轮机英语历年真题42期

中华人民共和国海事局2007年第1期海船船员适任证书全国统考试题(总第42期)科目：轮机英语试卷代号：805适用对象：无限、近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。第1题至74题，每题1分，第75题至78题，每题1.5分,第79题至80题,每题10分。单项选择题The______engineisusedforalternatorsandsometimesformainpropulsionwithagearboxtoprovideapropellerofbetween90to120rpm.

A.four-strokeB.two-strokeC.slowspeedD.reversibleThedischargeflowofareciprocatingpumpis______.

A.steadyB.inpulsationC.continuousD.largeThecetanenumberofadieselfueloilindicatesits______.

A.viscosityB.acidcontentC.heatingvalueD.ignitionqualityAlwaysensurethattheturninggearis______,evenatthequay,thewavefromothershipsmayturnthepropellerandthustheengine.

A.disengagedB.engagedC.assembledD.disassembledCamshaftsareusuallydrivenbytiminggearsor______.

A.pushrodsB.chaindrivesC.rockerarmsD.flywheelsThecylinderoilispumpedintothecylinder(vianon-returnvalves)whenthepistonringspassthelubricatingorifices,during______.

A.theupwardstrokeB.thedownwardstroke

C.thepowerstrokeD.thesuctionstrokeThetotalstartingaircapacityrequiredforreversiblemainenginesistobesufficientforaleast______.

A.sixconsecutive(连续的)startsB.eightconsecutivestarts

C.tenconsecutivestartsD.twelveconsecutivestartsAdirtydieselengineoilfilterelementcanbestbedetectedby______.

A.visualinspectionoftheelements B.thepressuredropacrossthefilter

C.highlubeoilsumptemperature D.decreaseinoilviscosityfromthefilterBeforeamarinedieselengineisstartedthecylindersandpistonsmustbe______.

A.cooledtoappropriatetemperature

B.warmedupgraduallytoappropriatetemperature

C.openedupandrenewed

D.groundandpolishedAcontrollablepitchpropelleronadieseldrivenvesseleliminatestheneedfor______.

A.frictionclutchesB.disconnectclutchesC.reversinggearsD.reductiongearsThemaximumpressuredevelopedbyawasteheatboilerisdeterminedbythemainengineexhaust______.

A.gascomposition B.gastemperature C.pressure D.timing______continuouslyextractthecrankcaseatmosphere,viaapipesystem,andmoveitpastasensitiveandaccurateopacity(不透明)measuringtrack.

A.Theoilmistdetectors

B.Thesmokedetectors

C.Anoilywatermonitor

D.OildischargemonitoringandcontrollingsystemThewaterinasteamingauxiliaryboilershouldbetesteddailyfor______.

A.dissolvedoxygen B.chlorides

C.sludge D.dissolvednitrogenAfireboxexplosioninanautomaticallyfiredauxiliaryboilermaybetheresultof______.

A.excessivepurgingbeforelightingoff

B.insufficienttrailforignitionperiod

C.afaultytransformerintheignitioncircuit

D.insufficientpurgingafterlightingoffAfeedpumpforanauxiliaryboilermightlosesuctionifthe______.

A.boilerwaterlevelislowB.feed-wateristoohot

C.boilersteamdemandislowD.feed-wateristoocoldThegearandscrewpumpsareclassifiedas______.

A.variablestrokepumpsB.multistagepumps

C.positivedisplacementpumD.triple-portedpumpsThepressureofaliquidleavingthepumpcanbereferredtoasthe______.

A.totalhead B.dischargehead

C.netpositivesuctionheadD.suctionheadWhichofthevalveslistedwillbecycledfromfullyopentofullyclosedwhenthehandleisturned90degree?

A.ArisingstemgatevalveB.AglobestopvalveC.AcheckvalveD.AbutterflyvalveApumpshaftthatisbentordistortedshouldnormallybe______.

A.repairedbyasuitableweldingprocess

B.straightenedbyapplyingheatandtorsion

C.reconditionedbymetallizingandmachining

D.replacedwithasatisfactoryspareAcentrifugalpumpmayfailtodeliverwaterwhenfirststartedifthe______.

A.watersealpipeispluggedB.pumpisnotprimed

C.sealringisimproperlylocatedD.impellerisfloodedWhichofthefollowingconditionsmustexistforheattoflowfromoneobjecttoanother?

A.Thetwoobjectsmustbeinphysicalcontact.

B.Thetwoobjectsmustbethesamesize.

C.Theremustbeanexistingtemperaturedifferential.

D.Theremustbeanexistingweightdifferential.Thedewpointofairisreachedwhenthewetbulbtemperatureis______.

A.twicethedrybulbtemperatureB.10℃abovethedrybulbtemperature

C.5℃abovethedrybulbtemperatureIfairat95℃drybulbtemperatureand50%relativehumidityisconditionedto75℃drybulbtemperatureand50%relativehumidity,itisanexampleof______.

A.coolingonlyB.coolingandhumidifying

C.coolinganddehumidifyingInordertoachievegreaterdehumidification(除湿)withanairconditioningsystem,youshould______.I.reducethecoolingcoiltemperatureII.increasethere-heatertemperature

A.IonlyB.IIonlyC.BothIandIID.NeitherInorIIOilywaterseparatorsareusedtoensurethatshipsdon'tdischargeoilwhenpumpingout______.

A.ballastwaterB.boilerwaterC.bilgewaterD.sewagewaterWhenstarted,acompleteoilywaterseparatingunitisfirstfilled______.Theoilywatermixtureisthenpumpedthroughtheinletpipeintothecoarseseparatingcompartment.

A.withdirtywaterB.withcleanwaterC.byoilywaterD.bymixedwaterWhichisthepollutionpreventionequipment?

A.boosterpumpB.evaporatorC.incineratorD.coolerTheoilsludgeisburntinthe______onboard.I’llshowyoutheashes.

A.boilerB.mainengineC.auxiliaryengineD.incineratorMostmarinebiologicalsewagetreatmentplantsconsistofallthefollowingstatementsexcept______.

A.aerationtanksB.settlingtanksC.disinfectionagentD.anaerobicbacteria(厌氧菌)Greatcareisdedicatedtotheremovalof_____fromthescavengeair.

A.gravity B.viscosity C.density D.humidityDirtyoilmustbe_____beforebeingusedagain.

A.mixedwithcleanoilB.purifiedC.heatedD.strainedWhenavacuumboilingevaporatorworks,thehotjacketwaterwillpassoverthetubestackand___theseawaterpassingthroughthetubes.

A.disposeB.dissolveC.heatD.dissipatesWhensecuringaflash-typeevaporatorforanextendedperiodoftime,youshould______.

A.filltheunitwithsaltwaterB.filltheunitwithdescalingcompound

C.completelydraintheunitD.tightlysealtheunittoexcludeairAmongthebasiccategoriesofequipment,whichofthefollowingareusedtoallowthehydraulicenergytobecontrolled?

A.hydraulicpumpsB.valvesC.hydrauliccylindersD.hydraulicmotorsPositivedisplacement,helicalgear(斜齿轮)pumpsarewellsuitedforpumpingoilbecause______.

A.stuffingboxeseliminatetheleakageproblemsusuallyassociatedwithothergearpumps

B.itisnotnecessarytocloselymaintaindesignclearanceswiththispump

C.theyareessentiallyself-primingandproduceahighsuctionlift

D.thesepumpsaredesignedwithextremetoothanglesTheoilinacargowinchgearboxshouldbesampledperiodically(周期性地)to______.

A.preventthegearboxfromleaking

B.preventtheoilfrombecominginflammable(易燃的)

C.makesureithasnotbecomecontaminated(污染)

D.makesurethemotorbearingsarelubricatedIfananchorwindlasshasbeenidleforsometime,youshould______.

A.repackallvalvestemsB.lubricateitpriortouse

C.replacethefoundationboltsD.balancethewarpingheadsAmooringwinchshouldbeequippedwithmechanicalbrakescapableofholding______.

A.halfthebreakingstrengthofthemooringline

B.thefullbreakingstrengthofthemooringline

C.themaximumexpectedtension(张力)ofthemooringline

D.50%overtheworkingtensionofthemooringlineHydrauliccranesmustbeproperlywarmed-upbeforebeingoperatedbecause______.

A.warm-upallowsthehydraulicsystemtobecomechargedwithoil

B.warm-upallowsthereliefvalvestobeproperlytested

C.hydraulicstrainersoperateonlyduringthewarm-upperiod

D.hydraulicfluidmustbeattheproperviscosityThecurrentflowingfirstinonedirectionandtheninanotheriscalled____current.

A.arushB.analternating

C.adirectD.anexcitingThefrequencyofanalternatoratagivenRPMisdeterminedbythe______.

A.numberofturnsofwireinthearmaturecoil

B.numberofmagneticpoles

C.strengthofthemagnetsused

D.outputvoltageWhileparallelingtwoACgeneratorsusingsynchronizing(同步的)lampsonly,bothlampswillgodarkwhenthegeneratorsare______.

A.runningatthesamespeedB.grounded

C.ofthesamepolarity(极性)D.inphaseTheloadsharingcharacteristicsoftwodieselgeneratorsoperatinginparallelaremostlydependentontheirgovernor______.

A.loadlimitsettingsB.idlespeedsettings

C.speedlimitsettingsD.speeddroopsettingsElectricinsulationismadeoforganicsubstancesandsogradually______withage.

A.deterioratesB.increasesC.arefouledD.becomesbetterThemaingeneratorsareconnectedto______.

A.distributionboardsB.sectionboards

C.emergencyswitchboardsD.mainswitchboardsTheoperationof_____twoalternatorsrequiresthevoltagestobeequalandalsoinphase.

A.controlB.series-mounting

C.running D.paralleling______isamachinebywhichelectricalenergyistransformedintomechanicalenergy.

A.AnalternatorB.Anelectricmotor

C.Adieselengine D.AmainswitchboardAgroundinanelectricalcircuitoutsidetheengineroom______.

A.cannotbedetectedundernormalconditions

B.isofnoconsequencetoengineeringpersonnel

C.isindicatedatthebranchcircuitbreakerpanel

D.isindicatedbythegrounddetectinglampsonthemainswitchboardTimedelayedordelayedaction-typefusesaredesignedto______.

A.preventgroundsinbranchcircuits

B.preventopensinmotorcircuits

C.permitmomentaryoverloadswithoutmelting

D.guardlightingandelectroniccircuitsWhenvoltageandcurrentdevelopedinanACcircuitreachtheirpeakvaluesatthesametime,thepowerfactoris______.

A.laggingB.leadingC.maximumD.minimumWhenthereisafireinalargeelectricmotor,normallytheveryFIRSTstepisto______.

A.securetheelectricsupplyB.ventilateareatoremovesmoke

C.startthefirepumpandleadouthoseD.applyfoamBefore“standby”isrungontheenginetelegraph,itisusualtogivethemaindieselengineabrieftrial______aheadandastern.

A.withpowerB.onpowerC.withairD.onairBridgeordersmustbe______andarecordofanyrequiredchangesinspeedanddirectionshouldbekept.

A.slowlycarriedawayB.carriedoutwithaperiodofdelay

C.promptlycarriedoutD.paidbythecaptainAftertheorder'______'isgiven,theairsystemisshutdown,theturninggearputin.

A.FinishedWithEngineB.StopTheEngine

C.Stand-byEngineD.Slow-downEngineAtankhasbeensealedandunventilated(不通风的)foralongperiodoftime.Whichofthefollowingconditionsdoesthisindicate?

A.Thetankissafetoenter.

B.Thetankisespeciallydangeroustoenter.

C.Carbonmonoxide(一氧化碳)ispresent.

D.Watervaporpresentwhenthetankwassealedhasoxidized(使氧化).Firesinvolvingcombustiblemetalsareclassifiedas______.

A.class'A'firesB.class'B'firesC.class'C'firesD.class'D'firesThethreebasiccomponentsofafirearechainreaction,heat,fuel,and______.

A.carbonmonoxideB.oxygenC.carbondioxideD.anygaseoussubstanceCO2extinguishesafireby__________.

A.ablanketofbubblesformedonthesurfaceofthefire

B.smothering

C.isolatingtheheatfromthefuel

D.coolingSeawatermaybeusedfordrinkingwater______.

A.atamaximumrateoftwoounces(盎司)perday

B.aftermixingwithanequalquantityoffreshwater

C.ifgatherduringorimmediatelyafterahardrain

D.undernocircumstanceObviously,foragivenfueloil,itspourpointis______itscloudpoint.

A.lowerthanB.higherthanC.assameasD.betterthanNowthatthevalveisnotworth______,Isuggestit______.

A.torepair/renewingB.repairing/renewing

C.torepair/berenewedD.repairing/berenewedWhenavesselisindry-dock,thevessel'sengineersshould______.

A.examinetheconditionofthepropeller

B.chipandpaintallhullprotectionzincs

C.installnewdockingplugsinallcofferdams

D.inspectthehullforhoggingorsaggingTheadditionalmark______intheClassificationCertificateforMachineryrepresentsthepropulsionapparatusisremotelycontrolledonthenavigatingbridgecontrolstation,andengineroomiswatchedbydutypersonnel.

A.BRCB.MCCC.AUT-0D.AUT-1OilRecordBookPartIshallbeprovidedto______.

A.everyoiltanker

B.everyshipof400tonsgrosstonnageandabove

C.everyship

D.anyship“Inabilitytoprovideforthefirstwatchatthecommencementofavoyageandforsubsequentrelievingwatchespersonswhoaresufficientlyrestedandotherwisefitforduty.”isconsideredtobeoneofthedetainabledeficiencies(缺乏)under______.

A.theSOLASConventionB.theMARPOLConvention

C.theSTCWConventionD.theLOADLINEConventionThePortStateControlofficermaywitnessafiredrillcarriedoutbythecrewassignedtothesedutiesonthe______.

A.NavigationLogBookB.EngineRoomLogBook

C.OilRecordBookD.MusterListWhendecidingthecompositionoftheengineeringwatch,whichmayinclude_____appropriately,manyfactorsshallbetakenintoaccount.

A.satisfiedengineersB.qualifiedratings

C.satisfiedchiefengineerD.qualifiedchiefengineerDuringanengineroomwatchifimmediateactionisnecessarytoensuresafetyoftheship,itsmachineryandcrew,______.

A.thechiefengineermustbeinformedatfirst

B.thecaptainmustbeinformedatfirst

C.itmustbetakenbythedutyengineer

D.thegeneratorenginemustbestoppedOneofthemethodsNOTusuallyallowedincleaningupoilspillsintheUnitedStatesis______.

A.skimmersB.strawC.dispersantsD.sawdustAccordingtotheinternationalregulationsconcerningthepreventionofpollutionofseaareasfromships,thedisposalintotheseaofallplasticsis______.

A.welcome

B.admittedinsomespecialseaareas

C.prohibited

D.acceptableIncleaningupanoilspill,theuseofchemicalagentswould______.

A.absorbtheoilforeasyremoval

B.removetheoilfromthewater

C.disperse(分散)ordissolvetheoilinthewater

D.notaffecttheoilThemainobjectiveoftheSOLASConventionistospecify______fortheconstruction,equipmentandoperationofships,compatibletheirsafety.

A.atmostreferencesB.atleastreferences

C.maximumstandardsD.minimumstandardsTheseacidresiduesmustbepreventedfromenteringthecrankcase,otherwisethelubeoilwouldbe_______.

A.optimizedB.emulsifiedC.contaminatedD.oxidatedTheshipsecurityofficershallhaveknowledgeandhavereceivedtraining,takingintoaccounttheguidancegiveninPartBof______.

A.theISMCodeB.theISPSCodeC.theIBCCodeD.theIGCCode二、关联题（关联题题干下有4个小题，每小题4个选项）TheclearlyvisiblebenefitofRT-fle