2023轮机英语校考复习题库600题（含答案）

PAGEPAGE12023轮机英语校考复习题库600题（含答案）一、单选题1.Intheproductionoffreshwaterfromseawaterthroughaprocessofheatingandcooling,thecoolingphaseofproductionisusuallycalled.A、EvaporationB、distillationC、dehydrationD、condensation答案：D2.Whichofthefollowingisnotnecessarybeforebunkering?A、Closeandblockoppositesidebunkermanifoldvalves.B、Agreeonmunicationonboardbetweenthepeopleinvolvedinbunkering.C、ProvideadequatelightingatbunkerandsoundingpositioD、Signthebunkerreceipt.答案：D3.Whyareslowspeeddieselenginesespeciallytall?A、Becauseinthiswaythepistoncanbewithdrawndownwards.B、Theenginecanoccupylargerspace.C、Theenginemayhavelongstrokeswhichimproveengineefficiency.D、Moremaintenanceisprovided.答案：C4.Pleaserearrangetheproceduresaboutthemainenginetrial.1)Closeallindicatorcocks.2)Informthebridge.3)Givethemainengineatrialonpoweraheadandastern.4)Starttheengineonaironbothdirections.A、4)-3)-2)-1)B、1)-2)-3)-4)C、3)-1)-2)-4)D、2)-4)-1)-3)答案：D5.Thesewagetreatmentusuallyconsistsof_____.

①thebio-filtertank;②thesterilizationpartmentA、①B、②C、both①and②D、either①or②答案：C6.Anelectricaldevicewhichemploysastationaryarmatureandarotatingelectromagneticfieldisusedaboardasa.A、magneticamplifierB、ship'sservicealternatorC、three-wireDCgeneratorD、saturablecorereactor答案：B7.Tooperateacentrifugalfirepumpatreducedcapacity,youshould.A、readjustthereliefvalveB、throttlethesuctionlineC、throttlethedischargevalveD、opentheprimingline答案：C8.Usually_____handlesthemajorityofthecorrespondenceandnegotiationneededduringtransactionsofstoresandsparepartsintheenginedepartment.A、thechiefengineerB、thesecondengineerC、thecaptainD、thechiefmate.答案：A9.Theword‘this’inline3ofthefirstparagraphprobablyrefersto.A、waterhammerB、steamenteringpipingC、thesituationdescribedinthefirstsentenceD、thewaterhavingalargefreesurfacearea答案：C10.Priortoaship'sdeparturefromanyport___________shouldbecheckedwithdeckeofficertoensuresatisfactoryoperation.A、firefightingpumpB、thesteeringgearC、lifeboatengineD、thedonkeyengine答案：B11.Inatwo-stroke/cycledieselengine,theprocessofscavengingbeginsasthe_____.A、pistonnearsandpassesTDCB、latterpartofthedown-strokeC、pistonpassesBDCD、earlypartofthedown-stroke答案：B12.In(2.4)ofthispassage,‘theseactivities’referstothefollowingactivitiesexcept.A、theestablishmentofanyadditionalrequirementB、thecorrectiveactiontakenC、theinspectionsheldD、thereportingofanynon-conformity答案：A13.Whichoftheequipmentlistedismosteffectiveinprocessingbilgeslopsforoverboarddischarge?A、A100ppmoilywaterseparator.B、AssemblingthelubeoilpurifierasaseparatorandaligningittothebilgeoverboardC、A15ppmoilywaterseparatorD、Amagneticduplexstrainer.答案：C14.ModemDieselenginesarerunningon____,afuelwhosegradeliesbetweenthatofHFOandMDO.A、DieseloilB、IntermediateFuelOil(IFO)C、GasoilD、Residualoil答案：B15.Theinternationalbodyresponsiblefordraftingtheconventionprohibitingmarinepollution(MARPOL)isthe_____.A、MaritimeAdvisoryCouncil.B、InternationalMaritimeOrganization.C、InternationalAssociationofShipping.D、AssociationofSeafaringNations.答案：B16.Electricallyoperatedsafetydevicesonauxiliarydieselenginesfunctiontostoptheengineby.A、increasingthevolumeofintakeairB、shuttingoffthefuelsupplyC、increasingtheenginebackpressureD、over-speedingtheengine答案：B17.Theflammablerangeofhydrogengasislargerthanthatofpetroleumvapouraccordingtothisparagraph,itmeans_____.A、hydrogengasiseasiertoburnB、petroleumvapouriseasiertoigniteC、hydrogengasismoredangerousD、petroleumvapourismoredangerous答案：C18.Enginefuelinjectionpumpindexis____.A、theviscosityindexB、thefueloilcontentsC、thestartingspeedD、thereadingattherack答案：D19.Tocontroladeviceorsystemistoadjustorvarywhichaffectit.A、thestructuresB、thelinesC、theparametersD、thelocation答案：C20.Sootblowersshouldbeusedinpropersequencesothat.A、excessstresseswillnotbesetupintheboilerB、thedeckswillnotbecoveredwithsootC、thesootwillbeswepttowardtheuptakesD、therewillnotbealossofsteampressure答案：C21.HowdoestheshipSeCurityalertsystemwork?A、Whenactivated,itshaltransmitaship－to-shipsecurityalert.B、ThesecurityalertitsentwillbereceivedbyapetentauthoritydesignatedbytheAdministration.C、Thesystemcanraisesomealarmon-boardtheshipD、Thesystemshalbecapableofbeingactivatedfromthenavigationstation.答案：B22.Duringwhichofthelistedpistonstrokesofafour-stroke/cycledieselengine,isthepistonmovingdownward?A、IntakestrokeB、pressionstrokeC、ExhauststrokeD、Pumpingstroke答案：A23.Ifasmallelectricmotorisimmersedinsaltwateritshouldbe

I.washedwithfreshwater;II.driedinanoven.A、IonlyB、IIonlyC、bothIandIID、neitherIorII答案：C24.Althoughthecrankshaftsofmediumdieselenginesappeartoberobust,theyrelyonthesupportof_____todeveloptheirfullstrength.A、thepistonrodsB、thecrankthrowsC、thethrustbearingsD、themainbearing答案：D25.Whichofthefollowingconditionscancontributetoaccidents?A、GoodhousekeepingB、InspectionsC、UnsafeconditionsD、Intelligentworkhabits，答案：C26.Whichisnottheoperatingmedium?A、bridgeofficerB、pressedairC、hydraulicoilD、electricity答案：A27.Thedewpointisreachedwhenthewetbulbtemperatureis.A、equaltothedrybulbtemperatureB、twicethedrybulbtemperatureC、lessthanthedrybulbtemperatureD、50°Cabovethedrybulbtemperature答案：A28.Whichofthelistedconditionscanleadtocavitationinacentrifugalpump?A、Vaporpocketsformedinthesuctionflowstream.B、Roughcasingvolutesurfaces.C、Wornwearingrings.D、Heavyfluidintheflowstream.答案：A29.Whichisnotthereasonwhythewater-tubeboilerhasreplacedthefiretubeboilerasthemajorsteamproducer?A、thesteamraisingprocessismuchquickerB、efficiencyishighC、lowwaterqualitydemandD、thefeedwaterhasagoodnaturalcirculation答案：C30.WithUMS,whentheengineroomisunwatched_______willcontrolthemain

Engine.A、thebridgeofficeronwatchB、thechiefengineerC、thedutyengineerD、thedutymotorman答案：A31.TheUSCGuseacheck-listsothat______.A、theycaninspecttheshipsonebyoneaccordingtothelistofshipsB、theycanhaveagoodunderstandingwiththeship'sofficersC、theywillnotmissanyitemtobeinspectedD、ships'personnelmayhaveasimilarcopy答案：C32.Thetermusedtoexpresstheignitionqualityofaparticularfuelis_____.A、cetanenumberB、octanenumberC、ignitionindexnumberD、volatilitypoint答案：A33.Thermostatsinthefirealarmsystemareactuatedbyusually.A、smokesensorsB、thedifferenceinthermalexpansionoftwodissimilarmetalsC、pressurelossduetoairbeingheatedD、anelectriceyewhichactuateswhensmokeinterfereswiththebeam答案：B34.IftwoACgeneratorsareoperatedinparallel,theloadisdistributedevenlybyA、arheostatB、abalancingcoilC、changingfieldexcitationD、adjustingthegovernorsettings答案：D35.Asforoilseparator,contributestopoorseparationefficiencyandcarriesoverofwaterintothecleanoiloutlet.A、AtoobiggravitydiscB、AtoosmallgravitydiscC、ThehighoiltemperatureD、Thehighspeedmotor答案：B36.Whenseparatinglubeoilinpurifier,theoptimalseparatingquantityis____oftheratedquantityonnameplate.A、100%B、1/2C、1/5D、1/3答案：D37.Whendistillingseawater,thecoolingwaterdischargingfromthedistillerisfedbacktoevaporatorasfeedwater.A、todecreasescaleformationB、forbettercoolingeffectC、formoreeconomicalpurposeD、toraisevacuum答案：C38.Asforanoil-firedboilerifatanormalsteamingconditionandwatergoesoutofsightingaugeglassestheactionyoushouldtakeis:I.secureoiltofires;II.increasefeedpumppressure.A、IB、IandIIC、IID、neitherInorII答案：A39.Accordingtothispassage,someparticularequipmentshouldhavespecificmeasurestopromoteitsreliability,because.A、itisnotincontinuoususeB、itssuddenfailuremayresultinhazardoussituationsC、itsstand-byarrangementsmaynotberegularlytestedD、itmaynotbeidentifiedbythepany'ssafetymanagementsystem答案：B40.Anexhaustfanismonlyinstalledtoavoidexcessiveairpressureinthespace.A、PlusB、negativeC、minusD、positive答案：D41.Theunderlineword‘cracked’intheparagraphprobablymeans.A、themastervalveshavebeenfracturedB、theseatsofthevalveshavebeenbrokendownC、thepipesandthevalveshavedefectsD、themastervalvesshouldhaveaslightopening答案：D42.Afull-flow50gmfiltermustbeinstalledasclosetothemainengineaspossibleinorderto______.A、protecttheinjectionsystemponentsB、keepthecentrifugalseparatorssmoothrunningC、avoidcavitationinthesystemD、safeguardthesupplysystemponents答案：A43.WhichoneofCSO'responsibilitiesisNOTmentionedinthepassage?A、ensuringthattheSSAisproperlycarriedoutB、ensuringthatSSPsarepreparedandsubmittedforapprovalC、ensuringthattheSSAisimplementedonboardeachshipD、performingregularsecurityinspectionsoftheship答案：D44.Whichofthelistedmethodsofheattransfertakesplace.when.two.substances.of.differenttemperaturesareinphysicalcontactwitheachother?A、RadiationB、ConductionC、ConvectionD、Eachofradiation,conduction,convection答案：B45.areusedsacrificiallytoprotectheatexchangerheaders,oreventheship'shullitself.A、CopperrodsB、ZincrodsC、CarbonrodsD、Magnetrods答案：B46.Whatwillbethepossibleresultofaddingextraelectricalappliancestoacircuit?A、Thewireswillbeeinsulated.B、ThefireislikelytooccurC、ThecircuitislikelytobechangedD、Theinsulationwillbeimproved答案：B47.PortablecarbondioXidefireextinguishersshouldbesentashoretoberecharged_______.A、Whentheremainingchargevolumeislessthan90percentoftherequIredvolumeB、ateachinspectionforcertificationC、ateachannualinspectionD、whentheweightlosseXceeds10%ofweightofcharge答案：D48.Tocloseabutterflyvalve,itisonlynecessarytoturnthehandle.A、aturnB、halfofaturnC、one-thirdofaturnD、aquarterofaturn答案：D49.Anover-speedtripstopsadieselenginewhentheengine_____.A、runsoutoffuelB、haslowlubricatingoilpressureC、exceedsasetmaximumspeedD、hashighcoolingwatertemperature答案：C50.Inadditiontonormalmechanicalattentions,suchasisnecessary.①lubricationofbearings②adjustmentoffanbelts③cleaningofmotors④carefulgreasingoflinkagesofautomaticcontrolsA、①②③B、②③④C、①④D、①②③④答案：D51.Whenreceivedtheorder"FinishedWithEngine",whichofthefollowingoperationsiswrong?A、stoptheL.Opump,S.Wpump,jacketwatercoolingpumpimmediatelyB、stopthe.OboosterpumpC、engagetheturninggear,turnthemainengineD、openthemainenginescavengeairtrunk'sdraincocks答案：A52.Whichofthefollowingistrue?A、ThestrokeoftheplungercanbeadjustedB、TheoutletvalveisspringloadedC、TheplungerdownstrokeisacplishedbythespringD、Theoutletvalveisspringloaded,theplungerdownstrokeisacplishedbythespring答案：C53.Thelatentheatofevaporationisdissipatedintheinapressionrefrigerationsystem.A、evaporatorB、condenserC、expansionvalveD、pressor答案：B54.Therequiredrudderangleistransmittedfromthesteeringwheelatthebridgetothetelemotoratthesteeringgear.A、manuallyB、bypressedairC、byfueloilD、hydraulicallyorelectrically答案：D55.TheISMCodeisa____requirementadoptedbyallrecognizedFlagStates.A、MARPOLB、SOLASC、STCWD、TheInternationalConventiononLoadLines,1966答案：B56.""means"Movementofenginenolongerrequired.".A、StopEngineB、NoEngineRevolutionsC、Stand-byEngineD、FinishedWithEngine答案：D57.Aliquidisbeingtransferredbyacentrifugalpump.Astheliquidpassesthroughthevolute,itsvelocitydecreasesand.A、itspressureincreasesB、itspressuredecreasesC、thepotentialenergydecreasesD、thekineticenergyincreases答案：A58.____pistonshavelowinertiaandhighcoefficientofthermalexpansion.A、ironB、CaststeelC、FoiledsteelD、Aluminum答案：D59.Thephrase"thelattermethods"inthelastsentencemeans.A、anindependentwatersupplysystemB、agravityprimingsystemC、anexhaustersystemD、adischargelineprimingsystem答案：C60.Accordingtotheauthor'sstandpoint,whatdoestheefficiencyofslow-speeddieselenginepropellersdependon?A、PropellerpowerB、BothpropellersizeandrevolutionsC、PropellersizeD、Propellerrevolutions答案：B61.Theoilusedintheelectronicgovernoractuatormustbemaintainedatthecorrectvalueandthatonlythegradeofoilisused.A、highB、lowC、allkindD、appropriate答案：D62.Thefulltorqueelectricbrakeonanelectriccargowinchfunctionsto.A、actasabackupbrakeintheeventthemechanicalbrakeshouldfailB、automaticallyholdtheloadassoonascurrenttothemachineisshutoffC、automaticallygoverntheloweringspeedoftheloadD、automaticallygovernthehoistingspeedoftheload答案：B63.Tocontroladeviceorsystemistoadjustorvarywhichaffectit.A、thestructuresB、linesC、theparametersD、Location答案：C64.Thedieselenginevalvesubjectedtomostsevereconditionsofserviceisthe_____.A、cylinderexhaustvalveB、airstartingvalveC、airinletvalveD、cylinderreliefvalve答案：A65.Whichofthefollowingstatementsistrueaccordingtothispassage?A、Twoheavyoilservicetanksareusedmeanwhile.B、”Heater"mentionedinthispassageisonlyusedtoheatheavyoil.C、Twopumpsarefitted,whichdrawoilfromtheservicetankinuse.D、Dieseloilpassestotheprimarypump,andthenthroughachange-overvalve.答案：C66.Thispassageismainlyon______.A、theelectricalremotecontrolofmainenginesB、theelectricalcontrolequipmentforsteeringgearsC、thebridgeremotecontrolofmainenginesD、thecontrolboxassemblyinsteeringgearpartment答案：B67.WhichstatementistrueaboutregulationD-l?A、AtleastthreetimesthevolumeofeachballastwatertankshouldbeexchangedB、Atleast95percentvolumetricexchangeofBallastWaterwouldbeacceptedC、Pumping-throughmethodhastobeusedD、Eventhevolumetricexchangeislessthan95percent,theshiphasotherwaystomeetthestandard答案：B68.Oilmistdetectorsareusuallyusedonboardtodetectoilmistdensitywithin_____.A、theenginecrankcaseB、theenginescavengeboxesC、draintanksD、fueltanks答案：A69.Duringthewatchkeepingatsea,____shouldbeloggedor.recordedintheenginelogbook.A、therunninghoursofthecoolingwaterpumpB、thechiefengineerSorderC、themainparametersofmainandauxiliaryequipmentD、thepositionofthevessel答案：C70.Theorder''means‘Maximummaneuveringenginerevolutionforaheadpropulsion’.A、FullAheadB、HalfAheadC、FullAsternD、HalfAstern答案：A71.Afeedbackisaninput.A、whichgovernsthestateofavariableB、whichprovidesavisualandaudiblealarmC、whichindicatesvaluesofcontrolledvariablesD、whichmeasuresthestateofthecontrolledvariable答案：D72.Atraditionalenginestructurearrangementprisesa_____whichacmodatesthecylinderliners.A、cylindercoverB、bedplateC、frameD、cylinderblock答案：D73.Anoperationalamplifier,asusedintoday'sconsoles,mayhaveacalculatedgainof5.Thismeansthatastheinputchangesby.A、1volt,theoutputchanges5voltsB、5volts,theoutputchanges1voltC、5volts,theoutputchanges10voltsD、10volts,theoutputchanges5volts答案：A74.Theburningoffueloilinadieselenginehavingahighsodiumcontent,willcause_____.A、corrosionandgroovingofexhaustvalvesB、corrosionandgummingofthefuelinjectionpumpC、saltdepositsintheexhaustmanifoldD、slagdepositsinthefuelinjectionequipment答案：A75.Theadvantageofthecontrolequipmentis______.A、thatthetransmitterisonthebridgeB、thatlocalmanualcontrolcanbeachieved.C、thatremotecontrolcabbeachieved.D、simpleinconstructionandreliableinoperation3答案：D76.High-speedrotationinacentrifugalpurifiercanproduceaforce_____theforceofgravity.A、manythousandtimeslargerthanB、thesameasC、manythousandtimessmallerthanD、whichhasnothingtodowith答案：A77.Whichofthefollowingstatementsconcerningfire-tubeboilersiscorrect?A、bustiongasesflowthroughthetubes.B、Flamesimpingeonthetubes.C、bustionoccursinthetubes.D、Waterflowsthroughthetubes.答案：A78.Itispossibletomountadoublesuctioncentrifugalpumpimpellerwiththevanesfacinginthewrongdirection.Thiswouldcausethepump.A、headcapacitytoimproveB、dischargetobereversedC、efficiencytodecreaseD、slippagetodecrease答案：C79.Theoutputshaftoftheengineiscoupledtothegearbox.Theoutputshaftof_____drivestheCPPthroughaclutcharrangement.A、thegearboxB、theengineC、thecrankshaftD、theimmediateshaft答案：A80.Themainpurposeofinspectionforarunningdieselengineis_____.A、measuringthemechanicalloadandthethermalloadB、inspectingthermalandmechanicalconditionoftheengineC、inspectingeachsystemandexhausttemperatureD、testingforpresspressureandexplosionpressure答案：B81.Dieselengineexhaustgastemperaturescanbeusedtodetermineindividualcylinder______.A、performanceB、horsepoweroutputC、fuelconsumptionD、scavengeeffect答案：A82.Ifthesteamtrapisoutoforder,______.A、thereisnosteaminthedrainlinesB、condensatewillflowinasightglassC、itworkswithsounding"clickD、thesteampressurewilldecrease答案：D83.Apoundgaugeisusedformeasuringpressuresbothaboveandbelow.A、absolutepressureB、latentpressureC、flowpressureD、atmosphericpressure答案：D84.Whentheinspectorgetsevidencethatthemasterorcrewmightbenotfamiliarwithessentialshipboardoperationsrelatingtothesafelyofshipsorthepreventionofpollution,orthatsuchoperationshavenotbeencarriedout,theinspectorshould______.A、finetheshipB、detaintheshipC、carryoutamoredetailedinspectionD、informtheship’sflagslates答案：C85.Oneofthedisadvantagesofusingcarbondioxidetoextinguishafireinanenclosedspaceis____A、the“snow”whichissometimesdischargedalongwiththegasintoxicB、prolongedexposuretohighconcentrationofCO2gasthatcausessuffocation（窒息）C、rapiddissipationoftheco2,vaporD、theco2gasislighterthanairandalargeamountisrequiredtoextinguishafirenearthedeck答案：B86.Inthenextparagraphofthepassage,whichofthefollowingstatementsmayprobablybedescribed?A、AnauxiliaryboilerB、AfreshwatergeneratorC、AnwasteheatboilerD、Aturbocharger答案：C87.AccordingtoMaritimeLabourConvention2006_________ofseafarersundertheageof18shallbeprohibited.A、nightworkB、hotworkC、highplaceworkD、weldworM答案：A88.Anafter-coolerinstalledbetweentheturbochargerandthecylinderairinlet____.A、increasesthedensityoftheairB、decreasesthedensityoftheairC、increasesthespecificheatoftheairD、decreasesthespecificheatoftheexhaust答案：A89.Accordingtowhatisthecargohandlingequipmentrated?A、thesafeworkingloadtobeliftedB、thecapacityofthedrivemotorC、outputofthewinchD、cargohandlingwires答案：A90.Foradieselengine,individualcylinderperformanceismonlydeterminedbyexhaustgas____.A、chemicalanalysisB、backpressurereadingsC、pyrometerreadingsD、infraredanalysis答案：C91.Smalloilspillsondeckcanbepreventedfromcontaminatinganywatersby_____A、pluggingallscuppersanddrainsB、placingfloatingboomsaroundtheshipC、regularlyemptyingalldrippansD、thoroughlydrainingallbunkeringhoses答案：A92.Avoltmeterispositionedacrossthebus-barstoindicatetheir.A、currentB、voltageC、powerD、Resistance答案：B93.Inanemergencysituation,forexampleintheeventofdamagetoafreshwatercoolerorgenerator,theseawaterpumpscanbeusedtosupplytothefreshwatercoolingsystem,merelybyremovingtheblind-flanges.A、seawaterB、freshwaterC、coolingoilD、anyoftheothers答案：A94.Oilissuppliedtothecrossheadusingaswingingarmora______andissometimesboostedinpressuretoaidefficientlubrication.A、telescopicpipeB、largeborepipeC、generatingpipeD、centralpipe答案：A95.Whetherusingacentrifugeorasimplefilter,oilcleaningandfiltrationwillbethemosteffectivewhentheoilisata_____.A、hightemperatureandahighviscosityB、hightemperatureandalowviscosityC、lowtemperatureandahighviscosityD、lowtemperatureandalowviscosity答案：B96.Thepartslabeled"IandII",shownintheillustrationareproperlycalledthe______.A、intakeandexhaustvalvesB、scavengingpoppetsC、fuelvalvesD、exhaustvalves答案：A97.Aconstantsupplyofelectricityisessentialforship,andthereforestandbyoradditionalcapacityisnecessarytogetherwith.A、distributionsystemB、freshwatergeneratorC、emergencysupplyequipmentD、alarmsystem答案：C98.Whatistheapplicationofhigh-speeddieselenginesatsea?①Theyareusedforemergencypowergenerationtosmallapplications.②Theyareusedforelectricalpowergenerationonboardshipsdrivenbymedium-speedpropulsionengines.③Theycanbeusedontugs,ferriesandbargesetc.asmainengines.A、①②B、②③C、③D、①②③答案：D99.Inanemergencysituation,forexampleintheeventofdamagetoafreshwatercoolerorgenerator,the____canbeusedtosupplyseawatertothefreshwatercoolingsystem,merelybyremovingtheblindflanges.A、seawatercoolerorgeneratorB、emergencyfirefightingpumpC、freshwaterpumpsD、seawaterpumps答案：D100.Theisameasureofthephasedifferencebetweenvoltageandcurrentandisexpressedasthecosineofphaseangle.A、powerB、efficiencyC、effectivepowerD、powerfactor答案：D101.Theengineerofficerinchargeofthewatchshallnotify

______immediately.in.the.eventoffire,impendingactionsinmachinery.spaces.that.may.cause.reduction.in.ship'sspeedorsimilarthreattosafety.A、thecaptainB、thechiefengineerofficerC、thepersononabunkerbargeD、thebridge答案：D102.Acircuitbreakerdiffersfromafuseinthatacircuitbreaker.A、meltsandmustbereplacedB、isenclosedinatubeofinsulatingmaterialwithmetalferrulesateachendC、givesnovisualindicationofhavingopenedthecircuitD、tripstobreakthecircuitandmaybereset答案：D103.Trunk-typedieselenginepistonsaremosteffectivelycooledbyheat______.A、conductedthroughtheengineblockB、conductedtowatercooledcylinderwallsC、conductedthroughthepistoncrownD、lossestoescapingexhaustgases答案：B104.EachpletedpageoftheOilRecordBookmustbesignedbythe_____.A、engineeronwatchB、chiefengineerC、chiefmateD、master答案：D105._____mayberequired,wheretheshipisdockedforhullcoatingrenewal,andforanyotherrequiredunderwaterworktobecarriedout,whentheopportunityistakentomakeotherrepairs.A、VoyagerepairsB、RoutinedockingC、DamagerepairsD、Conversion答案：B106.Foracontinuousoperationdieselengine,aduplexfilterunitwouldbethebestarrangementbecause____.A、changingfilterelementswouldnotinterruptengineoperationB、filteringoccurstwiceineachpassofoilthroughthesystemC、cloggingwillnotoccurD、droppingpressureishalfofthatthroughasinglefilterunit答案：A107.Boilerwaterhardnessisincreasedby.A、zeroalkalinityinthewaterB、scaleformingsaltsinthefeedwaterC、dissolvedgasesinthewaterD、improperoperationoftheDCheater答案：B108.Therotatingexciterarmatureisusuallymountedon.A、onaspecialplaceoftheengineroomB、outsidethegeneratorC、anotherexcitinggeneratorD、ahollowshaftextensionofthemaingeneratorrotor答案：D109.Lubricatingoilissuppliedtothecrankpinbearingsinamarinedieselengineby_____.A、internalcrankshaftpassagesB、immersioninoilC、splashlubricationD、injectionlubrication答案：A110.Accordingtothispassage,wecannotinferthat.A、thewaterinthepipehasveryhighpressureB、steamthatmeetsthecoolwatersurfacewillcondenseC、thebendoraclosedvalvewillpreventthewaterfrommovingD、itisnecessarytodrainthewaterinthepipingwhenadmittingthesteam答案：A111.Intheeventofminoremergencieswhenthemachineryspacesunattended,______willbeinformedofmalfunctionsinthemachinerybyhiscabinmonitorA、thechiefengineerB、theengineeroncabinwatchC、thebridgeofficeronwatchD、themaster答案：B112.Thegreatestdetrimental（危害性的）effectonidleelectricalequipment,suchascargopumpmotors,isthe.A、lossofresidualmagnetismB、absorptionofmoistureintheinsulationC、insulationvarnishflakingD、dirtcollectingonthewindings答案：B113.After-coolersareusedwithairpressorsto.A、reducethetemperatureofpressedairB、decreasethedensityofpressedairC、dampenpressurepulsesinthedischargeairD、ensurepleteexpansionofthepressedair答案：A114.Operatingconditionsinthecrankchamberarevery______thoseinthecylinder.A、thesameasB、similartoC、separatedfromD、differentfrom答案：D115.PSCinspectionisimplementedbythrough.A、flagstates/PSCOsB、flagstates/shipownersC、portstates/PSCOsD、portstates/shipowners答案：C116.Theformationofcarbonmonoxideindieselexhaustgasesisreducedby_____.A、sprayingwaterintotheexhaustpipeB、keepingtheexhaustsystemfreeofcarbondepositsC、maintainingproperbustionandscavengingD、avoidinglightloadoperation答案：C117.Enginespeedsatwhichresonance(共振)canoccuraretermed_____.A、maximumspeedsB、fullspeedsC、seaspeedsD、criticalspeeds答案：D118.Inadieselenginelubeoilsystem,whichofthefollowingpartsshouldbelubricatedfirst?A、CamshaftbearingsB、MainbearingsC、PistoncrownsD、Cylinderwalls答案：B119.Beforeshuttingoffthefuelsupplytostopamediumorhigh-speeddieselengine,whyisitnecessarytoallowtheenginetoidleforafewminutes?A、Topreventinternaldamagefromlocaloverheating.B、Toensurethefuelnozzlesareflushedclean.C、Toclearthesmokestack.D、Toletthewasteheatboilerreduceit'srateofsteamgeneration.答案：A120.Inaverticalmarineboiler,isfittedinthebustionchamber,onthefloorandsidesofthefurnace.A、uptakeB、smoketubeC、refractorymaterialD、accessdoor答案：C121.Theoperationoftwoalternatorsrequiresthevoltagestobeequalandalsoinphase.A、parallelingB、series-mountingC、runningD、Controlling答案：A122.AnInternationalShipSecurityCertificateshallbeissuedforaperiodspecifiedbytheAdministrationwhichshallnotexceed____.A、sixmonths.B、twoyears.C、fouryears.D、fiveyears.答案：D123.Electricalcircuitsareprotectedagainstoverheatingbymeansofa/an.A、circuitbreakerB、amplifierC、Diode(二极管)D、capacitor答案：A124.Theintakevalvesinadieselenginearereseatedby_____.A、camfollowersB、pushrodsC、bustiongasesD、valvesprings答案：D125.Whichofthefollowingstatementsisnottrue?A、Thevalveactuatorsareusedtoopenandclosethevalves.B、Electricactuatorscanbestoppedautomaticallywhentheymovetothelimitposition.C、Thevalvediscsoftheglobeorgatevalvescanonlybepushedorpulledinlinearmotion.D、Thediscofthebutterflyvalvecanbeturned90°.答案：C126.Themainpurposeofportstatecontrolisnotto___.A、preventanunsafeshipproceedingtosea.B、preventashipthreateningthemarineenvironment.C、finetheships.D、confirmasafesailing.答案：C127.ThepurposeoftheISMCodeistoprovide_____standardforthesafemanagementandoperationofshipsandforpollutionprevention.A、aregionalB、thebestC、aninternational

DD.anideal答案：C128.______areprovidedbetweenthebottomendbearingandthepalmoftheconnectingrod.A、pressionshimsB、GasketC、SpacerD、Washer答案：A129.Tomaintainthedesigndischargepressureofacentrifugalpump,theclearancebetweenthe.A、impellerandlanternringiscriticalB、impellerandcasingwearingringsiscriticalC、packingboxandpackingglandiscriticalD、glandsealandpackingglandiscritical答案：B130.Theinstrumentwhichtheemergencyswitchboarddoesn'tneedis.A、AmmeterB、voltageC、wattmeterD、synchronousmeter答案：D131.Howarethepressureandtemperatureaffectedinadieselenginecylinderduringpression?A、PressureandtemperaturedecreaseB、PressureandtemperatureincreaseC、PressuredecreasesandtemperatureincreasesD、Pressureincreasesandtemperaturedecreases答案：B132.EEDIrepresentstheamountofCO2in.A、g/teu/eB、g/teu/dwtC、g/dwt/eD、g/dwt/teu答案：C133.___________isusedtoensurethatshipsdonotdischargeOilwhenpumping0utbilgewater.A、TheoilseparatorB、TheoilywaterseparatorC、ThefilterD、Thestrainer答案：B134.PriortoclosingthebreakerwhenparallelingtwoACgenerators,theremendedpracticeistohavethefrequencyoftheiningmachineA、slightlylessthanthelinefrequencyB、thesameasthelinefrequencyC、slightlygreaterthanthelinefrequencyD、havenothingtodowiththelinefrequency答案：C135.Themainswitchboardismadeupoffollowingpartsexcept.A、bus-barB、parallelingpanelC、shorepowerboxD、machinerypanelofthemaingenerator答案：C136.Intheoilpurifier,theinterfacemoveoutsidethetopdisc,theoilwillescapethrough_____.A、thesludgepassageB、thesludgeoutletC、theobserveglasspassageD、thewateroutlet答案：D137.Therateofpressureriseduringtheperiodfollowingfuelignitioninadieselengineisinfluencedbythelengthoftheignitiondelayperiodduetothe_______.A、valveoverlapB、volumetricefficiencyC、turbulenceoftheairchargeD、fuelefficiency答案：C138.Whenthemainpowerisloss,theemergencygeneratorstarts;themainairswitchoftheemergencygeneratorclose______________.A、automatically/automaticallyB、automatically/manuallyC、manually/manuallyD、manually/automatically答案：A139.AllequipmentinSOPEPareusedfor_____.A、statesoilpollutionprevention.B、shipboardoilpollutionprevention.C、sewageoutletprevention.D、sewageoverflowprevention.答案：B140.Inanairconditioningsystem,lowheadpressureassociatedwithareciprocatingpressorcanbetheresultof

.A、brokenvalvespringsB、tightdrivebeltsC、highlinevoltageD、airinthesystem答案：A141.TheofficerinchargeofanengineeringwatchshallhavetheknowledgeofERMprinciples,includingobtainingandmaintaining___________.A、situationalawarenessB、safetyawarenessC、environmentalawarenessD、anti-pollutionawareness答案：A142.Thepotablewatermeans______.A、wastewaterB、thatthequalityistoopoortodrinkC、thefeedwaterforboilerD、drinkingwater答案：D143.Whichofthefollowingiswrongaboutoperationofoilywaterseparator?A、Filledwithcleanwaterbeforeoperation.B、Keepaircushioninoilcollectingspaceduringrunning.C、Checkoillevelduringrunning.D、Cleaninnerseparatorwithlowpressuresteam.答案：B144.Whenstartinganengine,thepressedairentersthecylinderwhenthecorrespondingpistonisinpositionofits_____.A、suctionstrokeB、pressionstrokeC、powerstrokeD、exhauststroke答案：C145._____isnormallyusedtotransferfuelfrombunkertankstothesettlingtanks.A、transferpumpB、AbilgepumpC、AservicepumpD、Avacuumpump答案：A146.Theinthestee