11月航海英语机考题

阅读理解Passage92Avarietyofdevicesexistfordetectingfiresnamely:Smokedetectorsbasedontheionizationprincipleoronthephotoelectriccellprinciple;Healsensors;Rateoftemperaturerisesensors;Flamedetectors.Eachtypehasitsmeritsandmostsystemswilldeploytwoormoreoftheabovetypesofdevicesdependingonthespacebeingprotected.Withinmachineryspaces,ionizationsmokedetectorsaregenerallyconsideredthefirstlineofdefense.Thesedevicesmonitortheelectricalchargewhichoccurswhencombustionparticlesreachthechargedspaceinthedetector.Sothattheunitscanbereadilytestedanindicatorlightisprovidedonthesensorbody.Thislightsupinthepresenceofgasfromatestcanisterorevenfromthefamesoffacigarette.Whichofthefollowingdetectorsarebasedonthechargesorlightprinciple?A.SmokedetectorsB.HeatsensorsC.TemperaturerisingsensorsD.FlamedetectorsIngeneral,offiredetectorsarefittedonthecompartmentbeingprotected.A.onetypeB.twotypesC.threetypesD.fourtypesWithinengineroom,sensorsarearrangedcertainly.A.smokeB.heatC.temperaturerisingD.flameWhichofthefollowingstatementsistrue?Themoretypesoffiredetectorsarefittedonthespacebeingprotected,themorepossibleitistoavoidfirehazards.Flamedetectorsarebasedonthelightprincipleoffiredetection.Cigarettesmokingwillalwayscausefires.Atestcanisterimpliesitisunnecessarytosamplefumesfordetectionfire.ABAAPassage11MaintenanceandOverhaulingSatisfactoryandproperoperationoftheenginedependsnotonlyoncorrectmanoeuvringbutalsoonhowwellitiskeptinorder.Regularmaintenanceoftheenginehelpsalotinpreventingearlywearofpartsandinensuringalongserviceaswellastheworkingefficiencyoftheengine.Instructionbooksaretobereferredtowhenevernecessary.Theindividualpartsoftheengineshouldbeinspectedandthoroughlycleanedatregularintervals.Theperiodsforsuchoverhaulworkdependlargelyonthequalityofthelubricatingoilandfuel,ontheloadandoiltheefficiencyoftheoperatorinlocatingtroublesandremedyingthemmtime.Allpipesshouldbepressure-relievedbeforetherepairworkisstarted.Readthepressuregaugesand/orcheckthepipesbycarefullylooseningthescrewplugsorconnections.Ifsomepartsoftherunninggeararedismantled,beforeusingthefuminggear,makesurethatnoloosepartsarejammedinthecrankcasewhereitiseasyforthemtocausedamage.Duringdismantlingwork,lubricationlinesandorificesmusttosealedoff.Thepistons,asarule,shouldbedismantledafteraperiodofoperationandcleanedwiththepistonringsrenewedif注：在油水别离器中，油会向上运动到集油室的，应选A。"AccordingtoSTCW78/95,theabilitiesspecifiedinthestandardsofcompetencearegroupedassevenfunctionsatthreelevelsofresponsibility,whichofthefollowingisnotoneofthethreelevels?nA、supportlevelB、managementlevelC、operationallevelD、navigationallevel答案为Do”根据STCW78/95,适任能力划分为7个功能和三个级别，分别是支持级，操作级和管理级，所以D不是。”ThegovernorcontrollingadieselenginemodulatescrankshaftRPMakeairsupplyturbochargerspeedfuelinjectionpumpsenginespeeddroop注：调速器是通过调节燃油喷射泵，控制喷射进入气缸的燃油量来调节速度的，应选C。.Theisusedtomeasurethevolumeofaliquidorgasthroughapipelinewithinanygivenperiodoftime.A.flowmeter（流量计）B.viscometer（黏度计）C.micrometer（千分尺）D.feeler（塞尺）答案为Ao注流量计用于测量在给定时间内通过管子的液体或气体的体积。.Electricalcircuitsareprotectedagainstoverheatingbymeansofa（an）AcircuitbreakerB.ampMerC.diodeD.capacitor答案为A。注电路通常使用电路切断器防止过热。40、Theofficerinchargeoftheengineeringwatchshallensurethatatalltimesbridgeordersrelatingtochangesinofoperationareimmediatelyimplemented.A、foreandaftB、aheadorasternC、speedordirectionD、upordown答案为Co负责值班的轮机员应该确保任何时候关于速度和方向改变的驾驶台的命令应该立即执行。WhichofthefollowingaboutISMCodeisnotright?ItaimstoensuresafetyatseaItaimstoavoiddamagetotheenvironment.Itaimstopreventhumaninjuryorlossoflife.Itaimstoprovideamethodtorunacompany.注：ISM规那么的目的不是规定管理公司的方法，应选DoInthecontrolactionisindependentontheoutput.aclosedloopcontrolsystemanopenloopcontrolsystemaboilercontrolsystemasteeringgear注：在开环控制系统中，控制作用与输出无关，应选B。Thedieselengineisatypeofinternalcombustionenginewhichignitesthefuelbyinjectingitintohot,highpressureairina.A.airbottleB.aircompressorC.crankcaseDbustionchamber答案为D.柴油机是一种内燃机，燃油喷射进入燃烧室内高温高压的空气，并被引燃(combusingchamber=combustionspace)oDuringtherunningoffthedieselengine.Ifthesupplyofcoolingwaterisinterruptedorthetemperatureofcoolingwateroutofthecylinderistoohigh,thedutyengineershould.notifythedutyofficer,reducetheenginespeed,takesomemeasurestoremovefailuresnotifythedutyofficer,andstoptheengineerimmediately,finethecauseandremovefailuresC.notifytheC/ED.notifythecaptain答案为A。运行主机过程中，如果冷却水供给中断或冷却水HI口温度过高，值班轮机员应该通过当班驾驶员，减速，并采取一些措施使之恢复正常。Beforebeingshutdown,adieselengineshouldidleafewminutesinordertoApreventgovernorsurgingatshutdownBmakesurethefuelnozzlesareflushedcleanCpreventpressurebuildupinthefuellinesDpreventdamagefromlocalizedoverheating答案为D.在停车之前，为防止因局部过热导致损坏，应该让柴油机空载运转几分钟。DThesizeofthedischargeringusedfortheefficientoperationofadisktypepurifierisdependentuponthe.A.ratedcapacityofthatpurifierB.viscosityoftheoilbeingpurifiedC.maximumdesignspeedofthatpurifierD.specificgravityoftheoilbeingpurified答案为D.盘式分油机工作良好时排出环的尺寸决定于被别离燃油的比重。WhenparallelingtwoACgenerators,thefrequencyofthemachinecomingon-line,immediatelypriortoclosingitsbreaker,shouldbe.slightlylessthantheoncominggeneratorfrequencythesameasthebusfrequencyslightlygreaterthanthebusfrequencythesameasthebusvoltage答案为C。发电机并车操作时，在合闸之前的一刹那，待并机的频率应比电网频率稍高一些。Whenreceivedtheorder"FinishedWithEngine",whichofthefollowingoperationsiswrong?StoptheL.O.pump,SW.pump,FW.pump.StoptheprimingFOtransferpump.EngagetheturninggearOpenthescavengeairbelt'sdrainvalveandcovertheturbochargersilencerwiththedustproofcover(防尘罩).答案为A。当收到完车指令时，停滑油泵、海水泵和淡水泵的做法是错误的。AHoweverfastorslowthecombustionrate,itisstillabetweencarbon,hydrogen,sulphurandoxygenthatreleasesheat.A.physicaldeformationB.stateexchangeC.chemicalreactionD.coalescence答案为C。燃烧速率的快慢，仍然是碳、氢、硫和氧气笈生放热的一个化学反响。CCargohandlingunitisratedaccordingtothetobelifted.A.cargocraneB.jib（吊臂）C.safeworkingloadD.oilpressure答案为C。货物装卸设备根据装卸的安全工作载荷来标定。CWhichofthefollowingstatementsisleastlikelytocausetheignitionoffuelvapors?A.Staticelectricity.B.Anopenrunningelectricmotor.C.loosewiring.D.Explosionprooflights.答案为D.防爆灯一般不会引起燃油蒸气着火。Usuallyhandlesthemajorityofthecorrespondenceandnegotiationneededduringtransactionsofstoresandsparepartsintheenginedepartmentthechiefengineerthesecondengineerthethirdengineerthefourthengineer答案为A。在轮机部，物料和备件交易中所需的大多数通信联络及协商通常由轮机长处理.Aninadequatereciprocatingbilgepumpdischargeismostoftencausedby.defectivesaftyvalvescloggedsuctionstrainersscarredcylinderwallscloggeddrainvalves注：往复式舱底泵排量缺乏经常是由于吸入滤器堵塞造成的，选BoThedefectiveplaceinthefurnaceshouldbewithfirebricks.A.paved（砌或铺）BcleanedCweldedD.dismantled注炉膛损坏处应用耐火砖砌好。AHlntheeventofasmallbunkeroilspillondeckoccurringwhilebunkering,youshouldA、washdowntheareaimmediatelywithafirehoseB、washdowntheareawithkeroseneC、covertheareawithabsorbentmaterialD、covertheareawithfoamC如果甲板上发生少量溢油，应用吸收性材料覆盖。HIntheoilpurifier,theinterfacemoveoutsidethetopdisc,theoilwillescapethroughA、theobserveglasspassageB、thesludgeoutletC、thewateroutletD、thesludgepassageC对于分油机，分界面向外围移动，出水口跑油。Theactivatedsludgestrengthshouldbecheckedatregularinterval,anditisgoodthatthecoloroftheaerationcompartmentwateris.A.yellowB.chocolateC.blackishD.ivory-whiteBThePollutionPreventionRegulationsrequirethatalloilspillsinUnitedStateswaterbereportedimmediatelytothe.A.localportauthorityB.CorpsofEngineersC.U.S.CoastGuardD.statepollutionboard注：防污染条例要求在美国水域的任何溢油都要立即向美国海岸警卫队报告。CTheofficerinchargeoftheengineeringwatchshallensurethatallmachineryinvolvedwiththemaneLiveringoftheshipcanimmediatelybeplacedintheofoperationwhennotifiedthattheshipisincongestedwatersA.manualmodeB.automaticmodeC.remotemodeD.follow-upmode注值班轮机员应确保，当船舶航行在窄航道州与船舶操纵有关的所有机械都应处在手动操作模式。AMoistureabsorbedinthewindingsorcondensedonthesurfaceofelectricalmachineryinsulationAisgoodforlongtermpreservingsincemostinsulationisorganicandcontainssomeamountBlowerstheinsulationvalueandisacommoncauseoffaultgroundsinidlemachineswillenhanceinsulationresistanceonlyifitisfreshwaterandcontainsnosaltreducestheamountofcurrentsuppliedordrawnbythemachinesohorsepowerislimited注电气设备绝缘层吸收的水分将降低绝缘电阻，闲置的设备会引起接地故障。B61.isusedtopreventtheentryofseawatertothemachineryspaceA.AspecialsealingglandB.PropellerC.TailshaftD.Sterntubebearing注解轴管轴承可防止海水进入机舱。D未找到的有：aflamescreenthedewpointisreachedwhenthewetbulbtemperatureis.3.leastlikelytocausetheignitionoffuelvapors?4.isusedtopreventtheentryofseawatertothemachineryspace.5.bilgesmaybepumpednecessary.Ifthepistonrodstuffingboxiscarefullyhandledandthoroughlygreased,itrequiresoverhaulonlywhenthepistonisremoved.Insuchacase,thegapclearanceofthesealingringsandfireringsmustberesettotheoriginalvalueandtheworn-outpartsreplaced.Tokeeptheengineworkingproperly.everydaymaintenanceisnecessaryitmustbehandledwithinstructionbooksiiihand'enginepartsshouldbekeptinorderitshouldbemanoeuvredcorrectlyandmaintainedatregularintervalsTheperiodsforoverhaulmainlydependon.©whetherthelubricatingoilandfuelareofgoodquality②whattheloadoftheshipis©whethertheoperatorcanfindtroublesaswellassolutionstothemquicklyA.①②B.①C.②③D.①②③Itisnecessarytomakesurethattherearenoloosepartsleftmthecrankcasebeforeusingtheturninggearbecause.somepartsoftherunninggearhavebeendismantledduringdismantlingwork,lubricationlinesandorificesaresealedoffloosepartsjammedinthecrankcasearelikelytocausedamagepipesarerelievedofpressurebeforetherepairworkWhendoesthepistonrodstuffingboxrequireoverhaul?Wheatsomepartsarewornout.Whenthepistonisremoved.Whenithasnotbeencheckedforsometime.Whenthepistonringsneedtoberenewed.DDCBPassage52Theengineperformanceisusuallyevaluatedbycomparingthemwiththecorrespondingobservationsfromwhentheshipwasnew.Thebestandmostsimplemethodofsummarizingandobtainingaclearpictureoftheparameterchangesistousethesynopsisdiagram,whichincludesamodelcurveandanactualservicecurve.Thesecurvesillustratethefunctionalrelationshipbetweenthemeasureddataandtheparametertheyaremostdependentonorrelatedto.Adeviationcurvecanalsobedrawnbasedontheabove-mentionedtwocurves.Fromthedeviationcurve,itispossibletoeasilyfollowthedevelopmentandtodeterminewhichenginecomponentsshouldbeoverhauled,andalso,fromtheslopeofthecurve,todetermineapproximatelywhentheoverhaulshouldbecarriedout.Themeanindicatedpressureisaveryimportantparameter,andit,toacertainextent,representstheengineoutput,thereforethedataofmanyotherimportantparametersareanalyzedasthefunctionofthemeanindicatedpressure.Inasynopsisdiagramoftheenginerevolution,deviationsfromthemodelcurveshowwhetherthepropellerislightorheavy,i.e.whetherthetorqueonthepropellerissmallorlargeforaspecifiedenginerevolution.Itispossibletojudgewhetherthealterationsareduetochangesinthedraught,oranincreaseinthepropulsionresistance,forinstanceduetofoulingofthehull.Valuableinformationisherebyobtainedfordeterminingasuitabledockingschedule.

Bywhichcurvecanwedeterminesomeenginecomponentsshouldbeoverhauled?A.AmodelcurveB.AnactualcurveC.AMIPcurveD.AdeviationcurveAccordingtothepassage,toacertainextent,theengineoutputmaybeindicatedby.A.thetorqueonthepropellerB.thefoulingofthehullC.theRPMoftheengineD.theMIPoftheengineTheword“deviation“inthispassagemeans.A.thesynopsisdiagramB.themodelvalueC.theactualvalueD.thedifferencebetweenBandCThetorqueonthepropellermayvarywith.A.changesintheship*sdraughtB.anincreaseinthepropulsionresistanceC.foulingoftheship'shullD.alltheaboveDDDDPassage56StartingairdistributorThestartingairdistributorisofthepistontypewithprecisionmachinedinterchangeableliners.Thelinersaswellasthepilotpistonsareofcorrosionresistantmaterials.Thepilotpistonsarecontrolledbyacamconnectedtothecamshaftend.Whenthemainstartingvalveopens,thepilotpistonsarepressedontothecam,wherebythepilotpistonfortheenginecylinderwhichisinstartingpositionadmitscontrolairtothemainpistonofthestartingvalve.Thestartingairvalveopensandadmitscompressedairintotheenginecylinderforcingthatpistondown.Shortlybeforetheexhaustvalvesareopenedthepilotvalveinterruptsthecontrolairtothestartingairvalveandstartingairtothatcylinderisstopped.Thisprocedurewillberepeatedaslongasthemainstartingvalveisactivatedoruntiltheenginespeedissohighthattheenginefires.Afterthemainstartingairvalveisclosed,themainstartingairsystemisde-aerated,thepressuredropsquicklyandthespringswillliftthepilotplungersoffthecam.Thismeansthatthepilotplungerstouchthecamonlyduringthestartingprocessandthuswearisinsignificant.Ifapilotlineriswornout,pressitout.Itmaybenecessarytoheatthedistributoruptillabout200℃as“Loctite“isusedforfixingandsealing.Accordingtothepassage,thelinersofthestartingairdistributor.A.canbereplacedwhenwornoutB.aremadeofheatresistantmaterialsC.areweldedpreciselyD.arewornouteasilyduringthestartingprocessDuringthestartingprocess,when,themainstartingairvalveisclosed.theexhaustvalvesinthestartingcylinderareopenedthepilotairtothestartingairvalveisstoppedtheenginespeedreachesfirespeedthepilotpistonsarepressedontothecamWhensomecylinderoftheengineadmitscompressedairintoit,thepilotpistonofthestartingairdistributorshouldbe.A.separatedfromthecamC.liftedoffthecamB.pressedontothecamA.separatedfromthecamC.liftedoffthecamFromthepassageweknowthat“Loctite"isprobably.A.atypeofgasketB.akindoflubricantC.agluebondD.ananti-corrosionadditiveACBCPassage39SOLAS,ChapterIX,andtheISMCodeappliestoships,regardlessofthedateofconstruction,asfollows:Passengerships,includingpassengerhigh-speedcraft,notlaterthan1July1998;Oiltankers,chemicaltankers,gascarriers,bulkcarriersandcargohigh-speedcraftof500grosstonsormore,notlaterthan1July1998;Othercargoshipsandmobileoffshoredrillingunits(MODUs)of500grosstonsormore,notlaterthan1July2002.TheCode'soriginscanbetracedbacktothelate1980s,whenconcernwasgrowingaboutpoormanagementstandardsintheshippingindustry.In1989,IMOadoptedGuidelinesonmanagementforthesafeoperationofshipsandforpollutionprevention"toprovidethoseresponsiblefortheoperationofshipswithaframeworkfortheproperdevelopment,implementationandassessmentofsafetyandpollutionpreventionmanagementinaccordancewithgoodpractice.nTheseguidelineswererevisedinNovember1991andtheISMCodeitselfwasadoptedasarecommendationin1993.However,alterseveralyearsofpracticalexperience,itwasfeltthattheCodewassoimportantthatitshouldbemandatory.ItwasdecidedthatthebestwayofachievingthiswouldbethroughtheInternationalConventionfortheSafetyofLifeatSea,1974(SOLAS).Thiswasdonebymeansofamendmentsadoptedon24May1994,whichaddedanewChapterIXtotheConventionentitledManagementforthesafeoperationofships.TheCodeitselfisnotactuallyincludedintheConvention,butismademandatorybymeansofareferenceinChapterIX.Accordingtothepassage,aLNGcarrierbuiltin1996shouldcomplytheISMCode.A.notlaterthan1July1996B.notlaterthan1July1998C.notlaterthan1July2002D.notlaterthan1July2004TheISMCode'soriginscanbetracedbackto.A.theyearof2002B.theyearof1998C.theyearof1989D.theyearof1980TheISMCodebecametobemandatory.A.throughtheSOLASB.in1974C.in1991D.in1993WhichofthefollowingisTRUE?TheISMCodeitselfisactuallyincludedintheSOLASConvention.TheISMCodeismademandatorybyareferenceinChapter9oftheSOLASConvention.AnewChapterIXtotheSOLASConventionisentitled"InternationalSafetyManagement”.hispassageismainlyonthecontentsoftheISMCode.BCABPassage99Acentrifugalfeedpumpmustnotbeoperatedunlessitisfullyprimed.Thepumpcasingshouldbefilledbeforestarting,thesuctionpipeandpipebranchtothedischargestopvalvemustalsobefull.Ifthewaterentersthepumpsuctionbygravity,primingisunnecessaryandthepumpwillremainfullofwaterwhenshutdown.Tofillthepump,openthesmallair-valveonthetopofthepumpcasinguntilwatercommencestoflow,thenshuttheair-valve.Ifthepumpisoperatingwithasuctionlift,itmaybeprimedeitherfromanindependentwatersupplyorfromthedischargeline,orbymeansofaventconnectionorexhausterwhichwillevacuatethepumpandsuctionpipingofair.afootvalvemust,ofcause,hefittedinthesecases.Thedischargevalveandair-valvesshouldbekeptclosedduringtheprimingofthepunyifdonebythelattermethods.Whichofthefollowingshouldnotbedonebeforethecentrifugalpumpisstarted?A.PrimingB.OpeningtheventC.ClosingthedischargestopvalveD.OpeningthesuctionstopvalveWhichofthefollowingstatementsisnottrue?Ifthepumpisrunningwithagravity,primingisimportant.Tofillthepumpcasingitisnecessarytoopentheairvent.Whenthewaterflowsfromtheairvent,itmeanspriminghasaccomplished.Thesuctionpipe,thepumpcasingandthepipetothedischargestopvalvemustbeprimedtoo.Accordingtothispassage,wecaninferthat"Afootvalve“ismostprobably.A.astopvalveB.acheckvalveC.anairvalveD.asuctionvalveThephrase“thelattermethods^^inthelastsentencemeans.A.anindependentwatersupplysystemB.agravityprimingsystemC.anexhaustersystemD.adischargelineprimingsystemCABC未找到：Theevaporator-distillervesselmaybeofcupro-nickelorothernon-corrodiblematerialoragain....选择题AgearpumpbelongstoaccordingtoitsworkingprincipleA.reciprocatingpumpsB.positivedisplacementpumpsC.centrifugalpumpsD.centripetalpumps答案为B。根据工作原理，齿轮泵属于【容积泵】。Whichofthefollowingshouldalwaysbecheckedpriortostartingadieselengine?A.AirfiltersB.FueloilstrainersC.CrankcaseoillevelD.Pyrometerreadings答案为C。启动柴油机之前应该检查曲柄箱油位。Inordertolimittheintroductionofalienspeciesbyships,wasadoptedon13Feb2004attheIMO.revisedMARPOLAnnexIrevisedMARPOLAnnexIIInternationalConventionfortheControlandManagementofShip'sBallastWaterandSedimentsISPSCode答案为C。为了限制由船舶带进外来物种，IMO于2004年2月13日通过了【《控制和管理船舶压载水和沉积物国际公约》】。TheISMCodeisapartof.A.SOLASB.MARPOLC.STCWD.BallastWaterConvention答案为A。ISMCode是SOLAS的一局部。Timedelayedordelayedaction-typefusesaredesignedto.preventgroundsinbranchcircuitspreventopensinmotorcircuitspermitmomentaryoverloadswithoutmeltingguardlightingandelectronicconditions答案为C。延时作用式熔断丝设计成【在瞬时过载时不会熔断，AccordingtotheISPSCode,forasailingship,thefollowingexceptshouldbeonboard.ashipsecurityplanashipsecurityofficeracompanysecurityofficercertainonboardequipment答案为C。根据国际船舶与港口设施保安规那么，对于一艘航行中的船舶，以下选项中除了【公司安全员】以外都需要在船上。Theabbreviation"ERM"intheManilaAmendmentstotheSTCWConventionstandsforA.EngineRoomManagementB.EngineResourcesManagementC.EngineerResourcesManagementD.Engine-roomResourcesManagement答案为D。STCW78/95Conventiondescribesthatarelaiddownforthecertificationofengineerofficersinchargeofawatchinatraditionallymannedengineroom,orthedesignatedengineerinaperiodicallyunmannedengineroom.A.availableminimumrequirementsB.availablemaximumrequirementsC.mandatoryminimumrequirementsD.mandatorymaximumrequirements答案为C。STCW公约规定的是有关船员培训、发证和值班的【强制性最低要求】。nInthevoyage,whencarryingoutabandonshipdrill,shouldbetestedeverytime.A、M.E.emergencyoperationB、main/auxiliarysteeringgearchangingC、air/oilemergencyshut-downD、theemergencylightingsystemformusterandabandonship答案为D.航行途中，每当进行弃船演习，应测试集合及弃船（站）的应急照明系统。Dualelectro-hydraulicsteeringusuallyoperate.withbothpumpsonlineatthesametimewithonepumponstandbywiththefollow-upgeardisconnectedonlywhentherudderismovedamidships答案为B。双作用电液舵机通常【有一个备用泵】。11.isnotonthecontrolpaneloftheemergencygenerator.A、voltagetransformerB、currenttransformerC、reverse-powerrelayD、voltageregulationdevice答案为C.逆功率继电器不安装在应急发电机的控制屏上。Theengineerinchargeshouldnotifytheintheeventofanyseriousoccurrenceorasituationwhereheisunsureoftheactiontotake.A.captainB.dutybridgeofficerC.chiefengineerD.secondengineer答案为C。在定航值班期间，假设发生严重事件而值班轮机员不能确定采取何种措施时应立即通知【轮机长】。Blacksmokecomingfromaboilercanbecausedby.A.lowwaterlevelB.excessivelyhighfuelpressureC.lowoilpressureD.improperair/fuelratio答案为D。空气/燃油比例不合适（空气太少），会使锅炉排气冒黑烟。Ovideanareawhereaircanseparatefromtheoilprovideanareatoseparatesolidcoractasanoilandwaterseparatorabsorbshocksoccurringinthesystem注蓄压器作用之一是消除液压系统的冲击。DAcargoholdhasbeendeterminedtohavearelativehumidityof80%andadrybulbtemperatureof80℃.Whentheholdissealedandthedrybulbtemperaturedecreases,therelativehumidityinthespacewill.A.decreaseB.increaseC.decreasetozeroD.remainunchanged注货舱内相对湿度是80%,干球温度是80℃,当货舱被密封，温度降低时舱内相对湿度将会增加。BUMSaremainlyunattendedovernightandduringthistimeshouldhavecontrolofthemainengine.A.thechiefengineerBtheengineeroncabinwatchC.thebridgeofficeronwatchDthemaster注无人机舱主要是夜间无人值班，在期间值班驾驶员应控制主机。CWhichofthetermslistedbelowrepresentstheoperationalspeedatwhichexcessiveenginevibrationiscreated?A.Non-harmonicspeed.B.Criticalspeed.C.Maximumspeed.D.Designmaximumspeed.注柴油机在临界转速下振动最大。BaccordingtowhatistheCargohandlingequipmentrated.A.cargocraneB.safeworkingloadC.jibD.oilpressure答案为B。货物装卸设备是根据起吊货物的【安全工作负荷】来确定额定转速。Aclass"C"fireisburning.A.dieseloilB.magnesiumC.dunnageD.electricalinsulation答案为D。AfireinvolvingaluminumpowderwouldbeaClass.A.AfireB.BfireC.CfireD.Dfire答案为D。铝粉着火是【D类火灾】。Theformationofcarbonmonoxideindieselexhaustgasesisreducedby。sprayingwaterintotheexhaustpipekeepingtheexhaustsystemfreeofcarbondepositsmaintainingpropercombustionandscavengingavoidinglightloadoperation答案为CCylindersofmarinedieselenginesarenormallycooledby.A.seawaterBsanitarywaterC.finemineraloilD.freshwater答案为D。船用柴油机的气缸一般都用淡水冷却。Thecommonmethodofapplyingoiltothecylinderwallsisbymeansofsmallpumpassembledinunits,knownas.A.mechanicallubricatorB.forcedfeedsystemC.lubricationfunctionD.lubeoilheater答案为A。向气缸壁供油的常用方法是采用小型油泵，即机械式注油器。OilRecordBookPartIshallbeprovidedto.A.everyshipof400tonsgrosstonnageandaboveB.everyoiltankerC.everyshipD.anyship答案为A。Ifyounoticesmokecomingfromthecrankcaseexhaustfanoutletofanopera