1.Thecylindercoversaresecuredbyeightelasticholding-down________arrangedinfourpairs.A.nutsB.screwsC.studsD.flanges2.Thereisasupportringbetweenthecylinderblockandthecollarofthecylinderliner,thuscarryingboththelinerandthecylindercover.Italsopasses_________tothecoolingboresandtothecoverA.coolingwaterB.coolingoilC.refrigerant D.lubricateoil3.AclearlyvisiblebenefitofRT-flexenginesistheir_________operationatallshipspeeds.Thisisachievedbythesuperiorcombustionperformance.A.shocklessB.smokelessC.novibrationD.noiseless4.ThekeyfeatureoftheSulzerRT-flexsystemisthatitgivescompletefreedominthe_____andoperationoffuelinjectionandexhaustvalveactuation.A.metering B.controlC.usingD.timing5.Thedevelopmentgoalsforalargemarineenginearemany,ofteninteractandinsomecaseseven______witheachotherA.conflictB.accordC.harmonizeD.struggle6.Thepistoncrownemploystheusualjet-shaker__________principlewithanarrangementofcoolingboresinthecrownsothatthesurfacetemperaturesofthecrownaremoderatewithaveryevendistribution.A.watercoolingB.oilcoolingC.aircoolingD.combinedcooling7.Thescavengeairreceiverisofasimplifiedandmodulardesignwithintegralnon-returnflaps,hangingcooler________andtwoauxiliaryairblowers.A. dozens B.parcels C.BundlesD.Gallons8.Forauxiliaryenginesthepermissibleoverloadis______foronehoureverytwelvehours.A.10%B.15%c.20%D.25%9．Toppistonringsareplasmacoated.Itgivesaddedsafetyforthe______ofnewliners.A.running-inB.running-outC.running_onD.running_down10.Aroundthecombustionchamber,allthemaincomponentsare____togivelowthermalstrainsandthesmallest,circumferentially-symmetricdeformationsforgoodsealingbetweenpistonringsandliner.A.drillcooled B.holecooled C.tubecooled D.borecooled11.Aroundthecombustionchamber,allthemaincomponentsareborecooledtogivelow_____strainsandthesmallest,circumferentially-symmetricdeformationsforgoodsealingbetweenpistonringsandliner.A.thermalB.mechanicalC.plasticD.elastic12.Thetoppistonringisplasmacoatedtogivethelowestwearratetoreachthegoaloftwo-years’_______withsufficientmargin.A.TBOB.CEOC.CFOD.MCR13.Greatcareisdedicatedtotheremovalof_____fromthescavengeair.A.gravity B.viscosity C.density D.humidity14.Theheavy-dutylubricatingoilwithchemical_______hasbeenwidelyintroducedinrecentyears.A.additivesB.behaviorC.coolant D.desiccant15.________onboardshipareusedtocontrolanddistributetheelectricalenergygeneratedbygenerators.A.Governors B.Alternators C.Blackboards D.Switchboards16.Theseacidresiduesmustbepreventedfromenteringthecrankcase,otherwisethelubeoilwouldbe_______.A.contaminatedB.emulsifiedC.deterioratedD.oxidated17.Mainenginesaswellasauxiliaryenginesoperatingonheavyfuelshouldhavecontinuous________onthelubricatingoil,eitheraccordingtothebypassorbatchprinciples.A.filteringB.centrifugingC.depositingD.operating18.Inengineswith_____system,thelubricatingoilcanbeaddedtotheenginethroughthefillingholeinthecrankcasecover,byusingahandoilcan,orthroughtheseparatorpipeA.lubricatingoilB.drysumpC.circulatedtankD.wetsump19.Governorsareequippedwith______motorsforsynchronizing,loadsharingandfrequencycontrol.A.speedsettingB.loadsettingC.speedchangingD.loadsetting20.Engines,whicharetoberuninparallelhavegovernorsspeciallyadaptedforthesame_______,about4%toobtainbasicloadsharing.A.speedsettingsB.speeddroopsC.speeddropsD.speedchanges21.Theairrequiredforcombustionistakenfromtheengineroomthroughafilterfittedontheturbocharger.Thisreducestheriskfortoo____andcontaminationofthecombustionair.A.hightemperaturesB.lowtemperaturesC.wetD.dirty22.Theoilsump,alightweldeddesign,ismountedontheengineblockfrombelowandsealedby________.A.O-ringB.gasketC.washerD.packing船舶受損嚴重。Thevesselseriouslydamaged機艙中水位正在上漲。Waterlevelinengineroomisincreasing.一套安全閥送車間拆卸，檢查，研磨。Onesetofsafetyvalvetobesenttoworkshopfordismantlinginspectionandgrinding.蒸發(fā)管海水側(cè)化學(xué)清潔，壓力試驗0.7MPa。Theseawatersideofevaporatorpipestobecleanedwithchemicalandpressuretestupto0.7MPatobecarried.12:30斷電，原因不明。12：30Blackoutoccurredwithunknownreason發(fā)現(xiàn)排煙溫度過高。Exh.Temp.foundtoohigh.港口國檢查官檢查了油水分離器。PSCOinspectedtheoil/waterseparator我們將補充300噸燃料油。Wewillreplenish300tonsoffueloil.關(guān)聯(lián)題：TheSulzermulti-levelaccumulatorsystemforcylinderlubricationhasprovedparticularlybeneficialtogoodpiston-runningbehaviour.Thecylinderoilisfedtothelinersufaceattwolevelsofquills.Thislubricatingoilandisthereforeconsideredtobeefficientandeconomical.Thelubricationoilpumpsaredrivenbyafrequency-controlledelectricmotorandtheoilisdistributedtothequillaccumulatorsbyoildistributors.Withthissolution,muchlesspipingisrequired.Thecylinderoilfeedrateiscontrolledaccordingtotheengineload.Adjustmentsdependingontheengineconditionandforrunning-incanbeeasilymadebyusingsoftwareintheenginecontrolsystem.Whatisthemainideaofthispassage?ThelubricationsystemofmainengineHowtocontrolthelubricationThecylinderlubricationofmainengineHowtomakerunning-ineasierHowmanytiersofcylinderoilquillsA.one B.two C.three D.four3.Howisthecylinderoilfeedratecontrolled?A.accordingtotheenginespeedB.accordingtotheengineloadC.accordingtoboththeenginespeedandloadD.notmentionedinthisparagraph4.Howarethelubricationoilpumpsdriven?A.bycamshaft B.byhydraulicmotor C.bypneumaticmotor D.byelectricmotor2.TheclearlyvisiblebenefitofRT-flexenginesistheirsmokelessoperationatallshipspeeds.Thisisachievedbythesuperiorcombustionperformancewiththecommon-railfuelinjection.Thissystemmaintainsthefuelinjectionpressureattheoptimumlevelrightacrosstheenginespeedrange,ensuringoptimumcombustionunderalloperatingconditions.Inaddition,aselectiveshut-offofsingleinjectorsatverylowspeedsandanoptimizedexhaustvalvetiminghelptokeepsmokeemissionsbelowthevisiblelimit.SulzerRT-flexenginesalsohavetheadvantageofsteadyrunningatlowerspeedsthanengineswithmechanically-controlledinjection.Theycanrunverysteadily,andwithoutsmoking,at10-12%ofnominalspeed,whichfortheRT-flex60Cisabout10-14rpm.Thisismadepossiblebytheprecisecontrolofinjection,togetherwiththehigherinjectionpressuresachievedatlowspeed,andthesequentialshut-offinjectors.Accordingtothefirstparagraph,theadvantageofcommon-railinjectionis:A.smokelessoperation B.shocklessoperationC.noiselessoperation D.novibrationoperationAccordingtoabovemassage,RT-flexenginecanoptimize:A.fuelinjectionpressure B.combustionC.exhaustvalvetiming D.allabovewhentheRT-flexengineworkingonverylowspeed,theinjectorswillstopworkingB.someinjectorswillbeclosedallthetimeC.theinjectorswillworkonebyoneD.theinjectorswillbeliftedsequentiallyTheRT-flexenginecanrunatverylowspeed,thisismadepossiblebyfollowingthingsexcept__________.theprecisecontrolofinjectionthehigherinjectionpressurestheoptimizedexhaustvalvetimingthesequentialshut-offinjectors3.Thefuelinjectionequipmentandsystempipingarelocatedinahot-box,providingmaximumreliabilityandsafetywhenusingpreheatedheavyfuels.Thefueloilfeedpipesaremounteddirectlytotheinjectionpumps,usingaspeciallydesignedconnectingpiece.Thereturnpipeisintegratedinthetappethousing.Thereisonefuelinjectionpumppercylinderwithshieldedhighpressurepipetotheinjector.Theinjectionpumps,whichareoftheflow-throughtype,ensuregoodperformancewithalltypesoffuel.Thepumpsarecompletelysealedofffromthecamshaftcompartment.Thefuelinjectionisstoppedbysettingthefuelracktozeroposition.Foremergenciesthefuelrackofeachinjectionpumpisfittedwithastopcylinder.Theblockingdevicecanbeoperatedbyoperator.Thefuelpumpandpumpbracketareadjustedinmanufacturingtotighttolerances.Thismeans