三管轮轮机英语大证考试真题40期

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甲类三管轮机英语考试真题

【单选】In some cases, when _____ exceeds a pre-set value ,the filter is automatically back flushed with air ,the displaced oil going to auxiliary drain tank where it is subsequently filtered and pumped back into the system A.the differential temperatureB.the differential pressureC.the temperature and pressureD.the pressure【单选】'Insufficiency of manning or insufficiency of certification of seafarers' is an identification of a/an ______.A.substandard shipB.standard shipC.over-standard shipD.reference ship【单选】'Loop,' 'uniflow,' 'crossflow,' and 'return-flow' are terms used to describe various types of ______.A.control air circuitsB.superchargingC.turbochargersD.scavenging【单选】 A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an ______.A.rotorB.statorC.exciterD.armature【单选】 A centrifuge arranged to separate two liquids is known as _____.A.an oily water separatorB.a purifierC.a centrifugal compressorD.a clarifier【单选】 A circuit breaker and a fuse have a basic similarity in that they both ______.A.can be reset to energize the circuitB.should open the circuit when overloadedC.will burn out when an over current flow developsD.should short the circuit when overloaded【单选】 A circuit breaker differs from a fuse in that a circuit breaker ______.A.melts and must be replacedB.is enclosed in a tube of insulating material with metal ferrules at each endC.gives no visual indication of having opened the circuitD.trips to break the circuit and may be reset【单选】 A circuit breaker is ______.A.a distribution device B.a lighting equipmentC.the indicating instrumentD.an isolating switch【单选】 A combination combustible gas and oxygen indicator is an instrument that measures the _____ of both combustible gas and oxygen; each is indicated on a separate binationsC.concentrationD.filters【单选】 A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an ______.A.double-acting engineB.opposed pistons engineC.single-acting engineD.horizontal acting engine【单选】 A fire involving aluminum powder would be a class _________. A.'A' fireB.'B' fireC.'C' fireD.'D' fire【单选】 A hydraulic motor may be driven by ______.A.an electric motorB.a diesel engineC.a compressorD.oil【单选】 A marine diesel engine is started by______.A.supplying high pressure oil into a hydraulic motorB.supplying high temperature air into the cylinderC.supplying high pressure air into the cylinderD.electrical igniting【单选】 A positive displacement pump is that where the volume of the pump chamber is alternately increased to ___ and then decreased to ___. A.draw the liquid in / force the liquid outB.force the liquid out / draw the liquid inC.suction/drawD.deliver/outlet【单选】 A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to ______.A.feel the high pressure fuel lineB.check the cylinder exhausts for white smoke frequentlyC.check the cylinder exhaust temperatureD.isolate each cylinder and inspect the injector【单选】 A segregated ballast system is a system where ______.A.all ballast is processed through the oily water separatorB.ballast is taken on and discharged through a separate main deck riserC.ballast and cargo tanks are separated by cofferdamsD.all ballast lines, tanks, and pumps are independent of those used for oil【单选】 A supercharged diesel engine, when compared to a similar naturally aspirated diesel engine, will develop an increase in ______.A.ignition lagB.engine horsepowerC.lube oil system pressureD.specific fuel consumption【单选】 A viscosity regulator used for an engine is usually provided in order to _____ for an engine burning heavy fuel oil.A.regulate the fuel supplyB.maintain a constant fuel viscosity at the fuel valvesC.maintain efficient coolingD.alter the fuel density【单选】According to STCW, the abilities specified in the standards of competence are grouped as seven functions at three levels of responsibility, which of the following is not one of the three levels?A.Navigational levelB.Management levelC.Operational levelD.Support level【单选】According to the MARPOL CODE, glass, metal and paper materials should ______.A.never be discharged into seaB.be discharged beyond 12 nm from nearest landC.be discharged limited in 12 nm from nearest landD.be discharged to sea【单选】According to the SOLAS convention, the bilge water system ______A.The bilge pump must connect the bilge well suction directlyB.should not pump out the water accumulated in the cargosC.should not be used for emergency drainage in case of ship collisionD.should be connected to the fire fighting system directly【单选】After 'F.W.E.' is given, the air system is shut down, the _____ gear put in, all drains and indicator cocks opened, and the cooling water kept running.A.steeringB.timingC.turningD.running【单选】After 'finished with engine', which of the following cannot be shut off by the duty engineer ?A.fuel oil booster pumpB.the main starting valveC.the sea chestD.the main cooling sea water pump【单选】After taking on fuel oil, the hoses should be disconnected and ______.A.draped over the fantail to dry outB.drained over the side and washed outC.drained into the bilges and washed outD.drained into buckets【单选】Air chambers are usually fitted to reciprocating pumps in order to ___.A.increase discharge pressureB.increase suction vacuumC.develop pulsation flowD.keep a steady rate of flow【单选】All crew's assigned emergency stations can be found on the ship's ______.A.muster listB.certificate of inspectionC.clearance papersD.permit to proceed【单选】All details of fuel bunkering or slop disposal must be entered in the _____.A.rough logB.engine room log bookC.oil record bookD.smooth log【单选】An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every ______.A.weekB.2 weeksC.monthD.3 months【单选】An incinerator auxiliary burner can not be ignited. It is NOT caused by______.A.carbon deposits on the electrodesB.defective atomizerC.low oil pressureD.too much water in the oil sludge【单选】An incinerator auxiliary oil-fired burner is used to ignite ______.A.the solidwaste or the oil sludgeB.the solid waste onlyC.the oil sludge onlyD.neither the solid waste nor the oil sludge【单选】Anchor capstans are used in some installation where the cable lifter rotates about a ______. A.horizontal axisB.crankshaftC.vertical axisD.camshaft【单选】As for oil separator, ______contributes to poor separation efficiency and carries over of water into the clean oil outlet.A.A too big gravity discB.A too small gravity discC.The high oil temperatureD.The high speed motor【单选】As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.A.increaseB.decreaseC.remain unchangedD.be greatest at dew point【单选】Before doing any work on a hydraulic system equipped with accumulators, you should ______.A.drain the accumulators and purge with oxygenB.bleed off all stored energy from the accumulators completely C.charge the accumulators to prevent system energy lossD.pump the hydraulic fluid into the accumulators to prevent fluid loss【单选】Before starting the engine, the air bottle should be ______.A.pumped up B.loaded C.discharged D.closed【单选】Biological sewage water treatment plant work on the_____.A.heating processB.settling processC.aeration processD.centrifuging process【单选】Cargo handling unit is rated according to the _____ to be lifted.A.cargo craneB.jibC.safe working loadD.oil pressure【单选】Centrifugal pumps, used to handle hot liquids, must have a minimum flow through them under all operating conditions. This flow serves to ______.A.prevent overheating and damage to pump rotating parts due to rubbingB.maintain the net positive suction head of the pumpC.maintain hydraulic differential in the pump impeller passagesD.purge the pump of non-condensable vapors and gases【单选】Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and _____ in size.A.expand B.extract C.increase D.decrease【单选】Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by ______.A.cylinder pression ringsC.piston skirtsD.oil rings【单选】Cooling of engines is achieved by circulating a cooling liquid around internal ______ within the engine.A.airB.passagesC.pipesD.means【单选】Dual electro-hydraulic steering units usually operate ______.A.with both pumps on line at the same timeB.with one pump on standbyC.with the follow-up gear disconnectedD.only when the rudder is moved amidships【单选】During ______ the gases are driven out of the cylinder by the piston.A.The suction strokeB.The compression strokeC.The expansion strokeD.the exhaust stroke【单选】During purification, if the operating water tank is empty, which of the following malfunctions will appear?A.Some oil will flow from the water outlet of the separator.B.There will be some water in the purified oil.C.Some oil will flow from the sludge outlet of the separator.D.If discharging the sludge, there will be no flushing water.【单选】Each crank is made up of two crank webs joined by a common ______ to which the bottom end bearing is fitted. A.throw B.crankshaft C.crankpin D.crosshead【单选】Each cylinder liner on the marine medium speed engines _____. A.is usually cooled by sea water B.can be replaced when worn out C.is in direct contact with the water in the bore of the cylinder D.can't expand when heated【单选】Electric wires should have each feature of the following except ______.A.flame retardantB.moisture resistantC.oil resistant D.low conductivity【单选】Engine speeds at which resonance can occur are termed ______.A.maximum speedsB.full speedsC.sea speedsD.critical speeds【单选】Equal power factors on paralleled AC generators are maintained by an automatic ________.A.voltage regulatorB.reverse power relayC.reverse current ernor control switch【单选】Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _______.A.an air bound fuel systemB.damage to cylinder heads and pistonsC.excessive fuel injectionD.excessive air valve lift【单选】Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ______.A.prolong the ignition delay periodB.ensure the beginning of fuel injectionC.thoroughly utilize the air chargeD.allow controlled fuel combustion【单选】Fuel is ignited into a diesel engine cylinder by ______.A.a spark plugB.injectorsC.the heat of compressionD.increasing jacket water temperatures【单选】Full travel of the electronic governor actuator linkage must exceed the ______ travel of the engine fuel control to ensure that the engine fuel control is capable of moving from the 'off' position to 'full fuel'. A.minimumB.averageC.maximumD.half【单选】Heavy residual fuel oils are heated prior to centrifuging to ______.A.reduce fuel weightB.increase specific gravityC.separate fuel from lube oilD.reduce fuel viscosity【单选】How can the chance of contaminating hydraulic fluid be decreased when working on hydraulic systems?A.Clean the fittings before they are disconnected.B.Place drip pans under leaky fittings.C.Seal any cracks in lines with Permatex.D.Coat all threads with graphite oil. 【单选】ISM code has applied to the ships as follows exceptA.Passenger shipsB.Bulk freight vessels of 500 gross tons or moreC.Warship of 500 gross tons or moreD.High-speed craft of 500 gross tons or more【单选】If a cam-controlled engine has a normal injection pressure at rated speed, the injection pressure will be ______ at slow speed.A.a little lower B.a little higherC.too lowD.exactly the same【单选】If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST ______.A.secure the ventilationB.find a soda acid extinguisherC.shut off the fuel oil supplyD.secure the generator【单选】If an oil spill occurs on deck, you should ______.A.cover the area with foamB.cover the area with absorbent materialC.wash down immediately with a fire hoseD.wash down immediately with an oil dispersing solvent【单选】If found oil when we open low oil level plug of separator, it indicates _______.A.the separator is overloadedB.the monitor equipment of separator failsC.the discharge pump of separator can not workD.the temperature of oil water is low【单选】If the engine is at rest during maneuver for an extended period the engine should _______, of course, that navigational circumstances permit, before restarting on fuel.A.be turned on airB.be tried on powerC.be turned by the turning gearD.be tested on fuel【单选】If the pump for a hydraulic anchor windlass is overheating, the cause may be ______.A.increased pump speedB.excessive pump discharge pressureC.too low of a tilting box angleD.low pump speed【单选】If the sea water supply pressure for a diesel engine cooling system is below normal, you should check for a ______.A.broken thermostatB.clogged sea water strainerC.blown head gasketD.cracked head【单选】If the speed of a turbocharged diesel engine is maintained constant as the load on the engine is increased, the speed of the turbocharger will ______.A.decrease until the engine speed increasesB.increaseC.decreaseD.remain unchanged【单选】If you heard a 'crackling' noise in a centrifugal pump, the most probable cause of the problem would be ______.A.insufficient speedB.cavitationC.excess discharge pressureD.excessive net positive suction head【单选】Immediately after any diesel engine is started, the engineer should check the ______.A.crankcase pressureB.lube oil pressureC.saltwater pressureD.exhaust temperature【单选】In Maritime Labour Convention, hours of rest may be divided into no more than two periods, one of which shall be at least ___ hour in length, and the interval between consecutive periods of rest shall not exceed 14 hours.A.fourB.fiveC.sixD.seven【单选】In ___ pumps a closed discharge valve will cause bursting discharge pressure.A.centrifugalB.plungerC.injectorD.water【单选】In ______ the control action is independent of the output.A.a closed loop control system B.an open loop control systemC.a boiler control system D.a steering gear control system【单选】In a diesel engine cooling water system, a pH of 6.0 indicates a/an ______.A.slightly acidic conditionB.slightly alkaline conditionC.over-treatment of waterD.neutral condition of water【单选】In a general cargo crane, _____ is fitted to lift the cargo load.A.the slewing motorB.the luffing motorC.the hoisting motorD.the fan motor【单选】In a radial piston pump, reversal and control of fluid flow are accomplished by moving the _______. A.central valveB.radial plungerC.floating ringD.cylinder body【单选】In an air conditioning system, moisture is removed from the air by ______.A.filtersB.separatorsC.ducted trapsD.dehumidifiers【单选】In common rail engines, the fuel is ______ before is injected into the cylinders.A.stored in a common fuel lineB.pumped by the injection pumpC.at low pressureD.already atomized【单选】In some diesel engine designs, the injection of cylinder oil is timed to impinge when the piston is coming upward and only impinge on ______.A.piston skirtB.piston crownC.piston ring belt.D.cylinder ring belt【单选】In the Oil Record Book, a comprehensive list of operational items are grouped into operational sections. Each section is codified by a/an ______.A.numberB.abbreviationC.letterD.number、abbreviation and letter【单选】In the electronic governor actuator, the oil pressure is provided by a ______ pump driven by a shaft connected to the engine camshaft.A.servomotorB.hydraulic motorC.gearD.volute【单选】In the event of a small bunker oil spill on deck occurring while bunkering, youshould ______.A.wash down the area immediately with a fire hoseB.wash down the area with keroseneC.cover the area with absorbent materialD.cover the area with foam【单选】In the event of minor emergencies when the machinery spaces unattended, ______ will be informed of malfunctions in the machinery by his cabin monitor.A.the chief engineerB.the engineer on cabin watchC.the bridge officer on watchD.the master【单选】In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called ______.A.evaporationB.distillationC.dehydrationD.condensation【单选】Increasing the temperature of a fuel will _____ its viscosity, and vice-versa.A.increaseB.not changeC.reduceD.add【单选】It ______ for an emergency generator to require paralleling.A.is usual B.is not usualC.is necessaryD.is not impossible【单选】It is important to note that when an excessive amount of water is present in the fuel the temperature for centrifuging must be kept below ______, otherwise forming and agitation of the fuel takes place.A.the condensating point of waterB.the boiling point of waterC.the flash point of the fuelD.the flammable point of the fuel【单选】It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong direction. This would cause the pump ______.A.head capacity to improveB.discharge to be reversedC.efficiency to decreaseD.slippage to decrease【单选】Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by ______.A.permanent loss of pump suctionB.worn shaft sealsC.high level in the oil sumpD.low motor RPM【单选】Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an ______.A.over-speed tripB.audible/visual alarmC.the ships/boats general alarmD.reserve oil storage tank【单选】Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ______.A.air charge density becoming too highB.piston crown surfaces becoming too coldC.formation of excessive quantities of pression pressure being greatly reduced【单选】Maximum pressure readings should be taken when the engine is running on ______ as steadily as possible.A.half loadB.full loadC.average loadD.minimum load【单选】Motor controllers are seldom troubled with grounds because ______.A.the auxiliary contacts have a high resistance connectionB.the contactors and relays are mounted on a non-conducting panelC.the resistor banks are composed of individual series-connected unitsD.there are separate switches for the motor and the control【单选】Noxious emissions amount to 0.25～0.4 percent by volume of the exhaust gas, depending on the amount of ______ in the fuel and its lower heat value, and the engine type, speed and efficiency.A.carbonB.sulphurC.oxidD.water【单选】Over-greasing of ball bearings installed on pumps will result in ______.A.smoother pump operationB.overheating of the bearingC.reduced corrosion in the bearingD.increased pump capacity【单选】Owing to its __________, the low speed cross-head diesel engine is widely used on board ship as a main engine.A.smaller size and simple constructionB.long life, lower cost and reliabilityC.easier operation and managementD.simple construction and easier management【单选】Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ______.A.slightly less than the line frequencyB.the same as the line frequencyC.slightly greater than the line frequencyD.have nothing to do with the line frequency【单选】Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to ______.A.test the starting systemB.remove condensation from the cylindersC.check the compressionD.check for proper lube oil pressure【单选】Reheating a hardened component to a temperature lower than the hardening temperature and then cooling it is known as ______.A.low temperature hardeningB.case hardeningC.annealingD.tempering【单选】Remote control means that _____ .A.the system is manned manuallyB.the system is situated remotely from the operatorC.the system is controlled automaticallyD.the system is controlled from the bridge【单选】Restrictions occurring in the small orifices of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components【单选】STCW Convention describes that _____ are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room. A.available minimum requirementsB.available maximum requirementsC.mandatory minimum requirementsD.mandatory maximum requirements【单选】STCW Convention states that the officer in charge of the engineering watch is the _____ representative.A.ship-owner'sB.master'sC.chief engineer'sD.manager's【单选】Safe working conditions inside the crankcase are ______, especially for large bore engines where the components are quite heavy.A.reliableB.safetyC.easyD.important【单选】Seawater can be used for drinking ______. A.at a maximum rate of two ounces per dayB.after mixing with an equal quantity of fresh waterC.if gather during or immediately after a hard rainD.under no circumstance【单选】Smaller equipment may be supplied via ______ or miniature circuit breakers.A.exciters mutatorsC.fusesD.wattmeter【单选】The Abbreviation "ERM" in the Manila Amendments to the STCW Convention stands for ______.A.Engine Room ManagementB.Engine Resources ManagementC.Engineer Resources ManagementD.Engine-room Resources Management【单选】The ISM Code is a part of ____.A.SOLASB.MARPOLC.STCWD.Ballast Water convention【单选】The International Management Code for the Safe operation of ships and for Pollution Prevention is referred to as _______.A.ISM CodeB.IOPP CodeC.IMS CodeD.ISPS Code 【单选】The Port Authorities, in accordance with the IMO resolutions have been carrying out _____ to enhance safety of foreign ships.A.CPP B.FPP C.PSC D.FSC【单选】The SMS should provide for specific measures aimed at promoting the_____ of equipment or systems, the sudden operational failure of which may result in hazardous situations.A.visibilityB.abilityC.reliabilityD.capability【单选】The ______of the telemotor is mounted on the steeringgear.A.transmitterB.receiverC.pipesD.charging unit【单选】The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ______.A.American Petroleum B.Institute number viscosity index numberC.Seconds Saybolt Furol numberD.Seconds Saybolt Universal number【单选】The activated sludge strength should be checked at regular intervals, and it is good that the color of the aeration compartment water is ______.A.chocolateB.yellowC.blackishD.ivory-white【单选】The air distributor is conventionally driven by ______ and distributes ______ into each cylinder by certain sequence.A.camshaft / fresh airB.camshaft / starting airC.electronic motor which is controlled by a computer / fresh airD.electronic motor which is controlled by a computer / starting air【单选】The burning of ______ is a class‘C’fire.A.diesel oilB.magnesiumC.dunnageD.electrical insulation【单选】The capacity of the supply pump to the separator should correspond with the recommended throughput, or it must be adjusted without the risk of ______ formation.A.sludgeB.emulsionC.oil runoutD.deposit【单选】The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when ______. A.excessive loads are placed on the winch B.minimum pull is being exerted by the winch C.automatic operation of the winch is desired D.wire is being retrieved at the maximum rate【单选】The cooling water jacket is common to all the cylinders but there are often ______ to ensure that each cylinder receives the right amount and flow of water. A.dividing walls B.divided walls C.dividing liners D.divided jackets【单选】The descriptions about cetane number are TRUE except ______.A.Cetane number indicates ignition qualityB.The lower value the cetane number is of, the poorer the ignition quality will beC.Cetane number isn't the only measurement of ignition quality.D.Cetane number is measured by Redwood instrument【单选】The device that most commonly utilizes the principle of electromagnetic induction is the ______.A.diodeB.transformerC.transistorD.rheostat【单选】The engineer officer in charge of the watch shall ensure that ______are kept under constant surveillance.A.the devices and systems in chargeB.the communication devicesC.the main propulsion plant and auxiliary systemsD.the steering gear【单选】The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and ______.A.reduce water temperatureB.reduce water turbulenceC.provide an air cushionD.allow for an increase in water volume as the engine warms up【单选】The extended aeration process consists of _____ the liquor either by bubbling air through it or by agitating the surface.A.deoxygenating B.oxygenatingC.chemicalizingD.disinfecting【单选】The frequency output of an operating alternator is controlled by the ______.A.relative speed of the rotor polesB.number of turns of wire in the armature coilC.strength of the magnets usedD.output voltage【单选】The instrument which the emergency switchboard doesn't need is ______.A.ammeter B.voltageC.wattmeterD.synchronous meter【单选】The load sharing characteristics of two diesel generators operating in parallel are mostly dependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings【单选】The lubricating oil purifier may ______ oil from the drain tank and ______ the clean oil into the supply line.A.take; takeB.discharge; takeC.discharge; dischargeD.take; discharge 【单选】The magnetic field is provided by electromagnets so arranged that adjacent poles have ______.A.opposite polarityB.the same polarityC.negative polarityD.positive polarity 【单选】The main objective of ISPS Code is ______.A.to prevent the human injury and the loss of lifeB.to specify the measures to enhance maritime securityC.to avoid the damage to the environment, particularly to the marine environmentD.to ensure the compliance with conventions【单选】The main objective of the SOLAS Convention is ______.A.to specify minimum standards for the construction, equipment and operation of ships.B.to specify minimum standards for the training, certification and watch keeping for seafarers.C.to provide minimum standards for the operation of vessels.D.to tell the company how to run the business.【单选】The majority of automatic mooring winches are _____ to improve the backward efficiency of the gear train for rendering.A.spur gearedB.screw gearedC.worm gearedD.belt driven【单选】The most critical part of the bunkering operations, which can result in an oil spill, is when the ______.A.hose joints are made upB.tanks are being topped offC.system is being lined upD.pumping operation is first started【单选】The officer in charge of an engineering watch shall have the knowledge of ERM principles, including obtaining and maintaining ______.A.situational awarenessB.safety awarenessC.environmental awarenessD.anti-pollution awareness【单选】The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in _____ of operation are immediately implemented. A.ahead or astern B.fore or aft C.up or down D.speed or direction【单选】The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by ______.A.passing it through the expansion valveB.condensing refrigerant in the system condenserC.passing the gaseous refrigerant through the heat interchanger on the suction side of the compressorD.maintaining a high pressure on the system's receiver【单选】The operator of electrical motors should keep a constant check on the loads they carry because ______.A.low loads necessitate frequent insulation cleaningB.exceeding nameplate values shortens useful lifeC.energy is wasted if full loading is not utilizedD.power factor correction methods are load dependent【单选】The overcurrent relay _____ the motor contactor when the motor exceeds its rated current.A.connectsB.tripsC.foulsD.destructs【单选】The part of a fuse that melts and opens the circuit is made of ______.A.copper and antimonyB.steel and babbittC.aluminum or beryllium alloyD.zinc or an alloy of tin and lead【单选】The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to ______.A.eliminate the necessity for an oil scraper ringB.prevent side thrust and cylinder scoringC.prevent sludge and dirty oil from entering the crankcaseD.scrape oil。

轮机长，大管轮，三管轮，机工面试试题

轮机长，大管轮，三管轮，机工面试试题面试李XX老轨题目：1.简单描述最近一次PSC检查过程。

（英语）2.最近一次PSC检查出现何种缺陷？（英语）3.移动式灭火器种类有哪些？（英语）4.美国海域如何使用低硫油？（英语）5.上条船使用气缸油系统型号？气缸油种类？（汉语）6.主机换向失败报警如何处理？（汉语）7.换油过程需要注意哪些事项？换油过程中主机高压油泵或油头卡死如何处理？（汉语）8.PSC检查中可能会检查哪些轮机部项目？（汉语）9.救生艇检查中轮机项目有哪些？四种灯检查？（汉语）10.上条船运输过何种货物？装粮时轮机部需要做哪些工作配合？（汉语）（油舱加热温度不高于40度；货舱污水管路封死等）11.扫气口发黑可能是哪种原因？（汉语）12.如何进行风险评估?（汉语）（矩阵处理法：风险发生的可能性x风险事件致损程度=风险等级，相应的风险控制措施）面试叶XX老轨题目（两个面试的）：1、主机高压油泵在换油时，柱塞偶件咬合怎么办？两个面面试的，分别用汉语和英语；（汉语、英语）2、你做过的船中，你曾碰到过哪些故障是很难解决的或解决不了的？（汉语）3、自我介绍；（英语）4、加油前应准备哪些工作？（汉语）加油时，BDN有争议时，怎么解决？（英语）5、油水分离器PSC检查时，都检查哪些内容？（英语）6、隔离阀有什么作用？（汉语）7、主机增压器前温度一般是多少？增压器后一般是多少？前后那个高？（英语）（前300多、后200多）8、美国控制区如何换油？（汉语）9、如何控制油耗与速度？（汉语）10、叶老轨当时在医院，声音很吵，还有其他英语提问，一时想不起来。

面试谢XX老轨题目上山东德丰（三个面试的）：1. PSC主要检查哪些项目？（汉语/英语）2. 油水记录簿中C,D各舱柜要与哪个证书相符？（IOPP附页）3. TECHNICAL FILE记录哪些内容？（柴油机参数记录簿记录）4. 电喷主机与传统主机区别？5. 电喷主机管理重点。

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。

海船船员三管轮考试试卷及答案

海船船员三管轮考试试卷及答案一、单选题（共50题，共100分）1.按各类运输船舶的用途分类不属于特种货船的是______。

A.冷藏船B.煤船C.运木船D.汽车运输船2._____是属于按航行状态分类的船舶A.帆船B.水翼船C.渡船D.载驳船3.船舶按航区分类有 ______A.远洋船，沿海船B.军用船，民用船C.极区船，内河船D.A和C4._____是属于按推进动力分类的船舶A.螺旋桨船B.平旋推进器船C.喷水推进船=D.电力推进船5.现代柴油机动力装置的发展，在低油耗方面已非追逐的主要目标，代之以______成为重大研究课题A.低排放B.系列化C.大型化D.配套化6.目前海船上最广泛使用的主动力装置是______。

A.汽轮机B.柴油机C.燃气轮机D.汽油机7.20世纪50年代后，钢船建造的发展，均采用______。

A.铆接法B.焊接法C.铸造法D.锻造法8.下列关于船舶发展的说法中，错误的是______。

A.螺旋桨推进器是目前船用推进器发展的主要型式B.散货船是最早的专业化船舶C.船舶发展的突出特点是专业化、大型化、自动化D.最大船型的惊人发展，是战后油船发展的最大特点9.下列哪项不是目前船舶发展的突出特点 ______A.高效率化B.自动化C.大型化D.专业化10.______是属于按上层建筑型式分类的船舶A.远洋船，沿海船B.中机型船，尾机型船C.潜水船，气垫船D.三岛型船11.以下液压控制阀中属于压力控制阀的是______。

A.卸荷阀B.溢流节流阀C.液控单向阀D.低压选择阀12.关于先导型溢流阀的以下说法Ⅰ、作定压阀用时工作中是常闭的Ⅱ、作安全阀用时工作中是常开的A.Ⅰ正确B.Ⅱ正确C.Ⅰ、Ⅱ都正确D.Ⅰ、Ⅱ都不正确13.管理中空压机排气量减小的最常见原因是______。

A.气阀和活塞环漏泄B. 冷却不良C. 余隙增大D.安全阀漏泄14.对空压机着火爆炸原因的分析表明，下述说法中错的是（）A.含油积碳在高温下氧化放热会自燃B.自燃并不一定要气温达到油的闪点C.是否发生爆炸取决于排气温度是否达到滑油闪点D.长时间空转不安全15.初次起动非自动控制的空压机前无须做的是_____。

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。

中华人民共和国海事局第40期航海英语真题 (附答案)

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：航海英语试卷代号：903适用对象：无限航区、近洋航区二/三副(本试卷卷面总分100分，及格分为70分，考试时间100分钟)答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在相应位置上用2B铅笔涂黑．第1题至68题，每题1分，第69题至76题，每题1.5分，第77题至81题每题4分．一．单项选择题1．Y ou ______ in the wrong position obstructing other traffic．Y ou must heave up your anchor．A．have anchored B．have placed your anchorC．have moored your anchor D．have maintained your anchor2．The strongest of the natural fiber ropes is______．A．Nylon B．Dacron C．Manila D．Sisal3．On this chart only the principle ______ to navigation are shown．A．equipment's B．tools C．apparatus D．aids4．The ship can leave the port ______ the joint inspection．A．before B．after C．at D．from5．They ______ in the Engine Room in spite of the extremely difficult conditions．A．carried out B．carried on C．carried off D．carried forward6．Y ou are kindly ______ to issue the landing permits to the crew．A．request B．requesting C．requested D．be request7．Aircraft made forced ______ near position 23 o 32'N，110 o 13'E．A．striking B．landing C．grounding D．stranding8．A DECK，SPACE，AREA，ETC.，NOT PERMITTED TO BE ENTERED FOR SAFET Y REASONS defines ______．A．Restricted area B．Closed area C．Prohibited place D．Forbidden place 9．The following ______ is a standard phrase．A．Y ou may enter fairway B．Y ou should enter fairway C．ANSWER．It is permitted to enter fairway D．Y ou could enter fairway10．Strips of timber fixed to the frames of a ship, either in a horizontal or vertical direction, which keep cargo away from the sides of the ship, assisting ventilation and helping protect againsta build-up of moisture or condensation are termed as _______．A．frames B．shell plates C．bilge plates D．cargo batten 11．Which of the following best indicates how many tons of cargo a ship can carry？A．Bale cubic B．Deadweight C．Gross tonnage D．Net tonnage12．______refers to the angle between true north and the heading line of the vessel.A．True position B．True meridian C．True course D．True bearing13．A sheave is a ______．A．grooved wheel in a block B．line to hold a lifeboat next to the embarkation deck C．partial load of grain D．seaman's knife14．The wire ropes and blocks，or pulleys，on a ship are called ______．A．the apparatus B．equipment C．riggings D．fittings15．All vessel personnel should be familiar with the survival craft's ______.A. boarding and operating proceduresB. maintenance scheduleC. navigational systemsD. fuel consumption rates16．If a fire-fighting situation calls for low-velocity fog you would ______．A．order the engine room to reduce pressure on the fire pumpB．put the lever on an all-purpose fire nozzle all the way forwardC．attach a low-velocity fog applicator with the nozzle shut downD．put the lever on an all-purpose fire nozzle all the way back17．A fire has broken out on the stern of your vessel．Y ou should maneuver your vessel so the wind ______．A．blows the fire back toward the vessel B．comes over the bowC．comes over the stern D．comes over either beam18．A person who sees someone fall overboard should first ______.A. call for help and keep the individual in sightB. run to the radio room to send an emergency messageC. immediately jump in the water to assist the individualD. go to the bridge to report captain19．Keeping the draft at or below the load line mark will insure that the vessel has adequate ______．A．ballast B．reserve buoyancy C．displacement D．rolling periods 20．How should you signal the crane operator to lower the boom?A．With arm extended and fingers closed，point thumb downwardB．With arm extended downwards and forefinger pointing down，move hand in small horizontal circlesC．Extend arm with the palm down，and hold this position rigidlyD．With hands clasped in front of your body21．How many dry-powder extinguishers has your ship exactly been ______．A．produced B．provided with C．supplied by D．met with22．All the cargo holds must be ______ cleaned out ______ meet the requirement of the cargo surveyor．A．such／that B．so／that C．such／to D．so／as to 23．Placing a lashing across a hook to prevent a fitting from slipping out of the hook is called ______．A．faking B．flemishing down C．mousing D．worming24．As oil pipe line connections were broken，______ quantity of oil was caused to spill onto the wharf and into the dock water．A．a not knowing B．an unknowing C．an unknown D．a not known 25．The man directing and supervising the work of stevedores is the ______．A．local agent B．watchman C．docker D．foreman26．All of the following records are usually maintained by the watch-standing officers aboard a vessel EXCEPT the ______．A．deck logbook B．official logbookC．compass record book D．chronometer error book27．In writing up the log book at the end of your watch，you make an error．which of the following is the way to correct the error？A．Carefully and neatly erase the entry and rewrite it correctlyB．Remove this page of the log book and rewrite all entries on a clean pageC．Blot out the error completely and rewrite the entry correctlyD．Cross out the error with a single line and rewrite the entry correctly28．A buoy having red and green horizontal bands would have a light characteristic of ______．A．group occulting B．composite group flashingC．Morse letter A D．quick flashing29．Y ou’d better ______ your course to port to avoid collision．A．to alter B．alter C．altering D．altered30．Good anchorage may be obtained anywhere，generally mud and sand，in this water area．V essel may have ______．A．good towing ground B．good holding groundC．good grabbing ground D．good dragging ground31．A check rope is ______．A．a safety line attached to a man working over the sideB．used to measure water depthC．used to slow the headway of a bargeD．used to measure the overhead height of a bridge32．The approach to the roads and harbor from the ______ entails no difficulty．A．eastern B．easterly C．eastward D．eastwards33．The ship is not very stable，please ______ when making a turn．A．stop down B．speed down C．slow down D．down slow 34．Pitching is angular motion of the vessel about what axis?A．Longitudinal B．Transverse C．V ertical D．Centerline 35．Owing to the big draught of the ship，she has to get alongside by the time of ______．A．spring tide B．flood tide C．ebb tide D．slack water 36．The engine ______ smoke and steam．A．gives up B．gives away C．gives in D．gives off 37．Sometimes a tropical storm moves so slowly that a vessel，if astern of it，can ______ it．A．go ahead B．approach C．proceed near D．run into38．A frontal thunderstorm is caused by ______．A．pronounced local heatingB．wind being pushed up a mountainC．a warm air mass rising over a cold air massD．an increased lapse rate caused by advection of warm surface air39．Good weather is usually associated with a region of ______．A．low barometric pressure B．high barometric pressureC．falling barometric pressure D．pumping barometric pressure40．An air mass is termed warm if ______．A．it is above 70° FB．the ground over which it moves is cooler than the airC．it originated in a high pressure areaD．it originated in a low pressure area41．BASHI：E TO SE 9-10．500M IN HVY SQUALLY SHWRS AND TS．SEA 8-9M．SWELL SE 6-7．From the above forecast，the wind in Beaufort Scale will be ______．A．STRONG GALE TO STORM B．GALE TO STRONG GALEC．NEAR GALE TO GALE D．STRONG BREEZE TO NEAR GALE 42．MAINLY GOOD BECOMING MODERA TE．This forecast probably refers to ______ in a certain area．A．visibility B．winds C．sea D．fog43．A shipper of cargo aboard your vessel offers a letter of indemnity for the cargo．This is done in order to obtain a(n) ______．A．Clean Bill of Lading B．Order Bill of LadingC．Straight Bill of Lading D．Through Bill of Lading44．Bearings are true reckoned ______ in Admiralty Charts．A．clockwise from 000 to 359 degrees B．clockwise from 359 to 000 degreesC．anti-clockwise from 000 to 359 degrees D．anti-clockwise from 359 to 000 degrees 45．Admiralty Notices to Mariners，containing important information for the mariners and enabling them to keep their charts and books corrected for the latest information，are issued daily and published in ______．A．Weekly Editions B．Quarterly EditionsC．Annual Editions D．Monthly Editions46．Lines on a chart which connect points of equal magnetic variation are called ______．A．magnetic latitudes B．magnetic declinations C．dip D．isogonic lines 47．Mean high water is the average height of ______．A．the higher high waters B．the lower high watersC．the lower of the two daily tides D．all high waters48．______ amplify charted detail and contain information needed for safe navigation．A．Admiralty Sailing Directions B．Admiralty List of LightsC．Admiralty List of Signals D．Admiralty Notices to Mariners49．Ocean Passages for the World and Routeing Charts should be ______ for trans-oceanic information．A．looked B．consulted C．seen D．reviewed50．How is variation indicated on a small-scale nautical chart?A．Magnetic compass table B．Magnetic meridiansC．Isogonic lines D．V ariation is not indicated on small-scale nautical charts 51．A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest waterin the area is on the ______．A．north side of the mark B．west side of the markC．east side of the mark D．south side of the mark52．How would you pass a red buoy in the maritime buoyage system “A”?A．keep the buoy on the vessel’s starboard side when approaching a port and on the vessel’s port side when leaving．B．keep the buoy on the vessel’s port side when approaching a port and on the vessel’s sta rboard side when leaving．C．keep the buoy on the vessel’s starboard side when approaching a port and on the vessel’s starboard side when leaving．D．keep the buoy on the vessel’s port side when approaching a port and on the vessel’s port side when leaving53．Charted depth is the ______．A．vertical distance from the tidal datum to the ocean bottom plus the height of the tide B．vertical distance from the tidal datum to the ocean bottomC．average height of water over a specified period of timeD．average height of all low waters at a place54．Y ou may find the time of slack water after low water in a certain port from ______．A．Deadweight Scale B．Tide TablesC．Notices to Mariners D．Table of Azimuth55．Which of the following statement is correct regarding ship handling when in the vicinity of traffic separation schemes？______．(1)A vessel shall，so far as practicable，avoid crossing traffic lanes (2)If obliged to cross traffic lanes，she shall do so as nearly as practicable at right angles to the general direction of traffic flow．A．(1) only B．(2) only C．Both(1) and (2) D．Neither (1) nor (2) 56．On no account can they cut it ______ it be fouled．A．would B．shall C．should D．do57．It may be found that，in certain circumstances，Radar Beacon can cause unwanted interference particularly ______．A．at close range B．at end on situation C．at head on situation D．at crossing situation 58．Before sailing，mariners on duty shall check the headings of magnetic compass by comparison with ______．A．ship's clock B．engine movement recorder C．repeaters D．navigation lights 59．The radio waves used for radar are very short，only ______ long．A．a few centimeters B．a few fathoms C．a few meters D．a few feet 60．Y our radar is set on a true motion display．Which of the following will NOT appear to moveacross the PPI scope?A．Echoes from a buoyB．Own ship's markerC．Echo from a ship on the same course at the same speedD．Echo from a ship on a reciprocal course at the same speed61．The system will accept a harbor map which is incorrect，therefore the operator must exercise caution in harbor selection．A．be considered B．be prudent C．be bold enough D．be carelessness 62．Calibration Stations give special transmissions for the calibration of ship's ______．A．gyro-compass B．marine radar C．DF D．navigational satellite 63．To obtain accuracy in fixing by DF，______ and three stations should be used．A．parallel bearings B．long-range bearings C．short-range bearings D．cross bearings 64．A compass card without north-seeking capability that is used for relative bearings is a(n) ______．A．bearing circle B．pelorus C．bearing bar D．alidade 65．Before switching on gyro-compass，you should make sure that the power supply on board is ______．A．high or low B．AC or DC C．strong or weak D．on or off 66．What is a requirement for any action taken to avoid collision?A．When in sight of another vessel，any action taken must be accompanied by sound signals B．The action taken must include changing the speed of the vesselC．The action must be positive and made in ample timeD．All of the above67．When two power-driven vessels are crossing，which vessel is the stand-on vessel?A．The vessel which is to starboard of the other vesselB．The vessel which is to port of the other vesselC．The larger vesselD．The vessel that sounds the first whistle signal68．The rules require that a stand-on vessel SHALL take action to avoid collision when she determines that ______．A．risk of collision existsB．the other vessel will cross ahead of herC．the other vessel is not taking appropriate actionD．collision cannot be avoided by the give-way vessel's maneuver alone二．关联题（每组关联题题干下有4个小题，每小题4个选项）第一组：Merchant ships are designed to carry cargo．Some are also designed to carry passengers．They can operate as liners．These are employed on regular routes on a fixed timetable．A list of their arrival and departure dates is published in advance and they sail whether full or not．Liners can be classed as either deep-sea liners or short-sea liners．The former carry mainly containerized cargo across the oceans of the world; the later carry containerized or conventional cargo on shorter routes．Ferries are also classed as liners．These offer a daily or weekly service for passengers and vehicles across channels and narrow seas．A few ships are still employed as passenger liners．They not only carry passengers but also some cargo on routes from Europe to North America and to the Far East．Nowadays the passenger trade is very small and passenger liners usually operate as cruise ships for part of the year．69．The deep-sea liners _______．A．carry mainly containerized cargoB．carry mainly conventional cargoC．offer a daily or weekly service for passengers and vehiclesD．sail across channels and narrow seas70．The Liners _______．A．always sail full B．sail regularly even not fullC．always sail in ballast D．will not sail if not full71．A list of the arrival and departure dates of liners _______．A．will be published weeklyB．will be published when they sail, whether full or not, from Europe to North America and tothe Far EastC．will not be published even they sail fully loadedD．is published prior to their departure72．It is implied in the passage that _______．A．the number of passenger ships is smallB．all passenger ships will carry some cargo in near futureC．it is not necessary for liners to sail in regular timeD．container carriers should carry some passengers第二组：The axial thrust of the propeller is the force working in a fore and aft direction．This force causes the ship to move ahead through the water or to go astern．Because of her shape, a ship will move ahead through the water more easily than going astern．The transverse thrust is the sideways force of the propeller as it rotates．The transverse effect of the propeller blades at the top near the surface of the water is not strong enough to counteract the opposite effect of the lower blades．For right-handed propellers this cants the ship's stern to starboard and her bow to port, when the ship is going ahead．The effect is small and can be corrected by the rudder．When the engines are put astern, the effect is the opposite and the stern cants to port．This effect is stronger and cannot easily be corrected．V essels with left-handed propellers behave in the opposite way.73．The force that causes the ship to move ahead through the water or to go astern is known as_______．A．axial thrustB．transverse thrustC．the transverse effect of the propeller blades at the top near the surface of the waterD．the transverse effect of the lower blades of the propeller near the bottom of the water74．A left-handed propellers, when the ship is going ahead, will cant ship’s stern to_______．A．starboard B．port C．to move ahead D．move astern75．The transverse thrust of the propeller is stronger when the ship is_______．A．going a stern B．going aheadC．stopped D．making no way through the water76．The transverse thrust of the propeller can mainly be overcome by _______．A．the rudder B．the propeller itself C．the nautical instrument D．wind and tide三．中译英（共5题，请将答案写在答题纸上）77．锚离底, 降下锚球, 在引航员的指挥下驶往泊位，大副和木匠在船首了头。

三管轮机英语41-48期经整理

三管轮机英语41-48期经整理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.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 loads2.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 lead3.Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?A. RadiationB. ConductionC. Natural convectionD.Contact directly4.In a chilled water air conditioning unit using a reciprocating compressor, therefrigerating effect of 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 compressor5.In a general cargo crane, ______is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. the fan moter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 befrequently 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 ____C___ 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__C__.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil77. If large boilers were not lit up, __B___.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 ___C___.A. white smokeB. brown haze in the funnelC. orange flame tipD. swirl oil spray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。

三管轮轮机英语试题泵

1079. _____ at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.A. A relief valveB. An alarmC. A pressure gaugeD. A non-maim valve1080. In general, _____ is suitable for delivering small quantities at high pressure. A. reciprocating pump B. gear pumpC. centrifugal pumpD. vane pump1081. The pumps employed on board ship can be divided into two main categories i.e. _____ pumps and centrifugal pumps.A. gearB. nonpositive displacementC. positive displacementD. rotary 1082. Lube oil pumps taking suction from the sump of most small marine engines are usually _____.A. of the diaphragm typeB. of the centrifugal typeC. of the positive displacement typeD. independently driven by electric motors 1083. The lube oil pump used in a diesel engine is a_____.A. volute pumpB. centrifugal pumpC. diaphragm pumpD. gear pump1084. Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?A. Increased suction head pressure.B. Decreased feedwater temperature.C. Pump recirculating line being open too much.D. Excessive feedwater temperature.1085. A vane pump belongs to_____ according to its working principle.A. reciprocating pumpB. positive displacement pumpC. centrifugal pumpD. centripetal pump1086. Through a_____ pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.A. positive displacementB. ejectorC. centrifugalD. air compressor 1087. A mono-pump is a single-screw pump. That means it consists of_____ rotor(s).A. oneB. twoC. threeD. four1088. The gear and screw pumps are classified as_____.A. variable stroke pumpsB. multistage pumpsC. positive displacement pumpsD. triple-ported pumps1089. Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid_____ pressure.A. depending onB. in relative toC. regardless ofD. because of 1090. A gear pump belongs to_____ according to its working principle.A. reciprocating pumpsB. positive displacement pumpsC. centrifugal pumpsD. centripetal pumps1091. The pressure head of a pump is given in the unit of_____.A. kgB. MPaC. meter fluid columnD. None of the above is true. 1092. A centrifugal pump produces the required pressure energy by means of a rotating _____ provided with vanes.A. propellerB. impellerC. circumferenceD. screw1093. The discharge flow of a reciprocating pump is_____.A. steadyB. in pulsationC. continuousD. large 1094. In a_____ the center screw is driven and the outer screws idle.A. single screw pumpB. double-screw pumpC. triple screw pumpD. centripetal pump1095. A Screw pump belongs to_____ according to its working principle.A. reciprocating pumpsB. positive displacement pumpsC. centrifugal pumpsD. centripetal pumps1096. The amount of fluid delivered by a screw pump can be regulated by_____. A. throttling the pressure line B. changing the speed of the rotorC. either A or BD. None of the above is tree.1097. While flowing through the volute in a centrifugal pump, part of the_____ energy of the liquid is converted to_____ energy.A. kinetic/pressureB. kinetic/essentialC. pressure/kineticD. pressure/height1098. The amount of fluid delivered by a centrifugal pump can be regulated by_____.A. throttling the pressure lineB. changing the speed of the rotorC. either A or BD. None of the above is tree.1099. The amount of fluid delivered by a reciprocating pump can be regulated by_____.A. throttling the pressure lineB. changing the speed of the pistonC. either A or BD. None of the above is tree.1100. The amount of fluid delivered by a positive displacement pump can be regulated by_____.A. throttling the pressure lineB. changing the speed of the driving rotorC. either A or BD. None of the above is tree.1101. Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? (1) reciprocating; (2) rotary; (3) centrifugal.A. (1) onlyB. (1)and (2)C. (1), (2) and (3)D.(2)and (3)1102. The amount of fluid delivered by a helical pump can be regulated by_____. A. throttling the pressure line B. changing the speed of the rotorC. either A or BD. None of the above is tree.1103. 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/outlet1104. Throttling in the_____ line of a centrifugal pump involves the risk of the pump cavitation.A. suctionB. exhaustC. pressureD. discharge 1105. As for a hydraulic single action vane pump, the inner wall of the stator is usually of_____ shape.A. circularB. ellipticalC. rectangularD. hexagon 1106. As for a hydraulic vane pump, which of the following is in contact with the vanes during working: (1)the rotor; (2)the pump shaft; (3)the external surface of the housing.A. (1) onlyB. (2) onlyC. (1) and (2)D. (1),(2) and (3)1107. Shaft sealing in a centrifugal pump can be effected by_____.A. the mechanical sealB. packed stuffing boxesC. either A or BD. neither A nor B1108. A reciprocating pump belongs to_____ according to its working principle. A. injector pumps B. positive displacement pumpsC. centrifugal pumpD. centripetal pumps1109. A_____ pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.A. injectorB. positive displacementC. centrifugalD. centripetal1110. What is the purpose of a relief valve?A. to fill 2 tanks at the same timeB. to use pump at a higher pressureC. to return liquid to suction side if discharge valve is closedD. All of the above are true.1111.The pump discharge pressure will be considerably higher than the pressure at the_____.A. pump entry branchB. outlet pipeC. impellerD. None of the above is true.1112. Which of the following pumps belongs to centrifugal pump?A. Piston pumpB. Screw pumpC. Diffuser pumpD. Water-ring pump1113. The volute pump is one in which the impeller_____.A. discharges into a gradually widening channelB. has stationary diffuser vanesC. produces no kinetic energyD. All of the above are true.1114. In_____ pumps a closed discharge valve will cause bursting discharge pressure.A. centrifugalB. plungerC. injectorD. water1115. Which of the following pumps are self-priming, and can deal with liquid from a level below the pump; (1) ejector;(2) screw;(3) centrifugal.A. (1) onlyB. (1) and (2)C. (1),(2) and (3)D. (2) and (3)1116. The amount of fluid delivered by a gear pump can be regulated by_____.A. throttling the pressure lineB. changing the speed of the rotorC. either A or BD. None of the above is true1117. Attempts are made to eliminate axial thrust in centrifugal pump by_____.A. providing the impeller with balancing holesB. the use of symmetrical impellerC. neither A nor BD. either A or B1118. Which of the following pumps will build up a bursting pressure or stall their motors if the discharge valves are closed? (1) gear; (2) centrifugal; (3) screw.A. (1) and (2)B. (1),(2) and (3)C. (1) and (3)D. (2) and (3)1119. Which of the following operating features do displacement pumps bear if they are working under no-cavitation condition? (1) output is almost directly proportional to speed; (2) they are self-priming; (3) they will develop a discharged pressure equal to the resistance to be overcome, irrespective of speed.A. (1) and (2)B. (2) and (3)C. (1) and (3)D. (1), (2) and (3)1120. The_____ pump discharges a nearly constant amount of liquid regardless of pressure.A. mixed-flowB. axial-flowC. centrifugalD. displacement 1121. Which of the following pumps is used where a relatively high pressure and small capacity are required?A. V olute pumpB. Diffuser pumpC. Regenerative pumpD. All of the above1122. Some pumps use packing as sealing gland. The gland should be_____.A. slack enough to allow slight leakage of fluidB. slightly clockedC. brought up tight so as not to allow any leakageD. fitted with a relief valve 1123. 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 flow1124. The pipe friction and the resistance will_____ as a result of an increase in the amount of fluid flowing through the system.A. reduceB. riseC. raiseD. fall1125. Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating pump? (1) Its discharge is continuous; (2) It has no internal valves; (3) Upon accidental closing of discharge valve, excessive pressure will not build up.A. (1), (2)B. (2),(3)C. (1), (2), (3)D. (2) only1126. Which of the following pumps are self-priming, and can deal with liquid from a level below the pump: (1)reciprocating; (2)vane; (3) gear.A. (1) onlyB. (1) and (2)C. (2) and (3)D. (1), (2) and(3) 1127. Centrifugal pumps can be designed with a number of impellers_____ to attain a high final delivery pressure.A. in seriesB. in parallelC. either A or BD. None of the above is tree1128. With reference to an axial piston pump, which one of the following statements is true ?A. The cylindrical barrel is coupled to the motor.B. The cylindrical barrel has an odd number of bores.C. The bores end in sockets.D. The sockets fit in the swash plate.1129. With reference to a radial piston pump, which one of the following statements is false ?A. Surrounding the fixed shaft is a hollow shaft.B. This hollow shaft carries radial bores.C. Each bore is fitted with a well-lapped plunger.D. There are always even numbers of bores.1130. Under rotary pumps are the gear, _____, cam-and-piston and screw types.A. reciprocatingB. diffuserC. turbineD. vane1131. The engine fuel oil system should be primed by using_____, and the system cleared of air by means of the various air vent cocks.A. the priming pumpB. the transfer pumpC. the hydraulic pumpD. injector pump 1132. Domestic water pump is started automatically by_____ which operates as the water level falls to a predetermined level.A. a level controllerB. a temperature switchC. a pressure switchD. a floating ball 1133. The pumps employed on board ship can be divided into two main categories, i.e._____ pumps and centrifugal pumps.A. gearB. non-positive displacementC. positive displacementD. rotary 1134. Under centrifugal pumps are the volute, diffuser, mixed-flow, axial flow and_____ or regenerative types.A. reciprocatingB. hydraulicC. turbineD. vane 1135. In general, _____ is suitable for delivering small quantifies at high pressure. A. reciprocating pump B. gear pumpC. centrifugal pumpD. vane pump1136. The various pumps and lines are _____ to some extent so that each pump can act as an alternative for another.A. interlockedB. interconnectedC. interferedD. interacted 1137. _____ are more suitable for large quantities at low pressure.A. Reciprocating pumpsB. Rotary pumpsC. Centrifugal pumpsD. Gear pumps1138. Gear pumps are _____ type because they discharge a near constant amount of liquid regardless of pressure.A. positive displacementB. non-positive displacementC. mixed-flowD. axial-flow1139. Centrifugal pumps are non-positive and a fairly_____ unit.A. low pressureB. low dischargeC. low speedD. high pressure 1140. In_____ pump a closed discharge valve will not cause excessive pressure to build up.A. gearB. vaneC. screwD. centrifugal1141. Centrifugal pumps are popular because they are very simple in construction, and produce smooth, constant, _____ discharge.A. non-pulsatingB. pulsatingC. positiveD. non-positive 1142. Sealing in pump shaft is achieved by means of the_____.A. gasketB. packingC. washerD. spring1143. Centrifugal pumps, however, can be designed with a number of impellers_____ to attain a large amount of liquid.A. in seriesB. in parallelC. assembledD. together1144. Gear pumps are_____ because they discharge a near constant amount of liquid regardless of pressure.A. negative displacement typeB. turbine typeC. positive displacement typeD. mixed-flow type1145. The_____ discharge a nearly constant amount of liquid regardless of pressure.A. mixed-flow pumpB. axial-flow pumpC. centrifugal pumpD. displacement pump1146. The gear, screw, and vane pumps are all classified as_____.A. variable stroke pumpsB. multistage pumpsC. positive displacement pumpsD. triple-ported pumps1147. Which of the following are components of a mechanical seal? (1) stationaryring; (2) rotational ring; (3) packing; (4)spring.A. (1), (2) and (3)B. (1), (2) and (4)C. (2), (3) and (4)D. None of the above. 1148. The pressure head of a water pump is given in the unit of_____.A. kgB. MPaC. mH20D. None of the above.1149. A vane pump belongs to_____ according to its working principle.A. reciprocating pumpsB. positive displacement pumpsC. centrifugal pumpsD. centripetal pumps1150. Attempts are made to eliminate axial thrust in centrifugal pump by_____.A. providing the impeller with counterbalancing holesB. the use of symmetrical impellerC. neither A nor BD. A and B (either A or B)1151. 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 1152. A positive displacement pump is that where the volume of the pump chamber is alternately_____ to draw the liquid in and then_____ to force the liquid out.A. increased / decreasedB. decreased/increasedC. decreased/decreasedD. increased/increased1153. Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? (1) reciprocating; (2) rotary; (3) centrifugal.A. (1) onlyB. (1) and (2)C. (1), (2) and (3)D. (2) and (3)1154. Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? (1) reeiproeating; (2) vane; (3) gear.A. (1) onlyB. (1) and (2)C. (1), (2) and (3)D. (2) and (3)1155. A pump is said to have "negative suction head" when the pump is located_____.A. between the suction and dischargeB. below the liquid supplyC. above the liquid supplyD. any of the above1156. If a bilge pump failed to build up discharge pressure, you should check for_____.A. excessive water in the bilgesB. a clogged suction straine rC. oil in the bilgesD. a closed skin valve1157. The advantage of a centrifugal pump as compared with a reciprocating pump is that _____.A. discharge is continuousB. it has no internal valvesC. upon accidental closing of discharge valve, excessive pressure will not build upD. all of the above are true1158. Which of the following pumps belongs to centrifugal pump?A. Reciprocating pump.B. Screw pump.C. Diffuser pump.D. Water-ring pump. 1159. While flowing through the volute in a centrifugal, part of the_____ energy of the liquid is converted to_____ energy.A. kinetic/pressureB. kinetic/essentialC. pressure/kineticD. pressure/height1160. When a hydraulic vane pump is working, which of the following is in contact with the vanes? (1) the rotor; (2) the internal surface of the housing; (3) the external surface of the housing.A. (1) onlyB. (2) onlyC. (1) and (2)D. (1), (2) and (3) 1161. 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 decrease1162. A double suction centrifugal pump impeller has been installed in the reverse direction, and will_____.A. have a greater head capacityB. operate with increased impeller efficiencyC. discharge through the suction side of the pump casingD. require more power to run the shaft1163. If a centrifugal pump were continually operated with the discharge valve closed, the _____.A. motor controller overload would openB. pump would eventually overheatC. relief valve would continuously cycle openD. motor would overheat1164. A centrifugal bilge pump requires priming_____.A. primarily to lubricate the shaft sealsB. due to the inability of this type of pump to lift water to cover the suction (eye) of the impellerC. to initially unload the pump by having its head pressure equal to discharge pressureD. in order to overcome the potential energy of water in the discharge line1165. Which of the listed conditions can lead to cavitation in a centrifugal pump? A. Vapor pockets formed in the suction flow stream B. Rough easing volute surfacesC. Worn wearing ringsD. Heavy fluid in theflow stream1166. What is a function of the wearing rings used in most centrifugal pumps?A. Absorb erosion of high velocity discharge stream.B. Seal pump shaft against entry of air.C. Isolate the discharge side from the suction side.D. Dampen the turbulent discharge flow.1167. 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 1168. To maintain design discharge pressure from a centrifugal pump, the design clearance must be maintained between the_____.A. shaft and impellerB. motor and pump shaftC. casing and impeller wearing ringsD. lantern ring and impeller1169. If a radial piston hydraulic pump fails to deliver rated fluid volume, the cause can be _____.A. contaminated fluidB. pitted thrust ringsC. worn pintle bearingsD. obstructed suctions passage1170. With respect to centrifugal pump impellers, which of the following descriptions represents the correct centrifugal pump classification?A. Single stage or multistage.B. High pressure or low pressure.C. Open or close coupled.D. Horizontal or vertical.1171. The static suction lift of a pump is the difference in elevation between the_____.A. centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pumpB. centerline of the pump and the suction liquid level when the source of liquid is above the pumpC. centerline of the pump and the level of the discharge liquidD. liquid levels of the suction and discharge1172. The usual number of single-acting pistons used in a variable stroke axial-piston pump is_____.A. 3 or 5B. 5 or 7C. 7 or 9D. 9 or 111173. An axial piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned_____.A. radially from the shaftB. parallel to each other and to the shaftC. parallel to each other but at a right angle to the shaftD. at an angle to each other and to the shaft1174. 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.1175. Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?A. The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump.B. Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight.C. Rotary pumps occupy only one-half the space of reciprocating pumps.D. Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump.1176. Increasing the speed of a rotary pump above its rated speed will result in which of the following conditions to occur?A. Loss of suctionB. Increased clearancesC. Decreased clearancesD. Decreased slippage1177. One of the main differences between the various types of screw pumps is in the _____.A. stuffing box diameterB. direction of rotation of the screwsC. pitch of the screwsD. type of driving gears1178. A distinguishing feature of an eductor(喷射器), when compared to other pumps, is the _____.A. discharge end being smaller than the suction endB. small size of impellerC. lack of moving partsD. ease at which the wearing rings may be changed1179. Which features of a centrifugal pump reduce the need for renewing worn impellers and pump casings?A. Close radial clearance between impeller hub and casing.B. Low rotational speed of impeller.C. Removable end plate.D. Replaceable impeller and casing wearing rings.1180. A centrifugal pump may fail to deliver water when first started if the_____. A. water seal pipe is plugged B. pump is not primedC. seal ring is improperly locatedD. impeller is flooded1181. Which of the devices listed is common to all types of pumps?A. A power end and fluid end.B. A propeller and educator.C. A volute and impeller.D. A turbine and piston.1182. If a centrifugal pump vibrates and is noisy when operating, the cause could be_____.A. worn gland sealing shaftB. worn wearing ringsC. a bent shaftD. reversed pump coupling1183. If the capacity of a centrifugal pump decreases gradually over a long period of time, you should replace the_____.A. packing glandB. mechanical sealsC. lantern ringsD. wearing rings 1184. To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with_____.A. lantern ringsB. bearingsC. easing volutesD. wearing rings 1185. If a centrifugal pump is driven by a constant speed electric motor and produces a discharge pressure less than designed, the cause is probably_____.A. excessive pump speedB. excessive suction headC. worn wearing ringsD. gross pump misalignment1186. 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 box 1187. If you were operating a centrifugal water service pump with worn wearing rings , the_____.A. pump would be very noisyB. pump would vibrate excessivelyC. pump would develop insufficient flowD. stuffing box would leak excessively1188. One of the main functions of wearing rings, as used in a centrifugal pumps, is to_____.A. maintain radial alignment between the pump impeller and casingB. absorb all impeller shaft end thrustC. prevent water leakage to the atmosphereD. prevent wear of the pump casing and/or impeller1189. After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?A. The relief valves in the system should be readjusted.B. The filters and strainers should be checked frequently.C. All system pressure should be readjusted.D. The system should be drained and renewed with a fluid of different operating characteristics.1190. Which of the following is operated from the main engine room console on anautomated vessel?A. Fire pump and lube oil pumpB. Lube oil pump and distilling plantC. Distilling plant and shaft alley doorD. Shaft alley door and fixed CO2 release1191. Which of the following terms is used to identify the pressure of the liquid entering a pump?A. Suction headB. Pump headC. Discharge headD. Total head 1192. If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?A. CentrifugalB. GearC. PropellerD. Turbine1193. Which of the following statements is/are true regarding hydraulic pumps in general?A. Variable volumes can be obtained with gear pumps only by variation of the pump drive speed.B. A radial piston pump houses sliding pistons in a stationary cylinder block through which passes a rotating pintle or ported shaft.C. The amount of fluid displaced per revolution of an axial piston rotary pump is dependent on the angle formed between the cylinder block and valve plate.D. All of the above.1194. 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 ring1195. The pressure of a liquid leaving the pump can be referred to as the_____.A. total headB. discharge headC. net positive suction headD. suction head1196. Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by_____.A. a compressed packing glandB. lantern tings between the packing ringsC. a liquid sealD. the stuffing box gland1197. The suction - force principle of operation is a typical characteristic of_____. A. centrifugal pumps B. jet pumps C. propeller pumps D. reciprocating pumps1198. Hydraulic pumps most commonly used in steering systems are of the_____. A. lobe type B. screw type C. axial piston type D. volute type1199. An axial piston, variable stroke pump is used in a vessel's hydraulic steeringgear. Under pressure, oil continually leaks out from between the valve plate/cylinder barrel and will _____.A. cause loss of hydraulic oil from the systemB. result in extreme damage to the pumpC. cause damage to the pump ff not continually drained from the pump casingD. result in the system high side pressure to substantially drop off1200. A centrifugal pump vibrates excessively during operation. Upon disassembling the pump it is found that the impeller is out of balance. Without an available spare, you should_____.A. drill holes through the heavy side of the impeller until it balancesB. weld counterweights to the light side of the impellerC. remove metal from the heavy side by machining in a latheD. acid wash and serape the heavy side until it balances1201. An increase in rotor clearances in a rotary pump will_____.A. increase discharge pressureB. decrease pump capacityC. decrease pump cavitation,D. decrease reaction ring clearance1202. The internal force of a material, which tends to resist deformation when subjected to external forces, is known as_____.A. stressB. strainC. shear strengthD. ultimate tensile strength 1203. In an electro-hydraulic steering system, under movement is maintained in close synchronization with the steering wheel position by means of the_____.A. trick-wheelB. follow-up controlC. six-way valveD. Rapson slide1204. Crankcase sweating in a refrigeration system is caused by_____.A. a stuck solenoid valveB. a shortage of refrigerantC. too much oil in circulationD. too much superheat1205. If a refrigeration system compressor crankcase is sweating, you should_____.A. add refrigerant to the systemB. adjust the thermal expansion valve to the proper settingC. adjust the float valve to the proper holding pressureD. open the hand expansion valve1206. A multistage centrifugal pump can be BEST described as having_____.A. two or more impellers housed together in one casing and mounted on a single shaftB. a single stepped impeller mounted in a progressively staged casingC. a large radial clearance between the impeller and casing to prevent overheating due to friction。

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