三管轮轮机英语大证考试真题41期
三管轮轮机维修38-42期真题
中华人民共和国海事局2005年第3期海船船员适任证书全国统考试题(总第38期)科目：轮机维护与修理试卷代号：873适用对象：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：本试卷试题均为单项选择题，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。
每题1分，共100分。
1. 下列现象中________是反映船机性能方面的故障先兆A. 压力异常B. 消耗反常C. 声音异常D. 外观反常2. 在实际生产中，通过对产品________的调查、统计和计算分析，便可评价和鉴定产品的可靠性。
A．故障发生的原因 B．故障模式C．故障规律 D．故障的征兆3. 图的曲线属于往复式发动机的气缸、轴承、船体和飞机机体等大量单体部件的故障率曲线。
4. 按故障的原因分类来说，滑油变质造成轴瓦合金熔化的故障属于：A．人为故障 B．波及性故障 C．结构性故障 D．管理性故障5. 按故障的发生和发展过程的特点来看，发电柴油机的连杆螺栓的断裂引起的活塞的破坏（连杆伸腿）属于：A．突发性故障 B．渐近性故障 C．二次故障 D．断续性故障6. 船舶主机自动停车是________故障。
A. 渐进性B. 突发性C. 波及性D. 管理性7. 属于船舶短时停航的重大故障是主机的:A. 某缸发生较严重拉缸B. 某缸喷油泵柱塞咬死C. 曲轴折断D. 增压器损坏不能工作8. 关于“视情维修”的描述，错误的是:A. 可依设备的技术状态确定检修时间B. 针对性强，但维修费用高C. 可以有效预防故障及充分利用寿命D. 机械设备应具有视情设计的设备结构9. 可维修度M（t）：A．随维修时间t增大而减小 B．随维修时间t增大而增大C．不随维修时间t变化 D．没有固定的规律10. 在设计时赋予产品的可靠性是_______可靠性。
A. 实际B. 固有C. 使用D. 综合11. 关于设备采用定时维修方式的缺点,说法不对的是：A．针对性和准确性不高B．有时不仅无效，甚至有害C．可靠性不很高、维修工作量大、费用高D．从对设备状态监控的角度来看，对设备的监控是非阶段性的和不连续的12. 产品的使用可靠性难于达到其_______可靠性。
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。
三管轮轮机英语大证考试真题40期
中华人民共和国海事局2006年第2期海船船员适任证书全国统考试题(总第40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.______usually helps to induce air movement to assist combustion.A. Cylinder coverB. Main bearingC. The exhaust valveD. The piston movement2.The mechanical efficiency of an engine is always less than 100% ______lossesoccurring in the form of friction.A. becauseB. sinceC. due toD. owing3.The exhaust ports are located around the lower part of the cylinder liner, ______theproducts of combustion are driven by scavenging air.A. in whichB. by whichC. through whichD. from which4.The third engineer took the ______and checked the tank table in the office andrecorded all relevant data, as well as calculated the bunkering.A. water levelB. sump levelC. ballast tank levelD. ship's trim5.The lubricating pipes and ducts should be blown out with ______.A. the atmosphereB. the fresh waterC. the compressed airD. the chemical compounds6.______neutralizes the acid conditions and ______cleanses the rings and grooves.A. The detergency/the alkalinityB. The alkalinity/the detergencyC. The inhabitant/ the waterD. The additives/the distilled water7.If the engine does not start on air, it may be due to______.A. low compression of the fuel pumpsB. incorrect timing of fuel pumpsC. the starting air valves stuckD. air-locks in fuel oil pipeline8.______device is provided to prevent starting air from being admitted to thecylinder before the reversing is completed.A. An automaticB. A transmissionC. A self-regulatingD. An interlocking9. A reduction in load on a diesel engine results in ______of speed of the crankshaft.A. a reductionB. an increaseC. an outingD. a downwards10.Fuel injection uses the jet pump system and a Woodward type hydraulic ______isused to control engine speed.A. controllerB. governorC. instrumentD. apparatus 11.The overspeeding of the diesel engine driving an electric generator could cause______.A. low voltage trip to tripB. reverse power trip to tripC. damage to windingsD. excessive exhaust temperatures12.Any carbon built up on surfaces must be washed away by ______additives andheld in suspension by a ______additive.A. dispersant /detergentB. detergent/dispersantC. dispersant /dispersantD. detergent/detergent13.While flowing through the volute in a centrifugal pump, part of the ______energyof the liquid is converted to ______energy.A. kinetic/pressureB. kinetic/essentialC. pressure/kineticD.pressure/height14.Gear pumps are ______because they discharge a near constant amount of liquidregardless of pressure.A. negative displacement typeB. turbine typeC. positive displacement typeD. mixed-flow type15.Operating a rotary pump at speeds in excess of design requirements couldcause______.A. decreased clearances between rotating partsB. decreased slippage to the suction side of the pumpC. air binding in the discharge portsD. erosion and excessive wear16.The fire pumps must be capable of delivering a total quantity of water at a definedhead , not less than______of the total bilge pumping capacity.A. one-thirdB. two-thirdsC. one-fourthD. two-fourths17.The bilge system has been performing well; however, the aft starboard engineroom bilge-well suddenly fails to be pumped out. Which of the following should be done first to determine the cause?A. Open the bilge pump for inspection.B. Remove each of the manifold valves.C. Remove only the manifold valve to the affected bilge-well.D. Attempt to pump out another bilge well to determine if the entire system isaffected.18.Which of the following statements describes one of the functions of the ballastsystem?A. To permit flooding of any fuel oil storage tank on any class of ship.B. To use it as a secondary service system.C. To store reserve feed or potable water for extended cruises.D. To stabilize the ship by flooding certain designed tanks with seawater.19.If an operating auxiliary boiler has a water pH reading of 7, you should ______.A. bottom blow the boilerB. treat the water with caustic soda1C. treat the water with chemical scavengersD. reduce the water alkalinity to recommended readings20.Where tanks are arranged for either oil or ballast ______must be fitted in thepipeline.A. a change-over chestB. a head tankC. a emergency bilge pumpD. an aircooler21.The most common cause of scale formation in an auxiliary boiler is ______.A. concentrations of calcium sulphate in the boiler waterB. fuel oil in the feedwaterC. improper treatment of the feed water with calcium sulphateD. excessive feed water alkalinity22.The ______of the gravity disc is too big. It cause oil to flow through the wateroutlet. We changed the disc and no oil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder23.Oil water separators are used to ensure that ships don't discharge oil when______bilge water.A. to pump offB. being pumpedC. pumping outD. it pumping out24. A high rate of separation between oil and water is favored by______.A. large size of oil globuleB. low temperature25. C. high viscosity D. high flow rate26.Medium speed engines have a ______power to weight ratio than the slow speedtwo strokes, but due to the higher speeds tend to have ______maintenance intervals.A. higher/reducedB. higher/increasedC. lower/reducedD. lower/increased27.Oil Record Book Part I shall be provided to every oil tanker of 150 tons grosstonnage and above and every ship of 400 tons gross tonnage and above, ______oil tankers, to record relevant machinery space operations.A. as well asB. as long asC. rather thanD. other than28.It is important with all hydraulic systems to ensure that interlocking arrangementsprovided for pump or motor control levers are before the pump driving motor can be started.A. in the port positionB. in the starboard positionC. in the neutral positionD. to be dismantled29.The hand steering is a method by which the motion of the rudder is controlledwith______.A. a motor-driven steering wheelB. a pneumatic steering wheelC. a hand-driven steering wheelD. an electric steering wheel30.With reference to operating a four-ram steering gear system under emergencyconditions, which one of the following statements is incorrect ?A. Only one pump should be used at any timeB. The ship speed should be reduced to 70% of the normalC. Watch keeping of the steering gear should be increasedD. Limitations of the steering gear should be logged but the bridge need not beinformed31.Which of the following problems can result in below normal pressure in theintercooler of an operating low pressure air compressor?A. Defective pressure pilot valveB. Defective receiver relief valveC. Leaking intake valves on the high pressure cylinderD. Leaking discharge valves on the low pressure cylinder32.The air charge leaving an intercooler, or after-cooler of an air compressor can beexpected to be __.A. superheatedB. super-cooledC. at or below the dew pointD. all of theabove33.Open the ______of inter cooler before starting an air compressor.A. cylinder coverB. cooling waterC. oil cupD. drain valve34.Sludge may form in the crankcase of an air conditioning compressor as a resultof______.A. bubbling refrigerantB. overheating and oxidationC. lowered operating temperaturesD. reducing the cloud or flash point35.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 waterfailure switch36.Which of the statements listed concerning heat transfer is correct?A. Heat is always transferred at a constant rate.B. Heat transfer rate increases as temperature difference increases.C. The rate of heat transfer is not affected by temperature difference.D. The high temperature region is known as a heat sink.37.The purpose of the low pressure cutout switch is to______.A. maintain liquid refrigerant at the suction of the compressorB. maintain a preset suction pressure to the compressorC. start and stop the compressor at preset operating pressuresD. operate at minimum efficiency38.When a refrigeration compressor is in the 'off' cycle, the thermal expansion valvewill______.A. always be wide open when the compressor restartsB. continue to operate as if the system were in operationC. remain open until evaporator pressure equalizes, then close until the compressorrestartsD. always be completely closed until the compressor restarts239.The star formation is most commonly used and requires ______on the alternator.A. one slip-ringB. two slipringsC. three slipringsD. four sliprings40. A constant output voltage from an AC generator is maintained by the ______.A. prime mover governorB. exciter generatorC. voltage regulatorD. reverse power relay41.Prior to any overhaul work on electric equipment, it is important to ensure thecircuits are______.A. liveB. deadC. excitedD. on line42.Which of the following should be the FIRST step in removing a generator fromparallel operation?A. Trip the generator off the switchboard.B. Turn off all electrical equipment.C.Remove the load from the … offgoing' generator.D. Increase the cycles of the generator staying on the line.43. A … dead front' switchboard is one ______.A. without switches on itB. with insulated switches and no exposed terminalsC. without circuit breakersD. without safety hand rails nor rubber mats44.In ______the control action is independent on the output.A. a closed loop control systemB. an open loop control systemC. a boiler control systemD. a steering gear automatic control system45.Every precaution must be taken to avoid ______.A. sparking being taking placeB. to spark taking placeC. sparking to be taken placeD. sparking taking place46.The ______is used to measure the volume of a liquid or gas through a pipelinewithin any given period of time.A. flowmeterB. viscometerC. micrometerD. feeler47. A salinity indicator is used to determine the ______.A. cause of salt contaminationB. location of salt water contaminationC. chemical makeup of feed-waterD. level of alkalinity in condensate48.In order to accurately measure very low pressures, which of the instruments listedshould be used?A. Compound gageB. Bourdon tubeC. ManometerD. Deadweight gage49. 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. all of the above50.The main difference between a motor control circuit containing low voltageprotection and low voltage release is that the latter contains______.A. a magnetic operating coilB. normally open line contactsC. thermal-overload protectionD. a momentary-contact start button51.If the engine ______for a long period, there will be a danger of frost.A. must stand inoperativeB. has to stand inoperativeC. must be stood idleD. will stand idle52.If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed,ignition may be delayed because the ______.A. cylinder compression pressure may not be high enoughB. cylinder compression temperature may be too highC. fuel oil injection pressure may not be high enoughD. scavenge and purge process is incomplete53.Improper cooling of a diesel engine cylinder liner due to the accumulation of scaledeposits, may cause______.A. low compression pressureB. increased piston wearC. increased cylinder lube oil consumptionD. poor contact between compression rings and liner54.Poor combustion in a diesel engine can be caused by______.A. high compression pressureB. low intake air temperatureC. low exhaust pressureD. high scavenge air temperature55.High exhaust temperature and black smoke exhausting from an auxiliary dieselengine can be caused by ______.A. engine overloadB. low combustion temperatureC. plugged fuel nozzle holesD. excessive compression pressure56.In a diesel engine, excessive cylinder liner wear will cause ______.I. increased blow-by II. wear between the piston ring and grooveA. I only is correctB. II only is correctC. both I and II are correctD. neither I or II are correctbustion knock can occur in the cylinders of a diesel engine under anycondition permitting ______.A. a shortened ignition delay periodB. a lean fuel/air mixtureC. excess fuel in the combustion chamberD. rapid vaporization of injected fuel droplets58.The load on the crosshead pin is always______, so it is the ______half of thebearing which is subject to wear.A. upwards/topB. upwards/bottomC. downwards/topD. downwards/bottom59.If the action of the engine indicates that some of the cylinders are not firing, theones affected may be determined by watching ______.3A. the bad smokeB. the smoky exhaustC. the exhaust temperatureD. the peak pressure60. A centrifugal pump can‟t supply water after starting. You should firs tly check ___.A. discharge valveB. power supplyC. packing glandD. bearing lubrication61.Which of the motors for the devices listed below is fitted with an instantaneous(瞬时的) overload relay?A. FanB. PumpC. WinchD. Machine tool62.If ______are taken at regular intervals, any unequal distribution of load will beeasily found out.A. indicator diagramsB. nomo-gramC. temperature readingsD. pressure readings63.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 tanks64.The resistance of electric wire will decrease as its ______.A. length increasesB. cross-sectional area increasesC. temperature increasesD. percent of metallic purities increases65.It is well known that the wh ole power distribution of the ship‟s electrical servicesmainly depend on the______.A. sub-boardsB. main switchboardsC. emergency switchboardsD. distribution boards66.The Company should ensure that ______documents are promptly removed.A. absoluteB. updatedC. outdatedD. new67.You may improve a vessel's stability by ______.A. keeping the fuel tanks topped offB. increasing the free surface effectC. keeping the fuel tanks at least half fullD. keeping at least one fuel tank empty for slops68.The most common type of containment device for spilled oil on the water is the useof ______.A. strawB. boomsC. skimmersD. chemical dispersants69.We‟ve trie d many ways, but all in vain. Only in this way, ___the problem, I‟m sure.A. can we solveB. we can solveC. we will solveD. can be solved70.It was ______midnight that we removed the trouble and went back to our cabins.A. untilB. not untilC. not beforeD. not after71.The flash point of a petroleum product is an indication of its______.A. viscosityB. pour pointC. volatilityD. lower explosive limit72.If there has been a fire in a closed unventilated compartment it may be unsafe toenter because of ______.A. unburned carbon particlesB. excess nitrogenC. a lack of oxygenD. excess hydrogen73.Tell your men ______the rules and procedures of working when dismantling theequipment.A. not to go againstB.don‟t go againstC. not go to againstD. to not goagainst74.The minimum number and capacity of bilge pumps and fire pumps and theirdistributing within the ship is governed by______.A. Classification Society RulesB. National requirementsC. The IMO International Convention for the Safety of Life at SeaD. All of the above.75.The SOLAS Convention in its successive forms is generally regarded as the mostimportant of all international treaties concerning the ______of merchant ships.A. pollutionB. economizationC. safetyD. efficiency二. 关联题（关联题题干下有4个小题，每小题4个选项）The windlass is the usual anchor-handling device where one machine may be used to handle both anchors. A more recent development, particular on largervessels, is the split windlass where one machine is used for each anchor.The rotating units of a split windlass consist of a cable lifter with shaped snug to grip the anchor cable, a mooring drum for paying out or letting go of mooringwires and a warp end for warping duties. Each of these units may be separatelyengaged or disengaged by means of a dog clutch, although the warp end is oftendriven in association with mooring drum. A spur gear assembly transmits the motor drive to the shaft where the various dog clutches enable the power take-off.Separate band brakes are fitted to hold the cable lifter and the mooring drum when the power is switched off.The cable lifter unit is mounted so as to raise and lower the cable from thespurling pipe, which is at the top and the chain or cable locker.Anchor capstans are used in some installations where the cable lifter rotatesabout a vertical axis. Only the cable lifter unit is located on deck, the drivingmachinery being on the deck below.76.According to the passage, the rotating units of a split windlass don‟t include______.A. a cable lifterB. a mooring drumC. a chain lockerD. a warp end77.The word “assembly” in the sentence “ A spur gear assembly transmits the motordrive to the shaft where the various dog clutches enable the power take-off.” is as the same meaning as ______.A. unitB. shaftC. dog clutchD. spurling pipe78.One of the functions of a dog clutch is ______.A. to transmit the motor drive to the shaft4B. to hold the cable lifter and the mooring drum when the power is switched offC. to engage or disengage the rotating units of a split windlass separatelyD. to handle both anchors79.Which of the following statements is correct ?A. A more recently development, particularly on larger vessels, is the splitwindlass where one machine is used to handle both anchors.B.The word “machine” in the passage refers to the windlass.C. Anchor capstans are used in some installation where the cable lifter rotatesabout a horizontal axis.D. Both the cable lifter unit and the driving machinery are located on deck.三、中译英（共2题，请将答案写在答题纸上）79. （修理单）辅助锅炉水空间需采用化学方法除去水垢，如发现有烧坏的管子则换新，安全释放阀调至设定值。
轮机英语试题及答案
轮机英语试题及答案一、选择题（每题1分，共10分）1. What is the term for the main engine of a ship?A. PropellerB. RudderC. EngineD. Boiler2. Which of the following is not a type of marine fuel?A. DieselB. BunkerC. GasolineD. Heavy Fuel Oil3. What does the abbreviation "SOLAS" stand for?A. Society of Legal and Administrative StudiesB. Safety of Life at SeaC. Special Operations and Logistics AssistanceD. Ship Operating and Lifesaving Systems4. What is the purpose of a ship's anchor?A. To propel the shipB. To steer the shipC. To secure the ship when not in motionD. To lift heavy objects5. The term "deadweight tonnage" refers to:A. The weight of the ship's hullB. The maximum weight a ship can carryC. The weight of the ship's cargoD. The weight of the ship's fuel6. What is the function of a ship's bilge?A. To store fresh waterB. To collect and pump out water from the hullC. To provide buoyancyD. To store oil7. Which of the following is a navigational instrument?A. CompassB. Engine roomC. LifeboatD. Anchor8. What is the term for the lowest part of a ship's hull?A. DeckB. HullC. KeelD. Stern9. What does "GM" stand for in ship stability calculations?A. Gross MassB. Gross TonnageC. Gantry MastD. Metacentric Height10. The International Maritime Organization is abbreviated as:A. IMOB. ITUC. ISOD. ILO二、填空题（每题1分，共5分）11. The main components of a ship's propulsion system include the ______, propulsion shaft, and propeller.12. The ______ is the person responsible for the operation and maintenance of the ship's engine.13. The term "freeboard" refers to the distance between the waterline and the ______ of the ship.14. A ship's ______ is the area where the crew lives and works.15. The ______ is a document that provides information about the ship's safety equipment and procedures.三、简答题（每题5分，共20分）16. Explain the difference between a cargo ship and a tanker.17. Describe the role of the International Maritime Organization (IMO) in maritime safety.18. What are the main factors considered when designing a ship's hull?19. Discuss the importance of regular maintenance of a ship's engine.四、论述题（每题15分，共30分）20. Discuss the environmental impact of maritime transportation and how it can be mitigated.21. Analyze the challenges faced by a ship's crew during a long voyage and how they can be addressed.五、翻译题（每题5分，共10分）22. Translate the following sentence into English: “船舶的稳性是指船舶在受到外力作用时，能够保持平衡的能力。
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。
海事局海船船员适任证书全国统考试卷：41832
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：主推进动力装置试卷代号：832适用对象：750―3000KW船舶轮机长/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：本试卷试题均为单项选择题，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。
每题1分，共100分。
1. 通常船用柴油机的排气温度的最高值应控制在______。
A.＜550℃B. 600～700℃C. 800～900℃D.＞1000℃2. 提高柴油机功率的途径之一是______。
A. 提高压缩比B. 采用增压技术C. 提高进气温度D. 提高燃油质量3. 在缸套表面承受的机械应力分析中，正确的是______。
A. 内表面承受的切向应力最大，径向应力最小B. 内表面承受的切向应力最小，径向应力最大C. 内表面承受的切向应力最大，径向应力最大D. 内表面承受的切向应力最小，径向应力最小4. 缸套外侧冷却水腔中的死水区周围产生的腐蚀损坏是______。
A. 电化学腐蚀B. 化学腐蚀C. 空泡腐蚀D. 氧浓差腐蚀5. 活塞顶烧蚀的主要原因是______。
A. 雾化不良B. 喷油正时不当C. 油束射程过大D. 频繁变负荷6. 中、高速强载筒形活塞式柴油机连杆的材料与杆身横断面通常是______。
A. 合金钢、工字形断面B. 优质碳钢、工字形断面C. 优质碳钢、圆形断面D. 合金钢、圆形断面7. 为改善四冲程柴油机连杆大端螺栓工作的可靠性，常采用______。
A. 加粗螺栓杆身直径以提高抗疲劳强度B. 采用柔性结构以提高抗疲劳强度C. 粗牙螺纹连接以提高螺纹承受应力的能力D. 多加装防松垫圈8. 柴油机曲柄臂与曲柄销的抗弯强度比较是______。
A. 曲柄臂比曲柄销弱B. 曲柄臂比曲柄销强C. 两者相同D. 随曲轴结构而定9. 正置式主轴承与倒挂式主轴承比较，其特点错误的是______。
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!。
轮机三管轮考证英语44期试题加答案.docx
屮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.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 theimal efficiency D・ Volumetric efficiency3.The ignition quality, of diesel fuel oil is indicated by the ____ ・A.Specific gravityB. Cetane numberC. Viscosity D・ 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.Viscosity B・ Twisting moments C・ Inertia D・ Thermal expansion6・ Each cylinder is closed at the top by a ___ ,made of a special heat-resistant steel.A.Cylinder linerB. Coupling flange C・ Cylinder cover D・ Piston7.The amount of fuel delivered by a helical plunger type fuel injection pump is controlledby ______ •A.Rotation of the pump plungerB. Rotation of the pump barrelC・ Varying the pump supply pressure D・ Varying the pump return pressure8.In a diesel engine lube oil system, which of the following parts should be lubricated first?A.Camshaft bearingB. Main bearing C・ Piston crowns D・ 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 velocity is in creased in the ____ .A.Inlet nozzle ring B・ Stationary diffuser passagesC・ Compressor outlet volute D. Rotating impeller vanes11 ・ Diesel engine cylinder air start valve timing is controlled by ___ ・A.Engine operating speed B・ An air manifoldC.A hydraulic distributorD. The air distributor12.If the compensating needle valve of a hydraulic governor is opened more than necessary 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 air reservoirs and airA.OpenB. closeC. DrainD. Vent15.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 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 ____ ・A. CompletedB. Carried outC. CleanedD. SteamedWhen 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 pressure D・ Inciease the air supply19.If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause 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 pump D・ 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, youshould _____ •A. Packing glandB. Mechanical sealsC. Lantern rings D・ Wearing rings23.Which of the listed conditions can lead to cavitation in a centrifugal pump?A.Vapor 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 ____ ・A. Compressor B・ Condenser C・ Throttle valve D. Evaproator25.The temperature at winch water vapor in the atmosphere begins to condense is called theA. Dew point temperatureB. Condensation temperatureC. Psychometric temperatureD. Absolute humidity temperature26.In an air conditioning system, moisture is removed from the air by ___ ・A. Filters B・ Separator C. Ducted traps D・ 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 point2& 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. Extract C・ Increase D. 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 water D・ By mixed water30.Which is the pollution prevention equipment?A. Booster pump B・ Evaporator C・ Incinerator D. Cooler31.The __ is used to bum oil sludgeA. ClarifierB. Oily water separator C・ Incincrator D. 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, theA.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 brine is usually defined as _________ •A. Dehydration B・ Condensation C・ Evaporation D. Dissolution36.What type of valve is used to direct the flow of hydraulic is controlled by varying the position of the _____A. Relief valveB. Direction control valveC. Stop valve D・ Pressure control valve37.The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the ____ .A. Slide blockB. Tilting boxC. PintleD. Reaction ring3& The drive motor will have a brake arranged to fail-safe,i.e.it wild 〜the load if power fail or________ machine is stopped・A. LiftB. PutC. TakeD. Hold39.On tank vessels with an electrically-driven capstan, the motor should be meggered periodically to test _______ .A.Insulalion 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 description of a simple ______ ■A. Magnetic shieldB. ElectromagnetC.Piezoelectric device D・ Electromagnetic domain43.The operation of ____ two alternators requires the voltages to be equal and also in phase.A. Paralleling B・ Series-mounting C. Running D. Controlling44.The power factor of an AC generator operating singularly is determined by the _________ ・A.Connected loadB. Prime mover speedB.C. Field excitation D. Generators rated voltage45.A generator is prevented from becoming motorized by the used of a/an ____ ・A.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・A. UsuallyB. Commonly C・ Exceptional D. 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.4& 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（名乌）□A. Increase in resistance with increased temperatureB・ Increase in resistance with decreased temperatureC・ Decrease in resistance with increased temperatureD.Contactors are made from silver and relays are made from copper.50.Which of the following statements represents the main difference between a relay and a contactor?A.Contactors control current and relays control voltageB.Relay is series connected and a contactor is parallel connectedC.Contactors can handle heavier loads than relaysD.Contactors are made from silver and relays are made from copper51.The energy consumed by an AC motor, as strictly reactive power.is______ ・A. Used to do mechanical workB. Used to establish the magnetic field of the motorC.Low operating temperatureD. The time period since the last cleaning52.The need for insulation cleaning may be determined by _______ ・A. Visual inspection for dirt accumulationB. High megger readingsC.Low operating temperatureD. The time period since the last cleaning53.Before starting the engine, the air bottle should be _______ •A. Pumped upB. LoadedC. DischargedD. Closed54.At the beginning of the watch the current operational parameters and the condition of all machinery should be verified and also the log readings should correspond with those ______ ・A. Noted by the bridge officer B. Told by last duty engineerC. Observed D・ In the instruction manual55.^movement of engine no longer required "means”____ nA.stop engineB. No engine revolutionsC. Stand-by engineD. Finished with engine56.Which of the listed conditions can be considered as the stogie geratest cause of accidents?A. Speed engineB. Excessive knowledge or skillC. Human errorD. Excitement57.A class ' C ' fire would occur in _______ .A. Bedding B・ Pipe insulation C. Paint D. A generator5& If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST ____ .A.Notify. The engineer on watchB.Isolate and secure the pipingC.Throw sand on the fireD.Extinguish the fire using a combination nozzle with applicator59.At the earliest indication of fire aboard your vessel, you must FIRST _____ ・A. Locate the fireB. Determine which type of fire is burningC. Sound the alarmD. Fight the fire60.If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of _______ .A. Unburned carbon particlesC ・ Lack of oxygen61. If you observe any situationwhich presents a safety or pollution hazard during fuel transfer operations, which of the following actions should be taken FIRST?A. Close the calves at the transfer manifoldB ・ Notify the person in charge of the shore facilityC ・ Stop the transfer operationD. Sound the fire alarm62. Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible ________ .A. Deflection B ・ Discrepancy C ・ Error D. Tolerance63. ____ is an opening for supplying seawater to condensers,pumps,etc.located in the hull below the waterline and having means for the attachment of the associated piping.A. Sea chestB. ScupperC. ScuttleD. Sea port64. The additional mark ______ in the classification certificate for machinery means propulsion apparatus is remotely control station is unmanned periodically ・A. BRCB. MCCC. AUT-0D. AUT-165. 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 th date of issue D ・ Four years from the date of issue66. Which one is the 'clear ground ，for a more detailed inspection?A. Paint peeling off the uptakeB. No operation procedures for the oil separatorC. One of ship's certificates requiredD. Damaged sanitary pump67. The port of ships 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 boot 〜C. Oil record bookD. Muster list6& The _____ convention is the first to establish basic requirements on training,certification and watch-keeping for seafarers on an international level.A. STCW78B. STCW95C. SOLAS74D. SOLAS8869. When the machine spaces are in the periodic unmanned condition, ______________ shall be immediately available and on call to attend the machine space ・A. The chief engineerB ・ The designated engineer from shipyardC. The designated duty officer in charge of the engineering watchD. The designated surveyor from classification society70. The officer in charge of the engineering watch hall 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 mode C ・ Remote mode D. Follow-up mode B. Excess nitrogen D. Excess hydrogen71 ・ Small oil spills on deck can be prevented from contaminating any waters by _____ .A・ Plugging all scuppers and drains B. Placing floating booms around the shipC. Regularly emptying all drip pans D・ Thoroughly draining all bunkering hoses72.When off loading garbage to another ship ,your records must identify that ship by name andA. Home portB. Operator's name of recordC- Official number D. Masters name73.The main objective of the SOLAS convention is to specify __________ for the construction, equipment and operation of ships, compatible their safety・A. At most referencesB. At least referencesC. Maximum standardD. Minimum standards74.The objectives of the ISM code are to ensure _______ •①safety at sea ©prevention of human injury or loss of life ③avoidanee of damage to the marine environment and to propertyA.①B.①②C.②③D.①②③二、关联题(关联题题干下有四个小题，每个小题四个选项)The main starting valve(automatic valve) is operated by a pneumatic actuator, and similar actuator controls are fitted for slow turning and to the timing valves. The main starting valve can be locked shut and this must be done before the engine mining gear is engaged. When this valve is open, air passes through a non-return valve and flame arrester to the main manifold supplying pressure to the cylinder valves.one of which is fitted to each cylinder of the engine・The cylinder air start valves are normally held closed by a compression spring together with cylinder pressure acting over the calve lid.air from the manifold enters these valves where it forms a pressure balance between the underside of the valve lid and a balance piston of equal area on the vale spindle. Consequently this does not cause the valve to open.cylinder valves are opened when operating air, transmitted from the distributor, applies pressure to the larger operating piston on the valve spindle. As the valve is force open , starting air from the manifold enters the cylinder, applying pressure on the piston and causing the engine to rotate in the corresponding direction. To close the cylinder calves the connection from the distributor is opened to atmosphere, allowing the spring to close the valve and return the operating piston.75.The timing valves(in the first paragraph) refer to ____ .A. The valves for slow runningB. Fuel valvesC. The distributorD. Not mentioned76.After the main starting valve opens, air will not supply to ________ .A. The flame arrester B・ Each cylinder valveC.Anon- return valveD. A pneumatic actuator77.The balance piston used on a cylinder air start valve is to ________ ・A.In crease acting areaB.Keep pressure balance and help the valve close before operating air appliedC・ Increase the force and help the valve open after the operating air appliedD.Cause the valve to open7& After the engine being started, the air in the distributor will ____ .A. Be vented to open airB・ Be leaded to the corresponding cylinderC・ Be trapped until engine stopsD.Return to air reservoir三、中译英(共2题，请将答案写在答题纸上)79.1号重油分油机手动排渣后发生剧烈振动，经拆检清洗后装复，恢复正常分油工作。
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。
(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。
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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。