轮机英语大证考试模拟题(三)

1轮机英语大证模拟试题(三)1.Inpurification,thereisnofueloilinthecleanoiloutlet.Itcouldbecausedby____.①toohightemperatureofthedirtyfueloil;②toolowtemperatureofthedirtyfueloil;③cloggedfilterA.①B.①②③C.②③D.②2.Whichofthefollowingwouldnotbeburntinanincinerator(notratifiedbyIMO)onboard?A.oilragsB.PVCgarbageC.wasteoilD.wasteclothes3.Whichofthefollowingstatementsiscorrectconcerningtheviscosityoflubricatingoil?A.Viscositywillincreaseastemperatureincreases.B.Viscosityisameasureofafluid'sinternalresistancetoflow.C.Viscosityisnotdependentontemperature.D.Viscositywilldecreaseastemperaturedecreases.4.Whichofthefollowingconditionswouldcause“panting”inasteamingauxiliaryboiler?A.Faultyflamescanner.B.Flamefailure.C.Insufficientcombustionair.D.Lowwaterlevel.5.Beforereplacingapistonyoushouldcheektheringstoseethatallclearancesandgapsarewithinthepermissible____.A.discrepancyB.errorC.deflectionDtolerance6.Whileonwatchintheengineroom,youhearacontinuoussoundingofthegeneralalarm.WhichofthefollowingactionsshouldyoutakeFIRST?A.Startthefirepumpandestablishflowtothefiremain.B.Opentheguardianvalveandstandbytomaneuver.C.Securetheburnersthenproceedtoyourassignedboatstation.D.OpenthemastercontrolvalvesonthefixedCO2system.7.Thefunctionofdieselenginepistoncompressionringsisto____.A.removeoilfromthecylindercombustionspaceB.transmitheatfromthepistontothecylinderlinerC.preventenginefrictionlossesD.preventpistonsidethrust8.Dieselengineautomatedcontrolsystemsmayutilizesensingdevicesofdualfunctionwithsensingrangesprovidingbothalarmandengineshutdowncapability.Whichofthekeypointswouldonlyrequireanalarmsensor?A.Jacketwaterpressureandtemperature.B.Lubeoilsumplevel.C.Lubeoilpressureandtemperature.D.Engineover-speed.9.Theactivatedsludgestrengthshouldbecheckedatregularintervals,anditisgoodthatthecoloroftheaerationcompartmentwateris_____.A.blackishB.chocolateC.ivory-whiteD.yellow10.Whichofthelisteditemsshouldbesecuredbeforeperforminganymaintenanceonasolenoidoperatedairstartvalve?A.Hydraulicswitchandengagejackinggear.B.Motordrainandpneumaticcontrolsystempower.C.ElectricpowerandstartingairD.Lubeoilstandbypumpandcontrolair11.Down-comersinstalledonauxiliarypackageboilerareprotectedfromdirectcontactwithhotgasesby_____.A.steelbaffleB.waterwalltubesC.refractoryandinsulationD.severalrowsofscreentube12.Whichfactordeterminestheringdamsizeforafueloil，tubular(管子型)bowltype,centrifugalpurifier?A.Thespecificgravityofthefuel.B.Theviscosityoffthefuel.C.Thequantityofwatertoberemovedfromthefuel.D.Thequantityofdirttoberemovedfromthefuel.13.Fromtheseparatorthefuelenters____forHFO.DrainvalveSettingtankHFOHFOMDOFuelpumpsEngine2A.thedoublebottomtankB.theseparatoroiltankC.thedailyservicetankD.thesettingtank14.Whensecuringaflash-typeevaporatorforanextendedperiodoftime,youshould____.A.filltheunitwithsaltwaterB.completelydraintheunitC.tightlysealtheunittoexcludeairD.filltheunitwithde-scalingcompound15.Itisnecessaryfortheshiptocontact____forauthorizationpriortoundertakingmitigatingactionsinanoilpollutionincident.A.theshippingcompanyB.thecoastalstateC.theflagstateD.theportstate16.Incleaningupanoilspill,theuseofchemicalagentswould____.A.disperseordissolvetheoilinthewaterB.notaffecttheoilC.removetheoilfromthewaterD.absorbtheoilforeasyremoval17.Undernormalconditions,thequantityofaircirculationbecomeslessandless.Whatisthereason?A.Dirtydeliveryducts.B.Hightemperatureoutside.C.Toomuchrefrigerant.D.Thefoulingfilters.18.Electricinsulationismadeoforganicsubstancesandsogradually____withage.A.becomesbetterB.deterioratesC.increasesD.arefouled19.AccordingtotheSOLASconvention,theengineroomemergencybilgewatersuctionshouldconnectwith____.A.themainS.W.pumporballastpumpthathavethebiggestoutputB.theair-conditioningwaterpumpC.theballastpumpD.themainS.W.pump20.Theelectrolyteinalead-acidstoragebatteryconsistsofdistilledwaterand____.A.calciumchlorideB.muriaticacidC.hydrogenchlorideD.sulfuricacid21.Arigidlinerborewhichisfreeof_____isidealand,withtheprovisionofgoodlubrication,providesoptimumrunningconditionforthepistonandpistonrings.A.expansionB.distortionC.shrinkageD.elongation22.WhenreenteringanengineroomthathasbeenfloodedwithCO2,theinvestigatingteamshouldinitially____.A.attempttooperatemachineryB.enterfromthelowestlevelC.leavetheaccessdoorpartiallyopenD.enterfromthehighestlevel23.Aconstantsupplyofelectricityisessentialforship,and24.WhenmakingentriesintheOilRecordBook,allquantitiesshouldbe____.A.recordedascubicmeterswithaconversiontobarrelsB.verifiedbytheChiefEngineerC.recordeddirectlyfromtheoildischargemonitorD.consistentlyrecordedthroughtheOilRecordBookinonespecifiedunit(gallons,barrels,cubicmeters)25.Anincreasedpressuredifferentialbetweentheinletandoutletofastrainerusuallyindicatesthestraineris____.A.holedB.dryC.cleanD.fouled26.ACandDCgeneratorsaresimilarinthatthey____.A.bothrectifythevoltagebeforedeliveryB.bothsupplythree-phasepowerC.areconstructedatthesamephysicalsizeforthesamekilowattratingD.bothgeneratealternatingvoltages27.Ifemergencyweldingrepairsmustbemadetotheupperareaofafueltank,thetankand/oradjacentcompartme