轮机英语题库补充以及答案

《轮机英语题库补充以及答案》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、题库补充以及答案1.Inthetwostrokedieselengine,itisdesignedsothattheoilimpingementistimedtoproceedonlyonthepistonringbeltduring.A.compressionstrokeB.suctionstrokeC.expansionstrokeD.exhauststroke2.Inafourstrokeengine,whichprocesslaststhelongestperiod?A.exhaustandsuctionprocessB.suctionandcompressionproce

2、ssC.combustionandexhaustprocessD.workingandexhaustprocess3.Onwhatdoyoudependhavingtheaircoolerofmainenginechemicallywashed?A.increasedairpressuredifferencebeforeandaftaircoolerB.reducedexhausttemperatureinallcylindersC.reducedtemperaturedifferencebetweenwaterinletandoutletD.bothAandC4.Whenoccu

3、rringafire3inthescavengeairbox.thefollowingmeasuresshouldbetakenexceptfor.A.reducingspeedtoSLOWandaskingbridgeforpermissiontostopB.stoppingthefueloilsupplyC.switching-ontheauxiliaryblowersD.puttingthescavengeairboxfireextinguishingintofunction5.Continuoussurgingofturbochargercanbecausedby_____

4、___①crashstopofengine②increasedbackpressureafter③fouledordamagedturbinenozzleringA.allarecorrectB.②and③arecorrectC.noneoftheaboveiscorrectD.①onlyiscorrect6.Whenasuddenincreaseinsteamdemandoccursfromtheboiler,thewaterlevelinthedrumatthehigherpressurewill.A.risequicklyB.riseslowlyC.dropquicklyD.

5、dropslowly7.Onmodernships,centrifugalpumpwithaself-primerhasreplacedreciprocatingpumpasbilgepumpbecauseA.centrifugalpumpischeaperthanreciprocatingpumpB.thesizeofcentrifugalpumpwithsamecapacityissmallerthanofreciprocatingpumpC.centrifugalpumpmakesmaintenanceeasierthanreciprocatingpumpdoseD.allo

6、ftheabove8.Whichcauseoffollowingwillnotleadtorefrigerationplantshort-cycle?A.lackofrefrigerantB.refrigerantwithmuchwaterC.setdefectivelylowpressurerelayD.nocoolingwater9.Toreceiveoilresiduesfromthepurificationoffuelandlubricatingoilsinthemachineryspaces,whatkindoftank(s)shouldbeprovidedonboard

7、A.bilgetankB.sludgetankC.overflowtankD.oilcollectingtank10.TheoildischargemonitoringsysteminthetankervesselsisusedfordetectingtheamountofoildischargedoverboardtoensurethatitdoesnotexceedA.15liters/nauticalmileB.30liters/nauticalmileC.60