甲类三管轮机英语考试真题.docx

1、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 temperat

2、ure 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 _.

3、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 se

4、paratorB.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 ove

5、rloaded【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

6、 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 meter.A.puritiesB.combinationsC

7、.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

8、.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 cyli

9、nderD.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 c

10、hecking 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 syste

11、m 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

12、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

13、 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

14、 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

15、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 b

16、e 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

17、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

18、 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 crews assigned emergency stations can be found on the ships _.A.muster listB.c

19、ertificate 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

20、 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

21、 burner is used to ignite _.A.the solid waste 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

22、】 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

23、 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 completel

24、y 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 pro

25、cessB.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.

26、 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 sur

27、face 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 valvesB.compression ringsC.piston skir

28、tsD.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

29、 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 malf

30、unctions 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 joine

31、d 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.ca

32、nt 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 para