輪機(jī)英語選擇附有答案

輪機(jī)英語選擇[復(fù)制]1.The_____engineisusedforalternatorsandsometimesformainpropulsionwithagearboxtoprovideapropellerofbetween90to120rpm.[單選題]*Afour-stroke(正確答案)Btwo-strokeCslowspeedDreversible2.Sincetheburningorcombustiontakesplacewithintheengineitself,theengineisknownas_____.[單選題]*Aafire-tubeboilerBaninternalcombustionengine(正確答案)CanexternalcombustionengineDaninternalcombustiongenerator3.Wherewillthethrustforcesfromthepropellerbetransferredtothroughathrustbearing?[單選題]*AThehulloftheship.(正確答案)BTheengine.CThegearbox.DThecrankshaft.4.Sincemostmedium-speeddieselenginesarenon-reversible,whatisusuallyusedtocaterforasternthrust?[單選題]*AareversinggearBacontrollablepitchpropeller(正確答案)CafixedpitchpropellerDaclutch5.____speedenginesoperateinspeedrangesfrom300to1000rpm.[單選題]*ASlowBMedium(正確答案)CHighDDeadslow6.Thethreelargestcategoriesofshipsarecontainerships,_____(forbulkgoodssuchasgrain,coal,ores,etc.)andtankers,whichagaincanbedividedintomorepreciselydefinedclassesandtypes.[單選題]*Abulkcarriers(正確答案)BgeneralcargoshipsCpassengershipsDreefers7.Increasingthecompressionratioofadieselenginewhilemaintainingthedesignedrateoffuelflowwillresultin_____.[單選題]*Aincreasedhorsepower(正確答案)BreducedefficiencyCincreasedheatlossDlowercylinderpressures8.Effectivehorsepoweristhepowerdevelopedbythe_____inthecylinder,butsomeofthisislostbyfrictionwithintheengine.[單選題]*AcrankshaftBcrankCconnectingrodDpiston(正確答案)9.Forthedieselengine,theoperationbetweentwofueloilinjectionsiscalleda_____,whichconsistsofafixedsequenceofevents.[單選題]*Acycle(正確答案)BperiodCrevolutionDcircle10.Thetermusedtoexpresstheignitionqualityofaparticularfuelis_____.[單選題]*Athecetanenumber(正確答案)BoctanenumberCignitionindexnumberDvolatilitypoint11.Apistoninafour-stroke/cycledieselenginemakesfourstrokesduringeach_____.[單選題]*AcrankshaftrevolutionBmechanicalcycleofoperation(正確答案)CperiodoftwocombustioncyclesDcycleoftwoevents12.Foranordinaryfour-strokeenginetheexhaustvalvesopen_____.[單選題]*AafterTDCBbeforeTDCCafterBDCDbeforeBDC(正確答案)13.Foranordinarymodernmarinefour-strokeenginetheinletvalvesopen_____.[單選題]*AafterTDCBbeforeTDC(正確答案)CafterBDCDbeforeBDC14.Fueloilbeginsinjectionintothecylinderofafour-stroke/cycledieselengineduringthe_____.[單選題]*AintakestrokeBexhauststrokeCpowerstrokeDcompressionstroke(正確答案)15.Duringwhichofthelistedpistonstrokeofafour-stroke/cycledieselengine,isthepistonmovingdownward?[單選題]*AIntakestroke(正確答案)BCompressionstrokeCExhauststrokeDPumpingstroke16.Fuelinjectionbeginsduringthecompressionstroke,beforethepistonreaches_____.[單選題]*AtopcenterBbottomcenterCTDC(正確答案)DBDC17.Whatiscommonlyusedtocreateturbulenceinadieselenginecombustionsystem?[單選題]*AShapeofthepistoncrowns(正確答案)BIncreasingthecompressionratiosCIncreasingthepistoncrownsDIncreasingtheturbochargergearratio18.____pistonshavelowinertiaandhighcoefficientofthermalexpansion.[單選題]*ACastironBCaststeelCForgedsteelDAluminum(正確答案)19.Connectingrodsinatrunk-pistondieselengineareusedtoconnectthe_____.[單選題]*AenginetothebedBrockerarmtothecamshaftCcrankshafttothegeartrainDpistontothecrankshaft(正確答案)20.Theuppersectionofapistoniscalledthe_____.[單選題]*AlandBskirtCcrown(正確答案)Dplate21.Thepurposeoftheflywheelofadieselengineisto_____.[單選題]*AcounterbalancethecrankthrowsonthecrankshaftBkeeptheenginerunningsmoothlybetweenpowerstroke(正確答案)Cprovideabelt-drivingsurfacefortheoperationofauxiliarymachineryDpreventtheenginefromover-speeding22.Combustiongasesformedinthecylinderofadieselenginearepreventedfromblowingpastthepistonby_____.[單選題]*AcylindervalvesBcompressionrings(正確答案)CpistonskirtsDoilrings23.Anacceptablemethodofmeasuringforthecorrectrotationalforceappliedtotheconnectingrodandmainbearingbolts,istousea_____.[單選題]*Atorquewrench(正確答案)BmonkeywrenchCpipewrenchDsluggingwrench24.Pistoncrownsareofthedishedtypetoprovide_____betweenthepistoncrownandthecylinderhead.[單選題]*AcombinedchamberBaturbochamberCapresschamberDacombustionchamber(正確答案)25.Anumberofcylinderlinersareenclosedinonecastironcasingtoforma_____.[單選題]*AcylindercoverBcylinderblock(正確答案)CcylinderframeDbed-plate26.Oneendofacylinderforamediumorhigh-speeddieselengineissealedbythepistonandrings,theotherendissealedbythe_____.[單選題]*AcrankcaseBcylinderhead(正確答案)CvalvecoverDengineframe27.Smallerenginescanbemademorerigidthanlargeonesandmaynothave_____.[單選題]*AconnectingrodsBcrankshaftCcrankcaseDthroughbolts(正確答案)28.Thepistonrodstuffingboxincorporatedinatwo-stroke/cycle,crossheaddieselengineservesto_____.[單選題]*AeliminatethenecessityforanoilscraperringBpreventsidethrustandcylinderscoringCpreventsludgeanddirtyoilfromenteringthecrankcase(正確答案)Dscrapeoilandcarbondepositsoffthecylinderwalls29.AtthetopoftheA-framesthereisastrongcastironframecalled_____.[單選題]*AcylinderlinerBcylindercoverCthegearboxDthescavengingbox(正確答案)30.Sealingbetweenthecrankcaseandscavengingairboxesisachievedbymeansofpistonrod_____locatedinthebottomofthescavengingairboxes.[單選題]*AsealingringBglandCbaffleDstuffingboxes(正確答案)31.Theexternalcircumferenceofapairofmainbearingshellsisslightlylargerthanthatoftheboreofthehousingwhichreceivesthem.Thedifferenceistermed“_____”.[單選題]*Anip(正確答案)BnapCgapDlip32.Mainbearingsformediumspeedenginescurrentlyinuseareofthe_____type.Similarbearingshellsareemployedforbottomendbearings.[單選題]*AballBintegrityCthinshell(正確答案)Dthickshell33.Ifafour-stroke/cycledieselengineisrunningat1550RPM,thespeedofthecamshaftwillbe_____.[單選題]*A525RPMB775RPM(正確答案)C1550RPMD1800RPM34.Heatforignitingthefueloilinthecylinderofadieselengineisgeneratedbythe_____.[單選題]*AelectronicignitionsystemBcompressionofairbythepiston(正確答案)CfrictioninthefuelinjectorDfueloilbearingsystem35.Whatisthespeedofthecrankshaftinafour-stroke/cycleenginewhenthecamshaftisturningat750rpm?[單選題]*A375RPMB500RPMC750RPMD1500RPM(正確答案)36.Fuelinjectedintoadieselengine’scylinderisignitedby_____.[單選題]*Atheheatcompressedfuel/airmixtureinthecylinder(正確答案)BthefueligniterCthefuelinjectorDthefuelpump37.Thequantityofoilinjectedintothecylindercanberegulated_____.[單選題]*Abyturningthepumpplunger(正確答案)BbyvarythefuelvalvespringforceCbynomeansbycontrollingthegovernorDbyenlargingordiminishingtheinjectionhole38.Thehighpressurefuelopensthefuelvalveandissprayedintothecylinderintinydropletsknownas_____.[單選題]*AinjectionBpenetrationCatomization(正確答案)Dcompression39._____controlsthefueloiltemperatureinordertoprovideoilatthecorrectviscosityforcombustion.[單選題]*ATheviscosityregulator(正確答案)BThetemperaturecontrollerCTheflowmeterDThepressureswitch40.The_____intheinjectorwillliftatapre-setpressurewhichensuresthatthefuelwillatomizeonceitentersthecylinder.[單選題]*Aneedlevalve(正確答案)BnozzlesCpistonDspring41.Whatisthetermgiventotheprocessofbreakingupfueloilintoveryfineparticlesforbettercombustion?[單選題]*ASettlingBStrainingCSprayingDAtomizing(正確答案)42.Thecleanedheatedoil,afterpassingthroughthecentrifuges,istobepumpedtoa_____.[單選題]*AsettlingtankBservicetank(正確答案)CballasttankDdraintank43.Fromthedailyservicetankthefuelispumpedtoaheaterby_____.[單選題]*AthetransferpumpBthehighpressurepumpCthelowpressurefuelpump(or“boosterpump”(正確答案)Dtheseparator44.Thefueloiltransferpumpsaregenerally_____pumps.[單選題]*Apositivedisplacementrotary(正確答案)BcentrifugalCvaneDcentripetal45.Onmostmoderndieselengines,themainandconnectingrodbearingsreceivetheirlubricatingoilby_____.[單選題]*AbanjofeedBsplashfeedCgravityfeedDpressurefeed(正確答案)46.Generallythefunctionoflubricationistoformafilmoflubricantbetweenanytwosurfacesthathaverelative_____,sothatsurfacesdon’tgettouchwitheachother.[單選題]*AgravityBmotion(正確答案)CratioDdensity47.Friction,enginewear,andlubeoilconsumptioninadieselenginearedirectlyrelatedtothe_____.[單選題]*AacidityoftheoilBpourpointoftheoilCflashpointoftheoilDviscosityoftheoil(正確答案)48.Cylinderlubricationoilforlowspeedmainpropulsiondieselenginesisadmittedtoeachcylinderduring_____.[單選題]*AthepowerstrokeBthecompressionstroke(正確答案)ClowloadoperationonlyDperiodsofstandby49.Lubeoilfiltersremovecontaminantsfromoilmoreefficientlyiftheoilbeingfilteredis_____.[單選題]*Aheatedtoreduceviscosity(正確答案)BcooledtoincreaseviscosityCpumpedrapidlythroughthefilterDpumpedthroughthefilterunderhighpressure50.Largecrossheadtypeenginegenerallyhastwolubricationsystems,afunctionperformedonlybycrankcaseoilsystemis_____.[單選題]*AlubricatingBcooling(正確答案)CcleaningDneutralizing51.Crankchamberoilsmusthavegoodlubricatingpropertiesandbeabletoresistruptureofthefilmseparatingthemovingpartsinorderto_____.[單選題]*AensureminimumlubricationBensureminimumfrictionlosses(正確答案)CensurepropercoolingDkeeptouchwitheachother52.Whichofthefollowingmethodsisnormallyusedtolubricatebearingsinasmallhigh-speeddieselengine?[單選題]*ASplashlubricationBPressurelubrication(正確答案)CSightfeedlubricatorsDMechanicallubricators53.Constantcoolingthevariouscomponentsofdieselenginehasanumberoffunctionsexceptfor_____.[單選題]*AgoodlubricationBlowthermalstressCgoodmechanicalpropertiesDacidcorrosion(正確答案)54.Inacommonoilcoolercirculatedbyseawater,theoilisata_____pressurethantheseawater.[單選題]*Alarger(正確答案)BsafetyClowerDbursting55.Theoutletfromanexpansiontankofaclosedfreshwatercoolingsystemshouldbepipedtothe_____.[單選題]*AcylinderheadwateroutletheaderBcylinderjacketinletmainCheatexchangerinletconnectionDjacketwaterpumpsuctionline(正確答案)56.AdieselenginecoolingwatersystemwithapHfactorof3.0indicatesaconditionof_____.[單選題]*AslightacidityBslightalkalinityCexcessivealkalinityDexcessiveacidity(正確答案)57.Inacommonseawatercoolingsystem,fromtheseasuctiononeofapairofseawatercirculatingpumpsprovidesseawaterwhichcirculatesthelubricatingoilcooler,thejacketwatercoolerandthepistonwatercoolerbefore_____.[單選題]*AcoolingBheatingCsuckingDdischargingoverboard(正確答案)58.Alarge,low-speed,mainpropulsiondieselengineusesseawatertodirectlycoolthe_____.[單選題]*AcylinderheadsBexhaustvalvesCscavengingair(正確答案)Dinjectors59.Onoppositeendsofasingleshaftofaturboblowerareagasdriven_____andanaircompressor,whicharesealedeachother.[單選題]*AchargeairreceiverBscavengingairbeltCturbine(正確答案)Daircooler60.Intakeairflowfromadieselengineturbochargerisdirectlyproportionaltoengine_____.[單選題]*AexhaustgaspressureBexhaustgastemperatureCspeedDload(正確答案)61.Dieselenginemufflersaccomplishnoisereductionby_____.[單選題]*Areducingexhaustgasvelocity(正確答案)BincreasingthefrequencyofgasvibrationCtheuseoflongheadpipesDtheuseofzincelectrodes62.Comparedtoanaturallyaspirateddieselengine,asuperchargeddieselenginehas_____.[單選題]*Aacylinderairchargeofhigherpressure(正確答案)BincreasedpumpinglossesClessvalveoverlapDreducedblow-by63.Onecharacteristicofapulsetypeturbo-chargingsystemis_____.[單選題]*AhighaverageexhaustmanifoldpressureBgreatlyfluctuatinginletmanifoldpressureCconstantexhaustmanifoldpressureDmultipleexhaustpipestotheturbocharger(正確答案)64.Inanaturallyaspirateddieselengine,thevolumeofairintakeisdirectlyrelatedtoengine_____.[單選題]*AcompressionratioBvalvesize(正確答案)CfuelpressureDcylinderclearancevolume65.Eachcylinderhasonestartingvalvewhichisusuallyopenedbyairpressureandclosedby_____.[單選題]*AnutsandboltsBnewjointsCspringforce(正確答案)Dsealingrings66.Thestartingairsystemofanengineonboardusuallyhasinterlocksinorderto_____.[單選題]*AensureasuccessfulshuttingdownatemergencyconditionsBensureasuccessfulstartingatemergencyconditionsCpreventtheenginefromstartingatsomeabnormalconditions(正確答案)Dpreventtheenginefromstartingatemergencyconditions67.Vesselshavingmainenginesarrangedforairstartingaretobeprovidewithatleast_____.[單選題]*AoneautomaticdrainservingbothcontainersBtwoairstartingcontainersofapproximatelyequalsize(正確答案)ConecontrolaircontainerandonestartingaircontainerDoneadditionalmeansofstartingthemainengine68.Openingofthecylinder_____willadmitcompressedairintothecylinder.[單選題]*AsafetyvalveBindicatorcockCblow-downvalveDstartvalve(正確答案)69.Anelectricallydrivenautomaticallyoperatingauxiliaryblowerisprovidedforslowspeedand_____ofalowspeeddieselengine.[單選題]*Amanoeuvringoperations(正確答案)BbadcombustionCcoolingDmooringtrial70.Dieselengineexhaustgastemperaturescanbeusedtodetermineindividualcylinder_____.[單選題]*Aperformance(正確答案)BhorsepoweroutputCfuelconsumptionDscavengeeffect71.Ifthespeedofaturbochargeddieselengineismaintainedconstantastheloadontheengineisincreased,thespeedoftheturbochargerwill_____.[單選題]*AdecreaseuntiltheenginespeedincreasesBincrease(正確答案)CdecreaseDremainunchanged72.Ifthemaximumcylinderpressuresareoutofbalancetheyshouldbeadjustedby_____.[單選題]*AchangingthefuelBadjustingtheinjectorCcleaningtheairfilterDre-timingthefuelpumps(正確答案)73.Thepurposeofanoilmistdetectorinamainpropulsiondieselengineistowarnof_____.[單選題]*Aexcessivemistdensityinthecrankcases(正確答案)BexcessivelyhighcrankcasevacuumCexcessivelyhighbearingtemperatureDexcessivecarbonbuildupinthelubeoil74._____deviceisprovidedtopreventstartingairfrombeingadmittedtothecylinderbeforethereversingiscompleted.[單選題]*AAnautomaticBAtransmissionCAself-regulatingDAninterlocking(正確答案)75.Electricallyoperatedsafetydevicesonauxiliarydieselenginesfunctiontostoptheengineby_____.[單選題]*AincreasingthevolumeofintakeairBshuttingoffthefuelsupply(正確答案)CincreasingtheenginebackpressureDover-speedingtheengine76.Aircocks,usuallypositionedatthe_____inacirculatingsystem,isusedtogetridoftheairinthesystem.[單選題]*AbendingjointBexpansiontankCweldDthehighestpoint(正確答案)77.Adieselengineusinglubeoilwithtoohighaviscositywillexhibit_____.[單選題]*Aincreasedstartingdifficultyincoldweather(正確答案)BincreasedoilconsumptionCthickeningathigheroperatingtemperaturesDminimalfrictionlosses78.Foracontinuousoperationdieselengine,aduplexfilterunitwouldbethebestarrangementbecause_____.[單選題]*Achangingfilterelementswouldnotinterruptengineoperation(正確答案)BfilteringoccurstwiceineachpassofoilthroughthesystemCcloggingwillnotoccurDdroppingpressureishalfofthatthroughasinglefilterunit79.Apracticalwayofcheckingforexcessivefuelinjectioninonecylinderofanoperatingdieselengineisto_____.[單選題]*AfeelthehighpressurefuellineBcheckthecylinderexhaustsforwhitesmokefrequentlyCcheckthecylinderexhausttemperature(正確答案)Disolateeachcylinderandinspecttheinjector80.Fueloilhavingalowcetaneratingcouldresultin_____.[單選題]*AimprovedcoldweatherstartingBexcessivefueloilconsumption(正確答案)CreducedignitionlagDsmootherengineoperation81.Acontrollablepitchpropelleronadieseldrivenvesseleliminatestheneedfor_____.[單選題]*AfrictionclutchesBdisconnectclutchesCreversinggears(正確答案)Dreductiongears82.With_____,theengineneednottobealignedwithreductiongearsorpropellershaft.[單選題]*AdieselenginepropulsionBdieselelectricpropulsion(正確答案)CsteamenginepropulsionDgasturbinepropulsion163.Inmotorship,_____isoftenusedtorecoversomeoftheheatcarriedintheexhaustgasesfromthemainengine.[單選題]*AandieseloilheaterBawasteheatboiler(正確答案)CafreshwatergeneratorDAlloftheotherChoices164.Marineboilersareusedforproducingsteamwhichmaybeusedforthefollowingexcept_____.[單選題]*AdrivingauxiliarymachineryBdrivingthemainenginesCheatingheavyoilDproducingdrinkingwater(正確答案)165.Theliftingpressureof_____issetinthepresenceofasurveyor,itislockedandcannotbechanged.[單選題]*AfuelvalvesofmainengineBinjectorpumpofmainengineCsafetyvalvesofmarineboiler(正確答案)Dsafetyvalvesofareciprocatingpump166.Thefunctionofasafetyvalveonamarineboileristopreventthepressureintheboilerfromrisingabove_____.[單選題]*AdesigntestpressureBmaximumallowableworkingpressure(正確答案)CthepressureusedintheaccumulationtestDthehydrostatictestpressure167.Inaverticalmarineboiler,_____isfittedinthecombustionchamber,onthefloorandsidesofthefurnace.[單選題]*AuptakeBsmoketubeCrefractorymaterial(正確答案)Daccessdoor168.Afire-tubeboilerincludesthefollowingcomponentsexcept_____.[單選題]*AuptakesBdowncomers(正確答案)CsmokeboxesDfurnaces169.Afailureofanycomponentofaflamesafeguardcontrolforanauxiliaryboilerwillresultin_____.[單選題]*AafurnaceexplosionBautomaticburnershutdown(正確答案)CuncontrolledfiringDautomaticrestart170.Impuritiesfromtheboilerwatersurfacecanberemovedthroughthe_____.[單選題]*AsafetyvalveBblowdownvalveCscumvalve(正確答案)Dfeedcheckvalve171.Oneofthepurposesofchemicallytreatingboilerwateristo_____.[單選題]*AReduceblowdownfrequencyBreducescaleformation(正確答案)CeliminatewatersidecleaningDconstantlydecreasealkalinity172.Whichofthefollowingconditionswouldcause“panting”inasteamingauxiliaryboiler?[單選題]*ALowwaterlevel.BFaultyflamescanner.CFlamefailure.DInsufficientcombustionair.(正確答案)173.Whitesmokefromaboilermayindicate_____.[單選題]*Aafracturedtube(正確答案)BlowfueloiltemperatureClowfueloilpressureDinsufficientcombustionair174.Amono-pumpisasingle-screwpump.Thatmeansitconsistsof_____rotor(s).[單選題]*Aone(正確答案)BtwoCthreeDfour175.Thedischargeflowofareciprocatingpumpis_____.[單選題]*AsteadyBinpulsation(正確答案)CcontinuousDlarge176.WhichofthelistedpumpsisNOTapositivedisplacementpump?[單選題]*ACentrifugal(正確答案)BReciprocatingCGearDRotary177.Thepumpsemployedonboardshipcanbedividedintotwomaincategories,i.e._____pumpsandcentrifugalpumps.[單選題]*AgearBnon-positivedisplacementCpositivedisplacement(正確答案)Drotary178.____isnottheadvantageofself-primingreciprocatingpump.[單選題]*ASimplestructure(正確答案)BProducingrequireddischargepressureCDealingwithalargeamountofvaporDMakingaseal179.Tooperateacentrifugalfirepumpatreducedcapacity,youshould_____.[單選題]*AreadjustthereliefvalveBthrottlethesuctionlineCthrottlethedischargevalve(正確答案)Dopentheprimingline180.Ifyouwereoperatingacentrifugalwaterservicepumpwithwornwearingrings,the_____.[單選題]*ApumpwouldbeverynoisyBpumpwouldvibrateexcessivelyCpumpwoulddevelopinsufficientflow(正確答案)Dstuffingboxwouldleakexcessively181.Over-greasingofballbearingsinstalledonpumpswillresultin_____.[單選題]*AsmootherpumpoperationBoverheatingofthebearing(正確答案)CreducedcorrosioninthebearingDincreasedpumpcapacity182.WhichofthefollowingmodesofheattransferdoesNOTrequireanyphysicalcontactbetweenawarmerandacoolersubstance?[單選題]*ARadiation(正確答案)BConductionCNaturalconvectionDContactdirectly183.Refrigerantenteringthecompressorofarefrigerationsystemshouldbeinwhichofthefollowingconditions?[單選題]*ASub-cooledliquidBSub-cooledvaporCSuperheatedvapor(正確答案)DLiquid184.Thetemperatureofarefrigerantgasisthehighest_____.[單選題]*Aatthecompressordischarge(正確答案)BatthecompressorsuctionCintheexpansionvalveDinthereceiver185.Thelatentheatofevaporationisdissipatedinthe_____inacompressionrefrigerationsystem.[單選題]*AevaporatorBcondenser(正確答案)CexpansionvalveDcompressor186.Thecompressorsuctionlineconveystherefrigerantvaporfrom_____to_____.[單選題]*Acondenser/evaporatorBevaporator/compressor(正確答案)Ccompressor/condenserDNoneoftheotherChoices187.Sub-coolingincreasesthe_____oftherefrigerationcycle.[單選題]*AcapacityBrefrigerationeffect(正確答案)CmassflowrateDvolumeflowrate188.Thedevice,whichisinstalledinthecompressorsuctionlinetopreventliquidfromenteringthecompressorwhenhotgasdefrosting,iscalleda_____.[單選題]*Are-vaporator(正確答案)BdehydratorCreceiverDsolenoid189._____maybedefinedastheprocessofaddingheattoanenclosedspacetomaintainitstemperatureaboveambient.[單選題]*AHeating(正確答案)BVentilationCDehumidifyDRefrigeration190._____isthecirculationandrefreshingoftheairinaspacewithoutnecessarilyachangeoftemperature.[單選題]*ARefrigerationBAirconditioningCVentilation(正確答案)DHeating191.Whenaircoolingisinuseitisgoodpracticetokeepallportholes,windowsanddoors_____.[單選題]*Ashut(正確答案)BfullyopenCopenDsemi-opened192.Thequantityofcooledairdeliveredbyanairconditioningunitshould_____thesumofthequantityofairre-circulatedtotheunitandthequantitymechanicallyexhausted.[單選題]*AbehigherthanBbelowerthanCbeequalto(正確答案)Dexceed193.Theprincipleofseparationbywhichallcommerciallyavailableoilywaterseparatorsfunctionis_____differentialbetweenoilandwater.[單選題]*AthetemperatureBtheviscosityCthegravity(正確答案)Dthesize194.Oilywaterseparatorsareusedtoensurethatshipsdon’tdischargeoilwhenpumpingout_____.[單選題]*AballastwaterBboilerwaterCbilgewater(正確答案)Dsewagewater195.Inanoilywaterseparatortheoilwilltravel_____totheoilcollectingspaces.[單選題]*Aupwards(正確答案)BdownwardsCoutwardsDforwards196.Accordingtooneoftheannexesof_____,waterthathastobedischargedshouldcontainlessthan15ppmofoil.[單選題]*AISPSBSTCWCILODMARPOL(正確答案)197.Becausetheflowrateofsupplywaterpumpistoolarge,oilywaterseparatordoesnotworkwell.Whichofthefollowingisnotthereason?[單選題]*Athemonitoringequipmentisoutoforder(正確答案)BseparatingeffectbecomesbadCinnerwalliscontaminatedDseparatingeffectbecomesbadandinnerwalliscontaminated198.Theoilsludgeisburntinthe_____onboard.I’llshowyoutheashes.[單選題]*AboilerBmainengineCauxiliaryengineDincinerator(正確答案)199.Whenanincineratorgoesoutsuddenly,the_____supplyshouldbeshutoffquickly.[單選題]*AairBfuelCsludgeDfuelandsludge(正確答案)200.Disinfectorusedinthesewagebiologicaltreatmentplantusuallyis_____.[單選題]*AchlorinewaterBozoneChypo-calciumchloride(正確答案)Dcalciumoxide201.Biologicalsewagewatertreatmentplantworksonthe_____.[單選題]*AheatingprocessBsettlingprocessCaerationprocess(正確答案)Dcentrifugingprocess202.Thehighoildensitywillpositiontheinterface_____thanwillalowdensity.[單選題]*AfartherawaythewateroutletBfartherawaythebowlperipheryCclosertothebowlperiphery(正確答案)Dclosertothebowlcenter203.Forapurifier,changingtoagravitydiscwithlargerholediameterwillmovetheinterfacetowardsthe_____.[單選題]*Abowlperiphery(正確答案)BbowlcenterCuppersurfaceDlowersurface204.Whenseparatinglubeoilinoilseparator,theoptimalseparatingquantityis_____oftheratedquantityonnameplate.[單選題]*A100%B1月2日C1月5日D1月3日(正確答案)205.Theunitsmustincorporateanaudio-visualalarmsystemwhichcomeintooperationwhenanyrunningconditionis_____.[單選題]*AchangedBingoodCoutoforder(正確答案)Dundercontrol206.Ifdieselfuelwasdischargingfromthewastewateroutletofadisktypecentrifugalpurifieroperatingasaseparatoryoushouldtryto_____firstly.[單選題]*Are-primethepurifier(正確答案)BremovethedischargeringCslowthepurifiertoitsproperspeedDputinanadditionaldischargering207.Ifthebowlspeedoftheoilpurifierisalwayslowerthantheratedspeed,whichcauseisincorrect?[單選題]*AThemotorisoutoforder.BThebrakeisn’treleased.CThefrictionpadsareslippery.DThethroughputistoohigh.(正確答案)208._____cancauseoilflowfromwateroutletofaseparator.[單選題]*AOilinletvalveopeningtooquickly(正確答案)BOiltemperaturelittlehigherthannormalCDiameterofgravitydisctoosmallDViscosityofoillittlelowerthannormal209._____istheproductionofpurewaterfromseawaterbyevaporationandre-condensing.[單選題]*AEvaporationBCirculationCCondensationDDistillation(正確答案)210._____areusedtolimitthepressureinanyparticularportionandmainlycontrolthepressureafterthevalve.[單選題]*AReliefvalvesBCheckvalvesCSafetyvalvesDReducingvalve(正確答案)211.Tocloseabutterflyvalve,itisonlynecessarytoturnthehandle_____.[單選題]*AOnethirdofaturnBHalfofaturnCAquarterofaturn(正確答案)DAturn212.Amongthebasiccategoriesofequipment,whichofthefollowingareusedtoconvertmechanicalintohydraulicenergy?[單選題]*AThehydraulicpumps(正確答案)BValvesCHydrauliccylindersDHydraulicmotors213.Inageneralcargocrane,_____isfittedtoliftthecargoload.[單選題]*AtheslewingmotorBtheluffingmotorCthehoistingmotor(正確答案)DNoneoftheotherChoices214._____areusedforcargohandling.[單選題]*ACranes(正確答案)BMooringwinchesCWindlassesDForeman215._____isnotacomponentofawindlass.[單選題]*AAcablelifterBAsootblower(正確答案)CAmooringdrumDAwarpend216.Oncetheanchorisheavedupandfirmlyseated,_____isusedtolockthechaininplace.[單選題]*AwindlassBachainstopper(正確答案)CahydraulicmotorDcapstan217.Therequiredrudderangleistransmitted_____fromthesteeringwheelatthebridgetothetelemotoratthesteeringgear.[單選題]*AmanuallyBbycompressedairCbyfueloilDhydraulicallyorelectrically(正確答案)218.Whichofthefollowingcanbeusedintransmissionsystemusually?[單選題]*AHydraulicoil(正確答案)BAnimaloilCLightoilDFueloil280.Anelectr