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1、中華人民共和國(guó)海事局2009年第5期海船船員適任統(tǒng)考試題(總第48期)科目:輪機(jī)英語(yǔ)試卷代號(hào):805適用對(duì)象:無(wú)限近洋航區(qū)3000kw及以上船舶二三管輪(本試卷卷面總分100分,及格分為70分,考試時(shí)間100分鐘)答題說(shuō)明:請(qǐng)選擇一個(gè)最合適的答案,并將該答案按答題卡要求。在其相應(yīng)位置上用2B鉛筆涂黑。第1題至88題,每題1分,第89題至96題,每題1.5分。一、單項(xiàng)選擇題1.Dieselenginesclassifiedasrecipr
2、ocatinginternalcombustionenginesbecausethey____A.useenergyfromfuelburnedoutsidetheircylindersB.burnfuelinacombustionchamberthatmovesbackfthC.burnfuelinachamberwhereitsenergymovesapistonupdownD.acontinuouscombustionproces
3、stoimpartrotarymotiontothepistons2.Theabbreviation“MIP”stsf_____A.dleindicationpressureB.meanindicatedpressureC.meanindicatedpitchD.dleindicatedpower3.Thetermusedtoexpresstheignitionqualityofaparticularfuelis_____A.cetan
4、enumberB.octanenumberC.ignitionindexnumberD.volatilitypoint4.Theperiodwhenbothinletvalvesexhaustvalvesareopenisreferredtoas____A.valveloopB.valveuniflowC.valveoverlapD.valvegrinding5.Whichofthefollowingstatementsrepresen
5、tsthefunctionofthecompressionringsinstalledatthetopofadieselenginepistonA.ControltheamountoflubeoilburnedinthecombustionchamberB.TransmitheatfromthepistontothecylinderlinerC.Preventdamagetoringgroovesbyactionasaheatdam.D
6、.Dissipatecombustionchambergaspressurebychannelingitthroughtheringgap.6.Thegasloadsontheenginestructureareconstrainedbymeansofhydraulicallypreloaded_____Whichconnectthebedplateframesectionscylinderjacketsintoasingleunit.
7、A.connectingrodsB.meanbearingC.columnD.therods7.______ofdifferentthicknessareedbetweentheshellstoenableadjustmentofthebearingclearness.A.ScrewsB.FilmsC.DisesD.Shims8.Comparedtofourstrokecycleenginestwostrokecycledieselen
8、gineshavethedisadvantagesof____A.lesseventqueB.highercylinderheadtemperaturesC.fewerpowerstrokeperrevolutionD.greaterweightsizerequirements9.Duringthefuelimectionperiodfuelpressuremustexceedcylindergaspressureto_____A.en
9、sureperationdistributionofthefuelinthecombustionchamberB.ensuretheneedlevalveisflushedcleanduringeachinjectionC.preventcombustiongasblowbackintotheopenneedlevalveD.preventreflectedpressurewaveswhentheneedlevalvecloses10.
10、Theupperpistonringsinlargeslowspeedtwostrokecycledieselenginesaremosteffectivelylubricatedbyoil____A.fedfrommechanicallubricatsB.thrownofffromthemainbearingsC.suppliedfmwickfeddriplubricatsD.flowfromacentrifugalbanjooile
11、r11.Inadieselengineclosedfreshwatercoolingsystemtheamountofcoolantflowingthroughtheheatexchangeiscontrolledbythe_____A.sectionpressureregulatB.thermostaticbypassvalveC.seawatertemperatureD.waterlevelintheexpansiontank12.
12、Thepurposeofanaftercooleristo______A.reducetheturbogeroperationtemperaturethecauseisprobably_____A.excessivepumpspeedB.excessivesuctionheadC.wnwearingringsD.grosspumpmisalignment30.Propertiesofagoodrefrigerationoilinclud
13、e_______A.lowwaxcontentB.highpourpointC.highviscosityD.lowwaxcontenthighpourpointhighviscosity31.The_____onlyallowsfadjustmentoftemperatureineachroombytheoccupantmanuallycontrollingtheairvolumeadmitted.A.centralaircondit
14、ioningsystemB.highvelocitysystemC.lowvelocitysystemD.singleductsystem32.Theprocessofaddingmoisturetoairtoincreasetherelativehuityisknownas______A.sublimationBdesiccationC.huificationD.miniaturization33.Sludgymayfminthecr
15、ankcaseofanairconditioningcompressasaresultof_____A.bubblingrefrigerantB.overheatingoxidationC.loweredoperatingtemperaturesD.reducingthecloudflocpoint34.Whichoftheequipmentlistedismosteffectiveinprocessingbilgeslopsfover
16、boarddisgeA.a100PPMoilywaterseparatB.assemblingthelubeoilpurifierasaseparataligningittothebilgeoverboardC.a15PPMoilywaterseparatD.amagicduplexstrainer35.Whenstartedacompleteoilywaterseparatingunitisfirstfilled_____.Theoi
17、lywatermixtureisthenpumpedthroughtheinletpipeintothecoarseseparatingcompartment.A.withdirtywaterB.withcleanwaterC.byoilywaterD.bymixedwater36.WhichisthepollutionpreventionequipmentA.boosterpumpB.evapatC.incineratD.cooler
18、37.Concerningtheincinerat’soperationwhichofthefollowingisnotcrectA.scavengingtimeshouldbemethan30secondsbefeignitingB.theoiltemperatureofwasteoiltankis80100℃C.firstignitingtheincineratwithdieseloilwhenthetemperatureofhea
19、rthisabout600℃thewasteoilisdrawnin.D.theashfromincineratcanbedumpedintoseanodistancelimitation38.Bacteriawhichlive____aresaidtobeaerobicA.inthepresenceofoxygenB.withoutoxygenC.inthepresenceofnutritionD.withoutnutrition39
20、.Fapurifierchangingtoagravitydiscwithsmallerholediameterwillmovetheinterfacetowardsthe______A.bowlperipheryB.bowlcenterC.uppersurfaceD.lowersurface40.Toensurelubeoilpurifierwkinginnmalconditiontheintervalbetweentwosludgy
21、disgingshouldnotexceed____hours.A.2B.4C.5D.641.WhichofthefollowingproblemswilloccurifadisktypecentrifugallubeoilpurifierisnotproperlyprimedpritoadmittingoilflowtothebowlA.Contaminationofthelubeoilbyemulsificationwillresu
22、ltB.ThelubeoilwillnotbesubjectedtothepropercentrifugalfceC.ThelubeoilwilloverheatflashD.Oilwilldisgefromtheheavyphasedisgeptbewasted42.Avacuumisinitiallycreatedinaflashtypedistillingplantby_____A.theflashingofthefeedwate
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