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ID:8349217
大小:831.00 KB
页数:72页
时间:2018-03-21
《甲类三管英语考试试题》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、1、Inthetwostrokedieselengine,itisdesignedsothattheoilimpingementistimedtoproceedonlyonthepistonringbeltduring________.A.compressionstrokeB.suctionstrokeC.expansionstrokeD.exhauststroke2、Inafourstrokeengine,whichprocesslaststhelongestperiod?A.exhaustandsucti
2、onprocessB.suctionandcompressionprocessC.combustionandexhaustprocessD.workingandexhaustprocess3、Onwhatdoyoudependhavingtheaircoolerofmainenginechemicallywashed?A.increasedairpressuredifferencebeforeandaftaircoolerB.reducedexhausttemperatureinallcylindersC.r
3、educedtemperaturedifferencebetweenwaterinletandoutletD.bothAandC4、Whenoccurringafireinthescavengeairbox,thefollowingmeasuresshouldbetakenexceptfor________.A.reducingspeedtoSLOWandaskingbridgeforpermissiontostopB.stoppingthefueloilsupplyC.switching-ontheauxi
4、liaryblowersD.puttingthescavengeairboxfireextinguishingequipmentintofunction5、Continuoussurgingofturbochargercanbecausedby________.①crashstopofengine;②increasedbackpressureafterT.Ch.;③fouledordamagedturbinenozzlering.A.allarecorrectB.②and③arecorrectC.noneof
5、theaboveiscorrectD.①onlyiscorrect6、Whenasuddenincreaseinsteamdemandoccursfromtheboiler,thewaterlevelinthedrumatthehigherpressurewill_______.A.risequicklyB.riseslowlyC.dropquicklyD.dropslowly7、Onmodernships,centrifugalpumpwithaself-primerhasreplacedreciproca
6、tingpumpasbilgepumpbecause________.A.centrifugalpumpischeaperthanreciprocatingpumpB.thesizeofcentrifugalpumpwithsamecapacityissmallerthanthatofreciprocatingpumpC.centrifugalpumpmakesmaintenanceeasierthanreciprocatingpumpdoseD.alloftheabove8、Whichcauseoffoll
7、owingwillnotleadtorefrigerationplantshort-cycle?A.lackofrefrigerantB.refrigerantwithmuchwaterC.setdefectivelylowpressurerelayD.nocoolingwater9、Toreceiveoilresiduesfromthepurificationoffuelandlubricatingoilsinthemachineryspaces,whatkindoftank(s)shouldbeprovi
8、dedonboard?A.bilgetankB.sludgetankC.overflowtankD.oilcollectingtank10、Theoildischargemonitoringsystemintheoiltankervesselsisusedfordetectingtheamountofoildischargedoverboardtoensurethatitdoesnotexceed_
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