intercoolerB． compressorC． cylinderD．open air √82.After the engine is warned, we should_____ the turning gear before starting up the engine.A． take inB． put inC．take out √D． put up83.After the order “_____” is given, the air system is shut down, the turning gear putin.A．Finished with Engine √B． Stop the EngineC． Stand-by EngineD． Slow-down Engine84.Air cocks, usually positioned at the _____ in a circulating system, is used to get ridof the air in the system.A． bending jointB． expansion tankC． weldD．the highest point √85.All the rings are slightly rounded on their external top and bottom edges to keep theoil film on the cylinder liner during _____ for new piston rings.A． the running-in period √B． the running processC． gas exchange processD． the boiler firing86.All three systems have the ports _____ to swirl the incoming air and direct it in theappropriate path.A． angledB． roundedC． being angledD．being rounded √87.Although the crankshafts of medium diesel engines appear to be robust, they rely on thesupport of _____ to develop their full strength.A． the piston rodsB． the crank throwsC． the thrust bearingsD． the main bear ings √88.Aluminum pistons have _____ coefficient of thermal expansion compared with those of castiron.A．higher √B． lowerC． the sameD． none of the above89.Among the rings of a piston the _____ one is subjected to the greatest load and temperature.A． bottomB． middleC．top √D． none of the above90.An aluminum piston has lower inertia and higher coefficient of _____ compared to thatof cast iron.A． viscosityB． twisting momentsC． inertiaD．thermal expansion √91.An electrically driven automatically operating auxiliary blower is provided for slowspeed and _____ of a low speed diesel engine.A．manoeuvring operations √B． bad combustionC． coolingD． mooring trial92.An increase in load on a diesel engine results in _____ of speed of the crankshaft.A．a reduction √B． an increaseC． an outingD． a downwards93.An interlock in the remote operating valve line stops the valve _____ when the engineturning gear is engaged.A． to openB．opening √C． openD． opened94.An overspeed safety device is usually fitted to a generator engine for _____ in the eventof overspeed.A．cutting power off the engine √B． increasing the fuel pump settingC． braking the crankshaftD． stabilizing the ship speed95.As a heat engine, _____ energy is the source of power by which the diesel engine canbe operated.A． electricB．heat √C． mechanicalD． exhaust96.As for a diesel engine, lack of combustion air may be due to _____.A．fouling turbine √B． fuel pump faultsC． lubrication failureD． excessive cooling97.As the plunger moves up, the ports are closed and the fuel _____ and delivered to theinjector nozzle at very high pressure.A． being compressedB． to be pumped upC．is pressurized √D． are built up98.At least _____ cylinders in four-stroke engine will be configured to ensure that theengine can be started with the crankshaft at whatever position.A．6 √B． 2C． 12D． 899.At the top of the A-frames there is a strong cast iron frame called _____.A． cylinder linerB． cylinder coverC． the gear boxD． the sc avenging box √100.Be sure to make the engine turn by _____ before starting and after stopping.A． steering gearB．turning gear √C． steering wheelD． turning cycle101.Bearing knocks are likely to occur from _____.A． less clearanceB． dirty lube oilC． overloadD．bearing wear √102.Because the castings of smaller engines are not so big and heavy, _____ and cylinder block may be made in one piece.A．the column √B． the jacketC． cylinder coverD． cylinder liner103.Bedplates are the _____ of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.A． hullB． projectionC． graphitizationD．foundation √104.Before "stand-by" is rung on the engine telegraph, it is usual to give the main engine _____ ahead and astern.A． a brief trial with turning gearB．a brief trial on power √C． a long trial by steering gearD． one minutes trial with windlass105.Before a marine diesel engine is started the cylinders and pistons must be _____.A． cooled to appropriate temperatureB．warmed up gradually to appropriate temperature √C． opened up and renewedD． ground and polished106.Before being used the fuel service tank should be drained of _____.A． soda solutionB． mechanical impuritiesC． ballastD．water and residuals √107.Before pumping up the crankcase oil, _____ should be worked by hand to minimize corrosive action on the liners.B． the starting valvesC．the cylinder lubricators √D． the turning gear108.Before replacing a piston you should check that all rings are _____.A．free √B． fastenedC． brokenD． stuck109.Before replacing a piston you should check the rings to see that all clearances and gaps are _____ the permissible tolerances.A． aboveB． atC． overD．within √110.Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible _____.A． deflectionB． discrepancyC． errorD．tolerance √111.Before starting the engine the air bottle should be _____.A．pumped up √B． loadedC． dischargedD． opened112.Before starting the turning gear, _____ should be worked by hand to minimize corrosive action on the liners.B． the starting valvesC．the cylinder lubricators √D． the turning gear113.Blow-off of the relief valves of the engines cylinders may be caused by _____.A． too low leadB． water in fuelC． too tight springD．leakage √114.Blow-off of the relief valves of the main cylinders during operation indicates _____.A． the cylinder cover is crackedB． the injector holes is cloggedC．the cams are not properly set √D． fuel pump is leaking115.Bridge gauge can be used to measure _____ of a diesel engine.A．diameters of journals √B． deflections of crankwebsC． diameters of crankpinsD． none of the above116.Care and cleanliness are required when installing diesel fuel filters _____.A． to prevent the fuel system from becoming air-houndB． to prevent the fuel system becoming clogged with dirty particlesC． both of the abo ve √D．to prevent the lubricating oil from leaking out of the filter element117.Cast iron carrier rings, _____ machined grooves, are provided for all the pistons.A．caulked into √B． caulking intoC． pressed intoD． screwed into118.Charging is the filling of the engine cylinder with a supply of _____ for compression.A． waterB．fresh air √C． fuel oilD． gas119.Charging is the filling of the engine cylinder with a supply or charge of fresh air _____ compression.A． to needB．ready for √C． want toD． going to be120.Charging-air pressure increases if there is incorrect combustion and drop in the _____ of the diesel engine.A． machine efficiencyB． machinery efficiencyC．mechanical efficiency √D． mechanics efficiency/doc/5c7732040.html,pressed air is supplied by air compression to _____.A．the air receivers √B． the starting valvesC． the cylinder coversD． the distributors/doc/5c7732040.html,pressed air is used on board ship _____.A． for starting diesel enginesB． in pneumatic control systemC． in pneumatic toolsD．All the above are true √123.Constant cooling the various components of diesel engine has a number of functions except for _____.A． good lubricationB． low thermal stressC． good mechanical propertiesD．acid corrosion √124.Cooling enables the engine metals _____ their mechanical properties.A．to retain √B． to remainC． to maintenanceD． to have125.Cooling of engine is achieved by circulation a cooling liquid around internal passages within the _____.A． boilerB． heaterC．engine √D． cooler126.Cooling of engines is achieved by _____ a cooling liquid around internal passages within the engine.A． flowedB． flowingC． mixingD．circulating √127.Cooling of engines is achieved by circulating a cooling liquid around internal _____ within the engine.A． air。
轮机英语真题44期,甲类三管轮
轮机英语统考试题(总第44期)1.The diesel engine is similar to the gasoline engine in that _______.A.Both of them are ignited by compressed airB. Both of them are the forms of external combustion enginesC. Both of them have spark plugsD. The power is developed by the piston in the cylinder2.The ratio of th brake horsepower to the indicated by the ______.A.Thermal efficiencyB. Mechanical efficiencyC. Brake thermal efficiencyD. V olumetric efficiency3.The ignition quality, of diesel fuel oil is indicated by the ______.A.Specific gravityB. Cetane numberC. V iscosityD. Calorific value4.How are the pressure and temperature affected in a diesel engine cylinder during compression?A.Pressure and temperature decreaseB.Pressure and temperature increaseC.Pressure decreases and temperature increasesD.Pressure increases and temperature decreases5.An aluminium piston has lower inertia and higher coefficient of ____compared to that of cast ironA.ViscosityB. Twisting momentsC. InertiaD. Thermal expansion6.Each cylinder is closed at the top by a _____,made of a special heat-resistant steel.A.Cylinder linerB. Coupling flangeC. Cylinder coverD. Piston7.The amount of fuel delivered by a helical plunger type fuel injection pump is controlled by_______.A.Rotation of the pump plungerB. Rotation of the pump barrelC. V arying the pump supply pressureD. V arying the pump return pressure8.In a diesel engine lube oil system, which of the following parts should be lubricated first?A.Camshaft bearingB. Main bearingC. Piston crownsD. Cylinder9.Sacrificial zinc anodes are used on he saltwater side of diesel engine heat exchangers to______.A.Reduce electrolytic action on heat exchanger metalsB. Keep heat transfer surfaces shiny and cleanC. Prevent rapid accumulation of marine growthD. Provide a protective coating on heat exchanger surfaces10.In a turbocharger, inlet air veloc ity is in creased in the _____.A.Inlet nozzle ringB. Stationary diffuser passagesC. Compressor outlet voluteD. Rotating impeller vanes11.Diesel engine cylinder air start valve timing is controlled by ______.A.Engine operating speedB. An air manifoldC. A hydraulic distributorD. The air distributor12.If the compensating needle valve of a hydraulic governor is opened more thannecessary the governor will_______.A.Have a larger than normal dead bandB.Produce excessive speed response to a load changeC.Respond slowly to any change in engine loadD.Stabilize engine speed at the new governor setting13.A pyrometer is an instrument commonly used to measure_____.A.Cylinder pressureB. Flame intensityC. Exhaust gas temperatureD. Crankshaft axial alignment14.pump up the starting air reservoirs to their maximum pressure and _____the airreservoirs and airA.OpenB. closeC. DrainD. V ent15.In reducing engine speed to an efficient propeller speed by the use of reductiongears,______.A. Speed and torque are both reducedB. Speed is reduced and torque remains unchangedC. Speed is reduced and torque is increasedD. Speed is sometimes unchanged while torque is increased16.Which of the following statements concerning fire-tube boilers is correct?bustion gases flow through the tubesB. Flames impinge(撞击) on the tubeC. Combustion occurs in the tubesD. Water flows through the tubes17.The safety valves should be tested and adjusted when the boiler survey is _____.pletedB. Carried outC. CleanedD. Steamed18.When an auxiliary boiler is panting and emitting black smoke, you should ______.A.Increase the fuel oil supply pressureB. Decrease the fuel oilC. Decrease the fuel oil supply pressureD. Increase the air supply19.If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, thecause may be ______.A.High steam pressure in the boilerB. Abnormally high feed-water temperatureC. Abnormally high boiler water temperatureD. Steam demand exceeding feed pump capacity20.A vane pump belongs to______according to its working principle.A.Reciprocating pumpB. Positive displacement pumpC. Centrifugal pumpD. centripetal pump21.The packing installed in the pump stuffing box is lubricated by_______.A.Gravity and feed oil cupsB. Grease cupsC. Hand during installationD. Leakage through the stuffing box22.If the capacity of a centrifugal pump decreases gradually over a long period of time,you should______.A.Packing glandB. Mechanical sealsC. Lantern ringsD. Wearing rings123.Which of the listed conditions can lead to cavitation in a centrifugal pump?A.V apor pockets formed in the suction flow steamB. Rough casing volute surfaces.C. Worn wearing ringsD. Heavy fluid m the flow stream24.In a compression refrigeration plant, the hot, high pressure refrigerant gas is cooled by the sea water and becomes liquid in the _____.pressorB. CondenserC. Throttle valveD. Evaproator25.The temperature at winch water vapor in the atmosphere begins to condense is called the ________.A.Dew point temperatureB. Condensation temperatureC. Psychometric temperatureD. Absolute humidity temperature26.In an air conditioning system, moisture is removed from the air by_____.A.FiltersB. SeparatorC. Ducted trapsD. Dehumidifiers27.Sludge may form in the crankcase of an air conditioning compressor as a result of ______.A.Bubbling refrigerantB. Lowered operating temperaturesC. Overheating and oxidationD. Reducing the cloud or floe point28.Coalescence is the breakdown of surface tension between oil droplets in an oil/ water mixture. Which causes them to join and ____in size.A.ExpandB. ExtractC. IncreaseD. Decrease29.when started, a complete oily water separating unit is first filled____.the oily water mixture is _____ then pumped through the inlet pipe into the coarse separating compartment.A.With dirty waterB. With clean waterC. By oily waterD. By mixed water30.Which is the pollution prevention equipment?A.Booster pumpB. EvaporatorC. IncineratorD. Cooler31.The ___is used to bum oil sludgeA.ClarifierB. Oily water separatorC. IncineratorD. Distiller32.In sewage treatment, the term‘maceration’refers to the process of ______.A.Breaking up solid matter into fine particlesB.Precipitating non-decomposed waste in a collection tankC.Chemically adjusting the sewage pH to 7.0D.Eliminating bacterium coil from the sewage33.Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?A.Carbon particlesB. Lube oilC. GasolineD. Diesel fuel34.If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the ______.A.Oil has a tendency to emulsify in the bowlB.purifier will act as a clarifier at the discharge ringC.Oil will be lost through the water discharge portsD.Oil solids will be deposited only at the intermediate top disk35.The process of boiling seawater in order to separate it into freshwater vapor and brineis usually defined as __________.A.DehydrationB. CondensationC. EvaporationD. Dissolution36.What type of valve is used to direct the flow of hydraulic is controlled by varying theposition of the ______A.Relief valveB. Direction control valveC. Stop valveD. Pressure control valve37.The delivery rate of a variable stroke axial piston hydraulic pump is controlled byvarying the position of the _____.A.Slide blockB. Tilting boxC. PintleD. Reaction ring38.The drive motor will have a brake arranged to fail-safe,i.e.it wild ~the load if powerfail or _________machine is stopped.A.LiftB. PutC. TakeD. Hold39.On tank vessels with an electrically-driven capstan, the motor should be meggeredperiodically to test________.A.Insulation resistanceB. Eddy currentsB.C. Capacitance D. Armature reactance40.Overheating of a hydraulic system may be a result of ________.A.Changing pump discharge pressure in response to normal load variationsB. A high oil levelC. Incorrect fluid viscosityD. Continued slow re-circulation of the oil41.Purging air from a hydraulic system is necessary when ______.A.Adding small amounts of oil to the systemB.The system has been overheatedC.The system has been drained and then filled with new oilD.The system has been idle for a long period of time42.A direct current passing through a wire coiled around a soft iron core is the descriptionof a simple________.A.Magnetic shieldB. ElectromagnetC. Piezoelectric deviceD. Electromagnetic domain43.The operation of _____two alternators requires the voltages to be equal and also inphase.A.ParallelingB. Series-mountingC. RunningD. Controlling44.The power factor of an AC generator operating singularly is determined by the__________.A.Connected loadB. Prime mover speedB.C. Field excitation D. Generator's rated voltage45.A generator is prevented from becoming motorized by the used of a/an _____.2A.Over-speed tripB. Reverse power relayB.C. Back pressure trip D. Governor controls46.After a ship enters service it is _____for the main bus-bar to be made dead.uallyB. CommonlyC. ExceptionalD. Unavoidably47.A transformer in an electric circuit serves to______.A. Generate its own electrical powerB. Transform electrical energy into mechanical engergyC. Increase or decrease circuit voltage as requiredD. Convert AC or DC.48.The separate supplies are connected in either star or delta formation. The star formation is most commonly used and requires______slip-rings on the alternator.A.TwoB. ThreeC. FourD. Five49.Most conducting materials such as copper, aluminium, iron,nickel,and tungsten(钨)_____。
2024三管轮理论英语考试真题
2024三管轮理论英语考试真题2024 Three-Tube Wheel Theory English ExamInstructions:This exam is designed to test your understanding of the Three-Tube Wheel Theory, a scientific concept proposed by Dr. John Smith in 2020. Please carefully read the questions and provide detailed answers.Section 1: Multiple Choice (1 mark each)1. According to the Three-Tube Wheel Theory, what is the function of Tube 1?a) Regulating temperatureb) Controlling speedc) Providing stabilityd) Generating power2. Which of the following best describes the relationship between Tube 2 and Tube 3 in the Three-Tube Wheel Theory?a) Tube 2 is dependent on Tube 3b) Tube 3 is dependent on Tube 2c) Tube 2 and Tube 3 are interdependentd) Tube 2 and Tube 3 are unrelated3. In the Three-Tube Wheel Theory, what is the significance of the direction of rotation?a) Determines the efficiency of energy transferb) Indicates the level of frictionc) Controls the speed of the wheeld) Affects the stability of the systemSection 2: Short Answer (2 marks each)4. Explain how Tube 1 contributes to the overall functioning of the Three-Tube Wheel Theory.5. Describe a real-world application of the Three-Tube Wheel Theory and how it can benefit society.6. Discuss the potential limitations or challenges of implementing the Three-Tube Wheel Theory in practical systems.Section 3: Essay (10 marks)7. Dr. John Smith's Three-Tube Wheel Theory has been met with both praise and skepticism since its introduction in 2020. In your opinion, what are the key strengths and weaknesses of thistheory? How do you think it can impact future technologies and advancements in science?Good luck with your exam!。
轮机英语大证考试真题42期
中华人民共和国海事局2007年第1期海船船员适任证书全国统考试题(总第42期)科目：轮机英语试卷代号：805适用对象：无限、近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。
第1题至74题，每题1分，第75题至78题，每题1.5分,第79题至80题, 每题10分。
一、单项选择题1.The ______engine is used for alternators and some times for main propulsionwith a gearbox to provide a propeller of between 90 to 120 rpm.A. four-strokeB. two-strokeC. slow speedD. reversible2.The discharge flow of a reciprocating pump is ______.A. steadyB. in pulsationC. continuousD. large3.The cetane number of a diesel fuel oil indicates its ______.A. viscosityB. acid contentC. heating valueD. ignition quality4.Always ensure that the turning gear is______, even at the quay, the wave fromother ships may turn the propeller and thus the engine.A. disengagedB. engagedC. assembledD. disassembled5.Camshafts are usually driven by timing gears or ______.A. push rodsB. chain drivesC. rocker armsD. flywheels6.The cylinder oil is pumped into the cylinder (via non-return valves) when thepiston rings pass the lubricating orifices, during______.A. the upward strokeB. the downward strokeC. the power strokeD. the suction stroke7.The total starting air capacity required for reversible main engines is to besufficient for a least ______.A. six consecutive(连续的) startsB. eight consecutive startsC. ten consecutive startsD. twelve consecutive starts8. A dirty diesel engine oil filter element can best be detected by ______.A. visual inspection of the elementsB. the pressure drop across the filterC. high lube oil sump temperatureD. decrease in oil viscosity from the filter9.Before a marine diesel engine is started the cylinders and pistons must be ______.A. cooled to appropriate temperatureB. warmed up gradually to appropriate temperatureC. opened up and renewedD. ground and polished10. A controllable pitch propeller on a diesel driven vessel eliminates the need for __.A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears11.The maximum pressure developed by a waste heat boiler is determined by themain engine exhaust ______.A. gas compositionB. gas temperatureC. pressureD. timing12.______continuously extract the crankcase atmosphere, via a pipe system, andmove it past a sensitive and accurate opacity (不透明)measuring track.A. The oil mist detectorsB. The smoke detectorsC. An oily water monitorD. Oil discharge monitoring and controlling system13.The water in a steaming auxiliary boiler should be tested daily for ______.A. dissolved oxygenB. chloridesC. sludgeD. dissolved nitrogen14. A firebox explosion in an automatically fired auxiliary boiler may be the result of_____.A. excessive purging before lighting offB. insufficient trail for ignition periodC. a faulty transformer in the ignition circuitD. insufficient purging after lighting off15. A feed pump for an auxiliary boiler might lose suction if the ______.A. boiler water level is lowB. feed-water is too hotC. boiler steam demand is lowD. feed-water is too cold16.The gear and screw pumps are classified as______.A. variable stroke pumpsB. multistage pumpsC. positive displacement pumpsD. triple-ported pumps17.The pressure of a liquid leaving the pump can be referred to as the ______.A. total headB. discharge headC. net positive suction headD. suction head18.Which of the valves listed will be cycled from fully open to fully closed when thehandle is turned 90 degree?A. A rising stem gate valveB. A globe stop valveC. A check valveD. A butterfly valve19. A pump shaft that is bent or distorted should normally be ______.A. repaired by a suitable welding processB. straightened by applying heat and torsionC. reconditioned by metallizing and machiningD. replaced with a satisfactory spare20. A centrifugal pump may fail to deliver water when first started if the ______.A. water seal pipe is pluggedB. pump is not primedC. seal ring is improperly locatedD. impeller is flooded121.Which of the following conditions must exist for heat to flow from one object toanother?A. The two objects must be in physical contact.B. The two objects must be the same size.C. There must be an existing temperature differential.D. There must be an existing weight differential.22.The dew point of air is reached when the wet bulb temperature is ______.A. twice the dry bulb temperatureB. 10℃ above the dry bulb temperatureC. 5℃ above the dry bulb temperatureD. equal to the dry bulb temperature23.If air at 95 ℃ dry bulb temperature and 50% relative humidity is conditioned to75 ℃ dry bulb temperature and 50% relative humidity, it is an example of _____.A. cooling onlyB. cooling and humidifyingC. cooling and dehumidifyingD. adiabatic(绝热的) cooling24.In order to achieve greater dehumidification(除湿) with an air conditioningsystem, you should ______. I. reduce the cooling coil temperature II. increase the re-heater temperatureA. I onlyB. II onlyC. Both I and IID. Neither I nor II25.Oily water separators are used to ensure that ships don't discharge oil whenpumping out ______.A. ballast waterB. boiler waterC. bilge waterD. sewage water26.When started, a complete oily water separating unit is first filled______. The oilywater mixture is then pumped through the inlet pipe into the coarse separatingcompartment.A. with dirty waterB. with clean waterC. by oily waterD. by mixed water27.Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler28.The oil sludge is burnt in the ______onboard. I’ll show you the ashes.A. boilerB. main engineC. auxiliary engineD. incinerator29.Most marine biological sewage treatment plants consist of all the followingstatements except ______.A. aeration tanksB. settling tanksC. disinfection agentD. anaerobic bacteria (厌氧菌)30.Great care is dedicated to the removal of _____ from the scavenge air.A. gravityB. viscosityC. densityD. humidity31.Dirty oil must be _____ before being used again.A. mixed with clean oilB. purifiedC. heatedD. strained32.When a vacuum boiling evaporator works, the hot jacket water will pass over thetube stack and ___ the sea water passing through the tubes.A. disposeB. dissolveC. heatD. dissipates33.When securing a flash-type evaporator for an extended period of time, youshould ______.A. fill the unit with saltwaterB. fill the unit with descaling compoundC. completely drain the unitD. tightly seal the unit to exclude air34.Among the basic categories of equipment, which of the following are used toallow the hydraulic energy to be controlled?A. hydraulic pumpsB. valvesC. hydraulic cylindersD. hydraulic motors35.Positive displacement, helical gear(斜齿轮) pumps are well suited for pumpingoil because ______.A. stuffing boxes eliminate the leakage problems usually associated with othergear pumpsB. it is not necessary to closely maintain design clearances with this pumpC. they are essentially self-priming and produce a high suction liftD. these pumps are designed with extreme tooth angles36.The oil in a cargo winch gear box should be sampled periodically(周期性地) to______.A. prevent the gear box from leakingB. prevent the oil from becoming inflammable(易燃的)C. make sure it has not become contaminated(污染)D. make sure the motor bearings are lubricated37.If an anchor windlass has been idle for some time, you should ______.A. repack all valve stemsB. lubricate it prior to useC. replace the foundation boltsD. balance the warping heads38. A mooring winch should be equipped with mechanical brakes capable of holding______.A. half the breaking strength of the mooring lineB. the full breaking strength of the mooring lineC. the maximum expected tension(张力) of the mooring lineD. 50% over the working tension of the mooring line39.Hydraulic cranes must be properly warmed-up before being operated because __.A. warm-up allows the hydraulic system to become charged with oilB. warm-up allows the relief valves to be properly testedC. hydraulic strainers operate only during the warm-up periodD. hydraulic fluid must be at the proper viscosity40.The current flowing first in one direction and then in another is called ___current.A. a rushB. an alternatingC. a directD. an exciting41.The frequency of an alternator at a given RPM is determined by the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage242.While paralleling two AC generators using synchronizing(同步的) lamps only,both lamps will go dark when the generators are ______.A. running at the same speedB. groundedC. of the same polarity(极性)D. in phase43.The load sharing characteristics of two diesel generators operating in parallel aremostly dependent on their governor ______.A. load limit settingsB. idle speed settingsC. speed limit settingsD. speed droop settings44.Electric insulation is made of organic substances and so gradually _____with age.A. deterioratesB. increasesC. are fouledD. becomes better45.The main generators are connected to ______.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards46.The operation of _____ two alternators requires the voltages to be equal and alsoin phase.A. controlB. series-mountingC. runningD. paralleling47.______is a machine by which electrical energy is transformed into mechanicalenergy.A. An alternatorB. An electric motorC. A diesel engineD. A main switchboard48. A ground in an electrical circuit outside the engine room ______.A. cannot be detected under normal conditionsB. is of no consequence to engineering personnelC. is indicated at the branch circuit breaker panelD. is indicated by the ground detecting lamps on the main switchboard49.Time delayed or delayed action-type fuses are designed to ______.A. prevent grounds in branch circuitsB. prevent opens in motor circuitsC. permit momentary overloads without meltingD. guard lighting and electronic circuits50.When voltage and current developed in an AC circuit reach their peak values atthe same time, the power factor is ______.A. laggingB. leadingC. maximumD. minimum51.When there is a fire in a large electric motor, normally the very FIRST step is to____.A. secure the electric supplyB. ventilate area to remove smokeC. start the fire pump and lead out hoseD. apply foam52.Before “stand by” is rung on the engine telegraph, it is usual to give the maindiesel engine a brief trial ______ahead and astern.A. with powerB. on powerC. with airD. on air53.Bridge orders must be ______and a record of any required changes in speed anddirection should be kept.A. slowly carried awayB. carried out with a period of delayC. promptly carried outD. paid by the captain54.After the order ' ______' is given, the air system is shut down, the turning gearput in.A. Finished With EngineB. Stop The EngineC. Stand-by EngineD. Slow-down Engine55. A tank has been sealed and unventilated(不通风的) for a long period of time.Which of the following conditions does this indicate?A. The tank is safe to enter.B. The tank is especially dangerous to enter.C. Carbon monoxide(一氧化碳) is present.D. Water vapor present when the tank was sealed has oxidized(使氧化).56.Fires involving combustible metals are classified as ______.A. class 'A' firesB. class 'B' firesC. class 'C' firesD. class 'D' fires57.The three basic components of a fire are chain reaction, heat, fuel, and ______.A. carbon monoxideB. oxygenC. carbon dioxideD. any gaseoussubstance58.CO2 extinguishes a fire by __________.A. a blanket of bubbles formed on the surface of the fireB. smotheringC. isolating the heat from the fuelD. cooling59.Seawater may be used for drinking water ______.A. at a maximum rate of two ounces(盎司) per dayB. after mixing with an equal quantity of fresh waterC. if gather during or immediately after a hard rainD. under no circumstance60.Obviously, for a given fuel oil, its pour point is ______its cloud point.A. lower thanB. higher thanC. as same asD. better than61.Now that the valve is not worth ______, I suggest it ______.A. to repair/renewingB. repairing/renewingC. to repair/ be renewedD. repairing/be renewed62.When a vessel is in dry-dock, the vessel's engineers should ______.A. examine the condition of the propellerB. chip and paint all hull protection zincsC. install new docking plugs in all cofferdamsD. inspect the hull for hogging or sagging363.The additional mark ______in the Classification Certificate for Machineryrepresents the propulsion apparatus is remotely controlled on the navigatingbridge control station, and engine room is watched by duty personnel.A. BRCB. MCCC. AUT-0D. AUT-164.Oil Record Book Part I shall be provided to ______.A. every oil tankerB. every ship of 400 tons gross tonnage and aboveC. every shipD. any ship65.“Inability to provide for the first watch at the commencement of a voyage and forsubsequent relieving watches persons who are sufficiently rested and otherwise fit for duty.” is considered to be one of the detainable deficiencies(缺乏) under ______.A. the SOLAS ConventionB. the MARPOL ConventionC. the STCW ConventionD. the LOAD LINE Convention66.The Port State Control officer may witness a fire drill carried out by the crewassigned to these duties on the ______.A. Navigation Log BookB. Engine Room Log BookC. Oil Record BookD. Muster List67.When deciding the composition of the engineering watch, which may include_____appropriately, many factors shall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief engineer68.During an engine room watch if immediate action is necessary to ensure safety ofthe ship, its machinery and crew, ______.A. the chief engineer must be informed at firstB. the captain must be informed at firstC. it must be taken by the duty engineerD. the generator engine must be stopped69.One of the methods NOT usually allowed in cleaning up oil spills in the UnitedStates is ______.A. skimmersB. strawC. dispersantsD. sawdust70.According to the international regulations concerning the prevention of pollutionof sea areas from ships, the disposal into the sea of all plastics is ______.A. welcomeB. admitted in some special sea areasC. prohibitedD. acceptable71.In cleaning up an oil spill, the use of chemical agents would ______.A. absorb the oil for easy removalB. remove the oil from the waterC. disperse(分散) or dissolve the oil in the waterD. not affect the oil72.The main objective of the SOLAS Convention is to specify ______for theconstruction, equipment and operation of ships, compatible their safety.A. at most referencesB. at least referencesC. maximum standardsD. minimum standards73.These acid residues must be prevented from entering the crankcase, otherwise thelube oil would be _______ .A. optimizedB. emulsifiedC. contaminatedD. oxidated74.The ship security officer shall have knowledge and have received training, takinginto account the guidance given in Part B of______.A. the ISM CodeB. the ISPS CodeC. the IBC CodeD. the IGC Code二、关联题（关联题题干下有4个小题，每小题4个选项）The clearly visible benefit of RT-flex engines is their smokeless operation at all ship speeds. This is achieved by the superior combustion performance with the common-rail fuel injection.This system maintains the fuel injection pressure at the optimum level right across the engine speed range, ensuring optimum combustion under all operating conditions. In addition, a selective shut-off of single injectors at very low speeds and an optimized exhaust valve timing help to keep smoke emissions below the visible limit.Sulzer RT-flex engines also have the advantage of steady running at lower speeds than engines with mechanically-controlled injection. They can run very steadily, andwithout smoking, at 10-12% of nominal speed, which for the RT-flex 60C is about 10-14rpm. This is made possible by the precise control of injection, together with the higher injection pressures achieved at low speed, and the sequential shut-off injectors.75.According to above massage, the advantage of common-rail injection is______.A. smokeless operationB. shockless operationC. noiseless operationD. no vibration operation76.According to above massage, RT-flex engine can optimize______.① fuelinjection pressure ② combustion ③ exhaust valve timingA.①②B. ①②③C..③D. ②77.The key feature of the Sulzer RT-flex system is that it gives complete freedom inthe _____ and operation of fuel injection and exhaust valve actuation.A. meteringB. timingC. controlD. using78.The RT-flex engine can run at very low speed, this is made possible byfollowing things except _______.A. the precise control of injectionB. the higher injection pressuresC. the optimized exhaust valve timingD. the sequential shut-off injectors4三、中译英（共2题，请将答案写在答题纸上）79、（轮机日志）上午10时30分，由于不明原因运行中NO.1发电机跳闸，导致全船失电, NO.2发电机自动起动恢复正常供电。
轮机英语真题47期 甲类三管轮
轮机英语真题47期甲类三管轮2021年第1期海船船员适任统考试题（总第47期）一、单项选择题1.The ____engine is used for alternators and some times for main propulsion with a gearbo_ provide a propeller of between 90 to 120 rpm.A.four-strokeB.Two-strokeC.Slow speedD.reversible2.The abbreviation "MIP" stand for_____.A.middle indicating pressureB.mean indicated pressureC.Mean indicated pitchD.Middle indicated power3.The cetane number of a diesel fuel oil indicates its_____.A.V iscosityB.Acid contentC.Heating valueD.ignition quality4.In a two-stroke engine the camshaft rotates at____the engine rotational speed.A.HalfB.twiceC.The same speed asD.Four times5.A diesel engine is similar to a gasoline engine e_cept that the former has no_____.A.Cross-headB.CylinderC.Connecting rodD.spark plug6.It is easier to replace a dry cylinder liner than a wet one because______.A.Of the thin wall thicknessB.honing makes it easier to maintain the desired oil filmC.Water seals are not requiredD.It fits more loosely due to a decrease in heat transfer through the posite wall7.A main bearing consists of two shells which are secured by means of studs and _____.A.Tie rodsB.Through boltsC.Lead wiresD.Bearing caps8.However fast or slow the bustion rate, it is still a _____between carbon, hydrogen, sulph and o_ygen that releases heat.A.Physical deformationB.State e_changeC.Chemical reactionD.Coalescence9.During the fuel injection period, fuel pressure must e_ceed cylinder gas pressure to _____.A.Ensure peration and distribution of the fuel in the bustion chamberB.Ensure the needle valve is flushed clean during each injectionC.Prevent bustion gas blowback into the open needle valveD.Prevent reflected pressure waves when the needle valve closes10.In a diesel engine lube oil system, which of the follog parts should be lubricated first?A.Camshaft bearingMain bearingC.Piston crownsD.Cylinder walls11.In a diesel engine closed fresh water cooling system, the amount of coolant flog through the heat e_changer is controlled by the ______.A.Suction pressure regulatorB.Thermostatic bypass valveC.Sea water temperatureD.Water level in the e_pansion tank12.which of the diesel engine ponent listed increases air density and helps to improve engine operating efficiency?A.impellerB.Air bottleC.Air coolerD.E_haust diffuser13.a large two-stroke/cycle direct reversing diesel engine is to be reversed.Prior to the admission of starting air you must______.line up the engine for restarting with light diesel oilB.Reposition the fuel injection camC.Change the intake and e_haust valve cam positionsD.Place the starting cam in the intermediate position14.Which of the listed governor characteristics will greatly affect the load sharingrelationship between paralleled diesel generators?A.SensitivityB.PowerC.Speed droopD.pensation15.Thermocouple pyrometers are used on large, main propulsiondiesel engines toindicate the temperature of the ______.A.Cooling water leaving each cylinderB.Fuel oil entering the injectorC.E_haust gases at various locationsD.Lube oil at the bearing supplies16.After starting a diesel engine, which of the listed operating conditions should bechecked first?A.Air bo_ pressureB.Lube oil pressureC.E_haust temperaturesD.rawwater pressure17.To shut down a diesel engine after it e_ceeds the set ma_imum speed, which type ofdevice listed should be used ?A.Speed limiting governorB.Over-speed governorC.Over-speed tripD.Over-speed relay18.The treatment of the fuel oils involves storage, heating, filtering and_____.A.CentrifugingB.PressurizingC.AtomizationD.Igniting19.A propeller, in order to operate efficiently, must rotate at a relatively______speed.A.HighB.LowC.FastD.lowlydoc/87379f7131b765ce0508142b.tent heat changes the ___of water.A.physical stateB.TemperatureC.Atmospheric pressureD.Sensiblepressure21.The primary function of a flame safeguard system, as used on an automatically firedau_iliary boiler, is to prevent_____.A.Accidental dry firing and overpressureB.Uncontrolled fires in the furnaceC.E_plosions in the boiler furnaceD.Overheating of the pressure parts22.Improper maintenance of the fuel oil burners in an automatically fired au_iliaryboiler could result in_______.A.increased fuel consumptionB.Increased feed-water consumptionC.Fuel pump failureD.bustion control system failure23.Burner ignition failure in an automatically fired au_iliary boiler would be causedby______.A.A burned out solenoid in the oil supply valveB.High temperature e_cess airC.Incorrectly setting the hot-well dump valveD.An incorrectly positioned burnersnubber relay24.if the feed pump for an au_iliary boiler fails to deliver the feed water to the boiler,the cause may be______.A.High pressure in the boilerB.Abnormally high feed-watertemperatureC.Abnormally high boiler water temperatureD.demand e_ceeding feedpump capacity25.Gear pumps are of positive displacement type pumps because they discharge a nearconstant amount of liquid______pressure.A.Depending onB.In relative toC.Regardless ofD.because of26.A spur gear pump should be operated with the dischargevalves______.A.Slightly openedB.ThrottledC.Fully openedD.Halfway opened27.An independent bilge suction is required for________.A.Ballast tanksB.Sludge tanksC.Machinery space bilgesD.Cargo holdbilges28.To thoroughly pump out the bilges using a horizontally mounted centrifugal pump,the _______.1A.Pump must always be primedB.V olute must impart a radial and rotary motion of the waterC.Suction side connection must guide the liquid to the lantern ringsD.Stuffing bo_ should not be allowed any water leakage29.An inadequate reciprocating bilge pump discharge is most often caused by______.A.Defective safety valvesB.Clogged suction strainersC.Scarred cylinder wallsD.Clogged drain valves30.In a pression refrigeration plant, the hot, high pressure refrigerant gas is cooled by the sea water and bees liquid in the______.doc/87379f7131b765ce0508142b.pressorB.CondenserC.Throttle valveD.Evaporator31.The______only allows for adjustment of temperature in each room by the occupant manually controlling the air volume admitted.A.Central air conditioning systemB.High velocity systemC.Low velocity systemD.Single duct system32.The opening of the humidifier"s valve of air-conditioner should be _____,when the circumstance temperature is raised to above 5~8℃in the ter.A.DecreasedB.IncreasedC.Fi_edD.Closed33.Under normal conditions.The quantity of air circulation bees less and less.What is the reason?A.Dirty delivery ductsB.Too much refrigerantC.The fouling filtersD.High temperature outside34.When bilge water is heated in a holding tank, which one of the follog statement is not accurate?A.The relative high temperature facilitates primary gravity separationB.Most of the oil and organic solvents are raised to the layer.C.The relative high the temperature is, the more the oil will be collectedD.The normal high temperature has little use on the separation of emulsified oil35.If separating effect of the oily water separator is not good, we can improve it by_____.A.Flushing separator with cold waterB.increasing bilge water supply flowC.Heat oily water properlyD.Opening manual oil discharge valve36.Which is the pollution prevention equipment?A.Booster pumpB.EvaporatorC.IncineratorD.Cooler37.When does au_iliary burner of rotary nozzle type incinerator put into use? Ⅰ、when igniting Ⅱ、the waste oil for dealing with is too much Ⅲ、before sping incineratorA.Ⅰ+ⅡB.Ⅰ+ ⅢC.Ⅱ+ ⅢD.Ⅰ+Ⅱ+Ⅲ38.when anaerobic bacteria convert the sewage to an inertsludge,______.A.No o_ygen is neededB.O_ygen is necessaryC.O_ygen is given offD.no gas is produced39.For a I.O.purifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will______.A.Be interruptedB.Move downwardsC.Move outwardsD.retain original position40.When separating the lube oil without additive, it is usually working with hot water; the aim is to remove _____from it .A.AcidB.Oil sludgeC.Mechanical impurityD.Salinity41.If the bowl of a disk type centrifugal purifier when operated asa separator is not primed the _____.A.Oil has a tendency to emulsify in the bowlB.Purifier will act as a clarifier at the discharge ringC.Oil will be lost through the water discharge portsD.Oil solids will be deposited only at the intermediate disk42.Tube leaks in the distillate cooler of a two stage flash evaporator will resultin______.A.Loss of second stage vacuumB.Contamination of the distillateC.Lower feed mfet temperatureD.Contamination of the second stagecondenser43.Small droplets of water entrained in the flashed vapor produced in a flash-typeevaporator, are removed by the ______.A.Spray pipesB.DemistersC.CondensersD.Splash baffles44.Overflow valve usually be used to ______.A.Control the fluid flow through itB.Prevent the pressure before overflow valve over the specified valueC.Make the pressure after overflow valve steadyD.Control the direction of oil flow45.Among the basic categories of equipment, which of the follog are used toconvert mechanical into hydraulic energy?A.The hydraulic pumpsB.C.Hydraulic cylindersD.Hydraulic motors46.Cargo handling unit is rated according to the _____to be lifted.A.Cargo craneB.JibC.Safe working loadD.Oil pressure47.The part of the anchor dlass that engages the anchor chain for lifting is calledthe ______.A.Warping headB.Fair leadC.WildcatD.Capstan48.In automatic _____, the ch may be overhauled and wire is paidoff the barrel at aPre-determined ma_imum tension.A.CranesB.C.CapstansD.Mooring ches49.The major source of chemical contaminants in hydraulic fluid is ______.A.Microscopic steel shavingsB.Abrasive wasteC.Anti- o_idant poundsD.O_idation by-products50.Before doing any work on a hydraulic system equipped with accumulators, youshould______.A.Drain the accumulators and purge with o_ygenB.Bleed off all stored energy from the accumulators pletelyC.Charge the accumulators to prevent system energy lossD.Pump the hydraulic fluid into the accumulators to prevent fluid loss51.One factor that determines the frequency of an altemator is the ______.A.Number of turns of wire in the armature coilB.Number of magic polesC.Strength of the mags usedD.Output voltage52.The frequency output of an operating alternator is controlled b the _______.A.Relative speed of the rotor polesB.Number of turns of wire in the armaturecoilC.Strength of the mags usedD.Output voltages53.Prior to closing the breaker when paralleling two ACgenerators ,.Theremended practice is to have the frequency of the ining machine______.A.Slightly less than the line frequencyB.The same as the line frequencyC.Slightly greater than the line frequencyD.Have nothing to do with the linefrequency54.If two A.C.Generators are to be operated in parallel, the load is distributed evenly2by______.A.Mens of rheostatB.A balance coilC.Adjusting the governor settingD.Changing e_citation55.The first requirement for logical troubleshooting of ant system is the ability to ______.A.Collect all available data on a casualtyB.Recognize normal operationC.Identify the probable cause of a symptomD.Isolate the faulty ponent56.______is(are) not power supplied by main switchboard directly.A.Steering gear and dlassB.Navigation light and radio power panelC.Navigation device power bo_D.Daily fresh water pump57.The emergency generator or emergency battery is connectedto______on most large ships.A.Distribution boardsB.Section boardsC.Emergency switch boardsD.Main switch boards58.______connectors hold best if a wire is accidentally pulled or a connection bees loose.A.Ring typeB.Fork typeC.Spade typeD."Push on, pull off" type59.The primary function of an electric motor is to ______.A.Develop torqueB.Generate high voltagesC.Produce a magic fieldD.Generate high electrical resistance60.puses placed in series with a thermal trip-type circuit breaker are used for ______.A.Time-delay protectionB.Short-circuit protectionC.Short duration surge protection surge protectionD.Sustained overload protection61.Shore power must be ______during dock repair.A.DisconnectedB.Switched offC.Cut offD.Connected62.The operator of electrical motors should keep a constant check on the loads they carry because __________.A.Low loads necessitate frequent insulation cleaningB.E_ceeding nameplate values shortens useful lifeC.Energy is wasted if full loading is not utilizedD.Power factor correction methods are load dependent63.Before a marine diesel engine is started the cylinders and pistons must be ______.A.Cooled to ropriate temperatureB.Warmed up gradually to ropriate temperatureC.Opened up and renewedD.Ground and polished64.______is a precaution which contributes to avoiding trouble under normal operating conditions.A.Constant inspectionB.Keeping constant loadC.Remaining constant temperatureD.V arying speed65.During ship manoeuvering , when the diesel is sped, which of the follog items is wrong?A.Keep all systems running normallyB.Main engine is available at any momentC.Shut off the starting air bottle outlet valveD.Pay attention to the changes of the system parameters66.A tank which has been sealed for a long period of time can be dangerous because _____.A.Steel surfaces consume o_ygen by rustingB.Sealed tanks usually form a vacuumC.Moisture condenses in the tank, displacing the o_ygenD.Most tank coatings give off poisonous vapors in the presence of moisture67.The class of fire on which a blanketing effect is essential toe_tinguish the fire is_______.A.Class "A"B.Class "B"C.Class "C"D.Class "D"68.Fires in escaping flammable gas are quickly brought undercontrol by_______.A.Sping the flow of gasB.Reducing the chemical chain reactionC.Increasing the o_ygen supplyD.Cooling below the autoignition point69.Which of the follog statements is true concerning carbon dio_ide when used as afire e_tinguishing a gent？A.Carbon dio_ide is corrosive when e_posed to fireB.Carbon dio_ide should be lied slowly to a large engine room fireC.Its total cooling effect is far greater than waterD.Its smothering effect is e_cellent for class B fires70.While on watch in the engine room.Y ou hear a continuous sounding of the generalalarm.Which of the follog actions should you take?A.Make an entry en the official logbookB.Open the master control valves on the fi_ed CO2 system.C.Start the fire pump and check discharge pressureD.Secure au_iliary condenser overboard discharge71.To determine that a partment contains sufficient o_ygen to sustain life, youshould use a/an______.A.E_plosimeterB.O_ygen indicatorC.Fresh air indicatorD.Emergency escape breathing devece72.If the overflow tank high-level alarm sounds while the fuel oil tanks are beingped off.The engineer should __________.A.Close the static leg filling valveB.Close the overflow tank filling valveC.Reduce the fuel oil pumping rateD.S the fuel oil pumping operation73.The _______tools is used in precision work to smooth or enlargea slightlyundersized hole.A.Round outB.Round fileC.ReamerD.Hole driller74.During the dock repair, each sea valve seat should be checked and ratified by_____before reassembled.A.Chief engineerB.SurveyorC.The engineerD.the technique personnel ofthe shipyard75.the additional mark_______in the classification certificate for machinery meanspropulsion aratus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.A.BRCB.MCCC.AUT-0D.AUT-176.The oil record book, as a part of the ship"s official logbook, shall be kept on boardand preserved for a period of ______.A.3years after making the first entryB.2years after the last entryC.3months after last entryD.3years after the last entry77.The valid period of the international oil pollution prevention certificate on boardisn"t more than______.A.One yearB.Two yearsC.Four yearsD.Five years78.During the PSC inspection under the provisions of SOLAS 74.Which one may notbe regarded as clear grounds for ships" detainment?3A.failure of the proper operation of emergency generatorB.Insulation of piping including e_haust pipes in engine room contaminated by oilC.Improper operation of bilge pumping arrangementsD.Damaged sanitary pump79."insufficiency of manning or insufficiency of certification of seafarers" is an identification of a _________.A.Substandard shipB.Standard shipC.Over-standard shipD.Reference ship80.STCW 78/95 convention shall ly to seafarers_______on board seagoing ships entitled to fly the flag of a party.A.ServedB.ServingC.SurveyedD.Surveying81.All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible_____to prevent such pollution, particularly within the framework of relevant international and port regulations82.When the order given by bridge may have bad results, the duty engineer should______.doc/87379f7131b765ce0508142b.rm the captain for a further considerationdoc/87379f7131b765ce0508142b.rm the captain, and not perform itC.S the M/B immediately, and then inform the chief engineerD.S the M/B immediately, and then inform the captain83.If an oil spill occurs on deck, you should______.A.Cover the area with foamB.Cover the area with absorbent materialC.Wash down immediately with a fire hoseD.Wash down immediately with an oil dispersing solvent84.According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is _______.A.WeleB.Admitted in some special sea areasC.ProhibitedD.Acceptable85.The main objective of the SOLAS convention is ______.A.To provide a solution of lowering pollution at seaB.To specify minimum standards for the members posing the watch at seaC.To specify minimum standards for ships considering their safetyD.To tell the pany how to go about running their business86.Which of the follog about ISM code is not right?A.It aims to ensure safety at seaB.It aims to avoid damage to the environmentC.It aims to prevent human injury or loss of lifeD.If aims to provide a method to run a pany87.The ship security assessment is an essential and integral part of the process of developing and updating____________.A.The ship security planB.The pany security planC.The port security planD.The national security plan88.In order to limit the introduction of alien species by ship, ______was adopted on 13 Feb,20__4 at the IMO.A.Revised Marpol anne_ⅠB.Revised marpol anne_ⅡC.International convention for the control and management of ships" ballast water and sedimentsD.ISPS code二、关联题（关联题题干下有4个小题，每小题4个选项）第一组：Stating Air SystemThe engine is started with pressed air of ma_ 30bar.Minimum pressure required is 15bar.A pressure transmitter PT301 mounted on the starting air line before the main starting valve has an indicator in the instrument panel.The supply line from the staring air bottles is provided with a non return valve and a drain valve.The solenoid valve is electrical(remote control) or manual (on the engine) operated and send after activation a pilot air signal to the main starting air valve.Interruption of the control air doses the main starting air valve.After the main starting air valve is activated the air flows through the flame arresters to the starting air valves in the cylinder heads.The starting air distributor controls the timing of opening and closing of the starting air valves.On the moment the main staring air valve is operated also the governor booster is energized.The main starting air line is provided of a safety valve.Interlock valve is a safety device to avoid an engine start with engaged turning gear.89.As the engine is started with pressed air, the correct sequence of the follogdevices being activated is______.1.solenoid valve 2.Starting air valve 3.Starting air distributor 4.Main starting air valve.doc/87379f7131b765ce0508142b.ernor boosterA.1,5,4,2,3B.1,4,5,3,2C.1,4,3,2,5D.4,3,1,2,590.inderline sentence "the governor booster is energized" probablymeans___________.A.The governor booster is supplied with electric powerB.Hydraulic oil is pumped into the governor boosterC.The governor starts to work before starting the engineD.The governor booster is supplied with pressurized air before starting the engine91.Which of the follog ponents are attached to the air bottles?A.A pressure transmitter PT 301B.A non-return valve and a drain valveC.A solenoid valveD.A starting air distributor92.When the engine is engaged with turning gear, _______can keep the engine fromstarting.A.the control airB.The solenoid valveC.The main starting air valveD.theinterlock valve第二组：（1）The pany should establish procedures to ensure that the ship is maintained in conform the provisions of the relevant rules and regulations and with any additional requirements which established by the pany.（2）In meeting these requirements the pany should ensure that:(2.1) inspections are held at ropriate intervals(2.2) any non-conformity is reported, with its possible cause, if known；(2.3) ropriate corrective action is taken; and(2.4) records of these activities are maintained.(3)The pany should establish procedures in its safety management system toidentify equipment and technical systems the sudden operational failure of which may result in hazardous situations.The safety management system should provide for specific measures aimed at promoting the reliability of arrangements and equipment or technical system that are nor in continuous use.93.This passage concerns ______.A.The inspections of the ship and equipmentB.The reports of non-conformitiesC.The corrective actionsD.The maintenance of the ship and4equipment94.In(2.4) of this passage,"these activities" refers to the follog activities e_cept_________.A.The establishment of any additional requirementB.The corrective action takenC.The inspections heldD.The reporting of any non-conformity95.According to this passage, some particular equipment should have specific measures to promote its reliability, because_______.A.It is not in continuous useB.Its sudden failure may result in hazardous situationsC.Its stand-by arrangements may not be regularly testedD.It may not be identified by the pany"s safety management system96.This passage is probably taken from___________.A.The MARPOL conventionB.The STCW conventionC.The ISPS codeD.The ISM code47轮机英语的答案1- 5 ABDCD 6-10 CDAAB11-15 BCBCC 16-20 BCABA21-25 DAABC 26-30 CCABB31-35 DDCDC 36-40 CBACA41-45 CBBBC 46-50 CCDDB51-55 BACCB 56-60 DCAAB61-65 DBBAC 66-70 ABADC71-75 BDCCC 76-80 DDDAB81-88 CABCCDAC 89-96 BDBDDABD 5。
轮机员英语面试(轮机长、大管轮、二管轮、三管轮适用)
轮机员英语面试（轮机长、大管轮、二管轮、三管轮适用）1、Can you measure oil level? Which method is right, to measure ullage height or to measure oil depth?Both will do. In practice, to measure ullage height is more specific than to measure oil depth. To measure ullage height, we should know the standard height of oil tank. In common practice, we usually measure the oil depth.2、Could you tell the working parts of a gas welding gun?Yes, sir. The working parts include nozzle, oxygen valve, acetylene valve, oxygen supply, acetylene supply. In addition, filler rod is used to fill in welded joint when it melts.注：焊枪是轮机部常用的维修工具，工作时这些部件名称经常涉及到。
3、How to pump out bilge water in the engine room?Pump bilge water into sludge tank. Then pump bilge water into oily water separator. Enquire master or deck officers on duty to pump out at appropriate water. The proportion should not beyond 15 PPM.机舱排污水程序可表述为把污水排到污水集中柜内，再通过油水分离器在允许排放区域按含油量小于15 PPM排放。
轮机英语三管轮试题货物装卸
轮机英语三管轮试题货物装卸1875. _____ are used for cargo handling.A. CranesB. Mooring winchesC. WindlassesD. Foreman 1876. The drive motor will have a brake arranged to fail-safe, i.e. it will_____ the load if power fails or machine is stopped.A. liftB. putC. takeD. hold1877. The drive motor will have a brake arranged to fail-safe, i.e. it will_____ the load if power fails or machine is stopped.A. castB. putC. holdD. let out1878. In a general cargo crane, _____ is fitted to raise or lower the jib.A. the slewing motorB. the luffing motorC. the hoisting motorD. none of the above1879. In a ordinary cargo crane, _____ is fitted to rotate the crane.A. the slewing motorB. the lulling motorC. the hoisting motorD. none of the above1880. The crane is usually mounted on a pedestal to offer adequate_____ to the operator.A. timeB. spaceC. lengthD. visibility1881. In a general cargo crane, _____ is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. none of the above1882. When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the_____.A. dockB. holdC. pedestalD. machinery space1883. Cargo handling unit is rated according to the_____ to be lifted.A. cargo craneB. jibC. safe working loadD. oil pressure 1884. Topping wires fix the height of the derricks and_____ to the deck may be used to prevent fore and aft movement.A. staysB. winchesC. barrelsD. brakes1885. _____ may be fitted for operating the derrick topping lift (the wire which adjusts the derrick height).A. A capstanB. A holdC. A warp endD. A mooring drum1886. Manually operated band brakes may be fitted and_____ will have a brake arranged to fail-safe.A. the drive pumpB. the drive motorC. the warp endD. the purchase 1887. In cargo crane, _____ for lifting the load.A. a hoisting motorB. a luffing motorC. a mooring motorD. a slewing motor1889. These include deck machinery such as mooring equipment, anchor handling equipment, cranes and_____.A. boilersB. bow thrustersC. stabilizersD. hatch covers1890. A warp end may be fitted for operating the derrick topping wire which adjusts the derrick _____.A. lengthB. slackC. heightD. rotation direction1891. In a general cargo crane, three principal movements are_____; _____; _____.A. hoisting/luffing/slewingB. lifting/raising/loweringC. rotating/raising/handlingD. hosting/lowering/moving1892. For occasional heavy loads, two cranes can be arranged to work together. The operating _____ for deck crane motors may be hydraulic electric.A. principleB. mediumC. instructionD. voltage1893. Hydraulic cranes must be properly warmed-up before being operated because_____.A. warm-up allows the hydraulic system to become charged with oilB. warm-up allows the relief valves to be properly testedC. hydraulic strainers operate only during the warm-up periodD. hydraulic fluid must be at the proper viscosity1894. The oil in a cargo winch gear box should be sampled periodically to_____.A. prevent the gear box from leakingB. prevent the oil from becoming inflammableC. make sure it has not become contaminatedD. make sure the motor bearings are lubricated1895. The duty of a deck winch is to lift and lower a load by means of a fixed rope on_____.A. a warp endB. a mooring winchC. a worm gearD. a barrel 1896. Deck cranes require_____ time to prepare for working cargo than derricks.A. lessB. moreC. manyD. much1897. Some cranes are mounted in pairs on a common platform which can be rotated through_____.A. 360oB. 270oC. 180oD. 90o1898. _____ can be operated independently or locked together and operated as a twin-job cranes of double capacity.A. Two derricksB. A derrick and a craneC. Two cranesD. A crane and a winch课后练习1899. The crane is usually mounted on a pedestal to offer adequate ______ to the operator.A. timeB. spaceC. lengthD. visibility1900. When the union purchase derrick is operated, one derrick os positioned over quayside and the other almost vertically over the_______.A. dockB. holdC. pedestalD. machinery space1901. Cargo handling unit is rated according to the ________to be lifted.A. cargo craneB. jibC. safe working leadD. oil pressure1902. _____are used for cargo handling.A. cranesB. mooring winchesC. windlassesD. foreman⼤连新题1903. Which systems in the hydraulic systems of crane always holds single side of load?A hoisting system onlyB hoisting system and luffing systemC hoisting system and slewing systemD slewing system1904. The crane jib is raised and lowered by means of ______.A a mooring winchB a hoisting winchC a slewing winchD a luff9ing winch1905. ______have replaced derricks on many modern ships.A. CranesB. WinchesC. CapstansD. Hydraulic motors添加题1906. For occasional heavy loads, two cranes can be arranged to work together. The operating _______ for deck crane motors may be hydraulic or electric.A principleB mediumC instructionD voltage。
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轮机英语全国统考试题(总第46期)一、单项选择题1. In order to control thermal stresses,some types of modern engines use pistons with .A.heavy wall and intensive coolingB.heavy wall and no coolingC.thin wall and no coolingD.thin wall and intensive cooling2. The average pressure exerted on a piston during each power stroke is termed .A.indicated horsepowerB.mean eff ective pressureC.exhaust back pressurepression pressure.3.The ignition quality of a diesel f uel is indicated by theA.cetane numberB.volatility pointC.viscosity indexD.octane number4.A piston in a f our-stroke/cycle diesel engine makes f our strokes during eachA.crankshaf t revolutionB.mechanical cycle of operationC.period of two combustion cyclesD.cycle of two events5.Crankshaf ts of medium speed engines are f rom a single piece of steel.A.unusually solid weldedB.never be solid f orgedC.almost invariably solid f orgedD.almost invariably be welded6.The start ing air entering the cylinder begins when the piston .A.has nearly come to the TDCB.has just past the TDCC.has nearly come to the BDCD.has just past the BDC7.A main bearing consists of two shells which are secured by means of studs and .A.tie rodsB.through boltsC.lead wiresD.bearing capspared to f our-stroke/cycle engines,two-stroke/cycle diesel engines have the disadvantage of.A.less even torqueB.higher cylinder head temperaturesC.f ewer power strokes per revolutionD.greater weight/size requirements9. controls the f uel oil temperature in order to provide oil at the correct viscosity f or combustion.A.The viscosity regulatorB.The temperature controllerC.The f low meterD.The pressure switch10.In a diesel engine lube oil system,which of the f ollowing parts should be lubricated f irst?A.Camshaf t bearingsB.Main bearingsC.Piston crownsD.Cylinder walls11.A large,low-speed,main propulsion diesel engine uses sea water to directly cool theA.cylinder headsB.exhaust valvesC.scavenging airD.injectors12.In a turbocharger , inlet air velocity is increased in the .A.inlet nozzle ringB.stationary dif f user passagespressor outlet voluteD.rotating impeller vanes13.Each cylinder has one starting valve which is usually opened by air pressure and closed byA.nuts nad boltsB.new jointsC.spring f orceD.sealing rings14.In a simple mechanical governor, theA.centri f ugal f orce rotates the ball-headB.f lyweight centri f ugal f orce is balanced by spring f oceC. f lyweight centri f ugal f orce is balanced by hydraulic pressureD.speeder spring alone actuat es the f uel control rod15. A pyrometer is an instrument commonly used to measureA.cylinder pressureB.f lame intensityC.exhaust gas temperatureD.crankshaf t axial alignment16.Af ter starting a diesel engine,which of the listed operating conditions should be checked f i rst?A.Air box pressureB.Lube oil pressureC.Exhaust temperaturesD.Raw water pressure17.A high temperature alarm or which will melt is used to guard against the explosion of compressor air pipelines. A.a f lame trap B. a relief valveC.a f usible plugD.a bursting cap18. What preventative maintenance should be done frequently to diesel engine starting air receivers?A.Drain the accumulated moisture.B.Test the relief valves.C.Watch the temperature to prevent f luctuations in pressure.D.Clean the interior to remove oil and f oreign matter.19.In reducing engine speed to and eff i cient propeller speed by the use of reduction gears,A.speed and torque are both reducedB.speed is reduced and torque remains unchangedC.speed is reduced and torque is increasedD.speed is sometimes unchanged while torque is increased20.Which of the f ollowing statements concerning f ire-bube boilers is correct?bustion gases f low through the tubes.B.Flames impinge on the tubes.bustion occurs in the tubes.D.Water f lows through the tubes.21.The exhaust boilers are used to recover some of carried in the exhaust gas f rom the main engine .A .water B.oil C.heat D.steam22.The water level in a steaming auxiliary boiler will always .A.rise when the steam pressure is increasedB.remain constant as long as the f eed pump operatesC.f all when the steam pressure is decreasedD.vary as the steam demand changes23.When lighting of f an auxiliary boiler,which of the problems listed could cause the burners to sputter?A.Cold f uel oilB.Low f uel oil pressureC.Low atomizing steam pressureD.Water in the f uel oil24.If the f eed pump f or and auxiliary boiler f ails to deliver the f eed water to the boiler,the cause may beA.high steam pressure in the boilerB.abnormally high f eed-water temperatureC.abnormally high boiler water temperatureD.steam demand exceeding feed pump capacity25.Through a pump,the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.A.positive displacementB.ejectorC.centrif ugalD.air compressor26.Sealing lines provide sealing liquid f low to the stuf f ing box of a centri f ugal pumpA.to prevent seawater from passing out the stuff ing box when a high suction head is presentB.to cool the shaf tC.in place of mechanical sealsD.in place of lantern rings27.Which of the valves listed will be cycled from f ully open to f ully close when the handle is turned 90 degree?A. A rising stem gate valveB.A globe stop valveC.A check valveD. A butterf ly valve28.Centrif ugal pumps,used to handle hot liquids, must have a minimum f low through them under all operating conditions.This f low serves toA.prevent overheating and damage to pump rotating parts due to rubbingB.maintain the net positive suction head of the pumpC.maintain hydraulic dif ferential in the pump impeller passagesD.purge the pump of non-condensable vapors and gases29.If you heard a …crackling‟noise in a centrif u gal pump, the most probable cause of the problem would beA.insuff icient speedB.cavitationC.excess discharge pressureD.excessive net positive suction head30.In the process of,liquid changes into gas.A.evaporation Bf rostingC.condensingpressing31.The device used f or low-pressure control and high-pressure cutout on a compressor is called aA.cutoutB.pressure controllerC.controller switchD.cutout switch32.A purge recovery system is used in a central air conditioning or ref rigeration system toA.purge lube oil f rom the liquid refrigerantB.recover wat er purged f rom the systemC.separate f oul gases f rom the receiverD.purge non-condensabl e gases without losing refrigerant33.In an air conditioning system,low head pressure associat ed with a reciprocating compressor can be the result ofA.broken valve springsB.tight drive beltsC.high line voltageD.air in the system34.When discharging bilge water over board, which criteria must be observed?A.The requirement f or the oil content of bilge water discharged is under 15ppmB.No discharge in sensitive watersC.Any discharge in sensitive watersD.International, national or local requirements have to be observed35.The f ollowing measures can be used to improve oily water separator‟s separating effect exceptA.overhauling every two yearB.working at intervalsC.renewing f iltration materialD.properly heating36.Disposal of all kinds of garbage but listed as below is prohibited within Special Areas.minuted or ground papers, rags, glass, metal etcB.plasticsC.f ood waste comminuted or groundD.Incinerator ash37. When does auxiliary burner of incinerator put into operation?I.start incinerator when it is cold II. Little waste oil f or dealing with III. plenty of waste oil f or dealing with IV the water and impurity in sludge are too much V the temperature in incinerator is low VI dealing with little solid rubbishA.II+III+VB. I+II+III+IVC.I+IV+V+VID.I+II+III+VI38.Bacteria which live are said to be aerobic.A. in the presence of oxygenB.without oxygenC.in the presence of nutritionD.without nutrition39. When centri f uging heavy f uel oil, an important f actor to consider is(are) the .1)f low rate 2)viscosity of thef uel oilA. 1)B.2)C.both 1) and 2)D.Neither 1)nor 2) are correct40.To ensure lube oil purif ier working in normal condition, the interval between two sludge discharging should not exceed hours.A. 2B.4C.5 D641. can not cause oil f low f rom wat er outlet of sel f cleaning purif i er.A. Oil temperature too highB.Diameter of gravity disc too largeC. Oil temperature too lowD.High level tank out of water42. In the production of f reshwat er from seawater through a process of heating and cooling, the cooling phase of production is usually calledA.evaporation BdistillationC.dehydrationD.condensation43.Distilled water f rom an evaporator may be discharged into a potable water tankA. through a detachable hose connectionB.af ter passing through an activated charcoal f ilterC.af ter chemical analysis shows it is f it f or consumptionD.through a solenoid operated three-way valve44.What type of valve is used to direct the f low of hydraulic f luid?A.relief valveB.direction control valveC.stop valverD.pressure control valve45.Cargo hand ling unit is rated according to the to be lif ted.A. cargo craneB.jibC.saf e working loadD.oil pressure46. The crane is usually mounted on a pedestal to effer adequate to the operator. A.time B.spaceC.lengthD.visibility47.Proper internal lubrication of a hydraulic anchor windlass lef t idle f or extended penods can be accomplished by .A.perf orming a chech run on the unit at regular intervalsB.testing the hydraulic f luid f or proper PHC.checking the reservoir f or proper levelD.cleaning strainers at regular intervals48. are used f or hauling in or letting out the wires which f asten the ship to the shore.A.Cargo winchesB.Mooring winchesC.WindlassesD.Cargo hatches49. The major source of chemical contaminants in hydraulic f luid is .A.microscopic steel shavingsB.abrasive wasteC.anti-oxidant compoundsD.oxidation by-products50.If you install a new hydraulic hose in a hydraulic system, the hose must be long enough to allow f or contraction to prevent .A. f ailure of the hydraulic hoseB.excessive f low through the lineC.f riction in other areas of the hydraulic systemD.overheating of the hydraulic f luid51.A cirucit that has one wire in contact with the hull of the ship is aA.series circuitB.grounded circuitC.short circuitD.closed circuit52.The f requency of an alternator at a given r/min is determined by the .A.number of turns of wi re in the armature coilB.number of magnetic polesC.strength of the magnets usedD.output voltage53.The operation of paralleling two alternators requires the voltages to be and also in phase.A.zeroB.eliminatedC.diff erentD.equal54.The f requency of an AC generator is controlled by theA.rheostaternorC.exciterD.capacitor55.A motor enclosure which protects against falling liquids is classif ied asA.water-proofB.drip-proofC.spray-tightD.spray-proof56. are supplied with electricity by main switchboard directly.A.Suez Canal searchlight, air compressor and ai r conditioning compressorB.Air compressor, boiler blower and ref rigeration plantC. Boiler blower , Suez Canal searchlight and ref rigeration plantD.Suez Canal searchlight and boiler blower57. is not installed on the emergency switchboard.A. AmmeterB.V oltmeterC.WattmeterD.Synchroscope58.When two D.C.generators operate in parallel, they are protected against motorizing byA.blow out coilsernor relayC.under voltage tripsD.reverse current trips59.Moisture in a D.C. motor would causeA.short circuitB.speed upC.slow downD.hunting60.The part of a f use that melts and opens the circuit is made ofA.copper and antimonyB.steel and babbittC.aluminum or beryllium alloyD.zinc or an alloy of tin and lead61.The main purpose of an electric space heater installed in a large AC generator is toA.prevent the windings f rom becoming brittleB. prevent moisture f rom condensing in the windings during shutdownC. prevent acidic pitting of the slip ringsD. keep the lube oil warm f or quick starting62.Sparking at the brushes of a running motor could be an indication ofA.normal operationB.a dirty commutatorC.increased brush capacityD.water vapor absorption63. Prior to starting ,the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to \A. test the starting systemB. remove condensation from the cylindersC.check the compressionD.check f or proper lube oil pressure64. During the watch keeping at sea, should be logged or recorded in the engine log book.A.the running hours of the cooling water pumpB.chief engineer‟s orderC.the main parameters of main and auxiliary equipments.D.the position of the vessel65. During ship manoeuvering, when thd diesel is stopped, which of the f ollowing items is wrong?A.keep all systems running normallyB. main engine is available at any momentC.shut off the starting air bottle outlet valveD.pay attention to the changes of the system parameters66.Which of the listed conditions can be considered as the single greatest cause of accidents?A.SpeedB.Excessive knowledge or skillC.Human errorD.Excitement67.On a tank vessel, which of the f ol lowing substances would be burning in a class “B”f ire?A.OilB.WoodC. RagsD.Electrical wiring68.The most likely place f or a f ire to start through the process of spontaneous combustion is inA. an electrical switchboardB.the pressure tanksC.the f uel oil tanksD.the oily rag bin69.Which of the f ire extinguishers listed is to be weighed annually and sent ashore f or recharging if the weight loss exceeds 10% of the weight of a f ull charge?A.FoamB.Soda acidC.Dry chemicalD.Carbon dioxide70.While on watch in the engine room,you hear a continuous sounding of the general alarm.Which of the f ollowing actions should you take f irst?A. Secure the burners then proceed to your assigned boart station.B.Start the f ire pump and establish f low to the f ire main.C.Open the guardian valve and standby to maneuver.D.Open the master control valves on the f ixed CO2 system.71.If there were a f ire in the bunker tanks, you shouldA.close the ventB.pump out the tankC.activate the f ixed CO2 systemD.cut off the heating coils72.To avoid excessive surge pressure when bunkering , you shouldA.bunker at a normal rateB.check f or kinks in hoseC.close valves slowlyD.shut valves bef ore topping off73. ,where minor repairs are carri ed out with a ship in sevice,of ten during a stay in prot. This may be remote from a ship repair site.A.V oyage repairsB.Routine dockingC.Daage repairsD.Conversion74. When is the dock survey carried out ?A.During annual repairually during dock repairC.Bef ore sea trialD.Af ter 5 years f rom last annual survey75.In the initial survey, compiles the survey report and f ills in certif icat e.A.surveyorB.chief engineerC.administratorpany superintendent 76.If an incorrect entry were made in the Oil Record Book, you shouldA.erase the entry and rewrite itB.notif y the ship‟s off icer-in-chargepletely black it out and make the correct entry alongsideD.draw a single line through the wrong entry and initial it.77.The International Oil Pollution Prevention Certif icate is valid f or a period ofA.one year f rom the date of issueB.f ive years from the date of issueC.three years f rom the date of issueD.f our years f rom the date of issue78. Which one is Not the …clear grounds‟f or a more detailed inspection?A. no operation procedures f or the oil separatorsB.engine log book missingC.the master and the chief engineer are unabl e to communicate effectivelyD.absence of an up-date muster list79. The Port State Control off icer may witness a f ire drill carried out by the crew assigned to these duties on theA.Navigation Log BookB.Engine Room Log BookC.Oil Record BookD.Muster List80.STCW 78/95 Convention shall apply to seaf arers on board seagoing ships entitled to f ly the f lag of a Party.A. servedB.servingC.surveyedD.surveying81.The main purpose of port State control is not toA.prevent an unsaf e ship proceeding to seaB.prevent a ship threatening the marine environmentC.f ine the shipsD.conf irm a saf e sailing82.The bridge should inf orm the engine room bef ore passing through congested or shallow waterway.A.24 hoursB.2 hoursC.1 hourD.15 minutes83.When the chief engineer is in the machinery spaces,the officer in charge of the engineering watch shallA.continue to be responsible f or machinery space operations despite the presence of the C/EB. hand over the responsibility to the chief engineer activelyC. be responsible f or the watching together with the chief engineer.D.assistant the chief engineer to contol the machinery.84.According to the international regulations concerning the prevention of pollution of sea areas f rom ships, the disposal into the sea of all plastics isA.welcomeB.admitted in some special sea areasC.prohibitedD.acceptable85.The ship emergency plan item does not include usually.I lif esaving, f ire f ighting II f irst aid III abandon shipA. IIB.IIIC.II IIID.I86. Under ISM Code, the ship to which it applies has to carryA. an International Ship Security Certif icat eB. an International Oil Pollution Prevention Cerif icatC.a Saf ety Managem ent Certif icateD. an International Ballast Water Management Certif icate87. The objective of ISPS Code isA. to protect the marine environmentB. to provide a method to avoid an accidentC. to protect the ship f rom collisionD. to keep terrorism action away f rom ships.88. According to “MARI TIME LABOUR CONVENTION,2006”,The maximum hours of work shall not exceedA.14 hours in any 24-hour periodB. 72 hours in any seven-day periodC.10 hours in any 24-hour periodD.88 hours in any seven-day period二、关联题（关联题题干下有4个小题，每小题4个选项）第一组Port State Control(PSC) is the inspection of f oreign ships in national ports f or the purpose of veri f ying that the condition of the ship and its equipment comply with the requirements of international conventions and that the ship is manned and operated in compliance with applicable international laws.The primary responsibility f or ensuring that a ship maintains a standard at least equivalent to that secif ied in internaitonal conventions rests with the f lag State and if all f lag States perf ormed their duties satisf actorily there would be no need f or port State control. Unf ortunately this is not the case as evidenced by the many marine accidents around the world-hence the need f or additional control.The authority f or exercising PSC is the national law based on relevant conventions. It is theref ore necessary f or a port State to be Party to those conventions and to have promulgated the necessary legislation bef ore exercising PSC. In accordance with the provisions of the applicable conventions,Parties may conduct inspections of f oreign ships in their ports Port State Control Off icers(PSCOs).89.The purpose of PSC is1) to check and inspect f oreign ships 2) to verif y the condition of a ship in compliance with requirements o f international conventions;3)to make sure that the ship is manned and operated well 4)to detain shipsA 1)2) B.2)3) C.1)3) D.123490.Who will be responsible f or ensuring that a ship maintains a standard at least equivalent to that specif i ed in international conventions?A.PSCOsB.Ship ownersC.Flag statesD.Port states91.Bef ore exercising PSC,a port state shouldA.become a contracting Party and promulgate regulations f or implementing PSCB.inf orm ship ownersC.establish proceduresD.inf orm shipping companies92. PSC inspection is implemented by throughA. f lag states/PSCOsB.f lag states/ship ownersC.port states/PSCOsD.port states/ship owners第二组Almost all f ailures in the f uel oil system,including the compression being to low,result in the crankshaf t rotating more slowly if there is a f ailure at one or more cylinders simultaneously. If only one or two cylinders fail, and the engine is not f ully loaded, the crankshaf t rev/min does not decrease, the reason being that the governor ensures that the remaining cylinders are loaded to a correspondingly great er extent. If the engine is already f ully loaded, the cylinders that are working normally become overloaded causing a smoking exhaust and higher exhaust temperatures etc. The load must always be reduced until the f ailure has been located and recti f ied. The reasons f or a cylinder suddenly working at reduced load, or failing completely, may be :1. a def ective or blocked f uel injection valve.2.the f uel oi l pump piston seizing in the barrel. This f ailure can be ascertained by trying to move the pump‟s toothed rack.Defective f uel pumps must be changed.3.the compression being to low because of sticking , worn or broken piston rings.4 leaking inlet or exhaust valves5. no clearance in the valve operation gear.The reasons f or the crankshaf t rotating more slowly, or stopping completely,can also be:1. the f uel oil f ilter being blocked. This f ailure is identif ied by decreasing oil pressure af t er the f uel oil f ilter.2.valve sticking in the open position3.leaking f uel oil pipes or joints.4.water in the f uel oil5.the regulating mechanism being jammed6.the governor not f uncitoning correctly.7the electrical shutdown valve(the monitoring system)being activated.93.This passage is mainly aboutA.the f ailure of reduced rpm.B.the f ailure of the governorC.how to ensure the constant rotational speedD.the reasons f or the f uel system to shut down94.If one or two cylinders fail in f uel oil system the crankshaf t rev/min .1)will invaviably decrease 2)does not decrease 3)will decrease under certain circumstancesA.1B.2C.3D.None of 1 2 3is true95. Which of the f ollowing is NOT mentioned as the reason f or a cylinder suddenly working at reduced load?A.f uel valve f ailureB.f ailure of f uel pump discharge valvesC.too large gaps of piston ringsD.the f uel oil f ilter being blocked completely96.Which of the f ollowing is NO T mentioned as the reason f or the crankshaf t rotating more slowly or stopping?A.changing f rom heavy oil to light diesel oilB.connections leakingC.there being too much waterD.malf unction of the governor 46轮机英语的答案1- 5 DBABC 6-10 BDBAB11-15 CDCBC 16-20 BCACA 21-25 CDDBA 26-30 BDABA 31-35 BDADA 36-40 BCACB 41-45 DDDBC 46-50 DABDA 51-55 BBDBA 56-60 DDDAD 61-65 BBBCC 66-70 CADDB 71-74 ACABA 76-80 DBADB 81-87 CCAC ACD 88-AB 89-92 ~~~~ 93-96~~~~。