船舶柴油机的工作原理和基本结构.doc

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1、中华人民共和国海船船员适任考试·同步辅导教材轮机英语自学题库1.2.2船舶柴油机的工作原理和基本结构1.Adieselengineissimilartoagasolineengineexceptthattheformerhasno______.A.pistonB.connectingrodC.cylinderD.sparkplug注柴油机与汽油机相似除了柴油机没有火花塞。D2.Fueloilbeginstoinjectintothecylinderofafour-strokedieselengineduringthe_____.A.intakestrokeB.exhaust

2、strokeC.powerstrokeD.compressionstroke注燃油开始喷射进入柴油机气缸是在压缩冲程末。D3.Oilforpistoncoolingisdeliveredthroughrodtoacompartmentinthepistonheat,thendistributedasaresultofpistonmotion,andfinallydrainedtothecrankcasethroughoneormoreholesorpipes;thisprocedureisknownasthe_____.A.splashmethodB.spraymethod

3、C.shakermethodD.throw-offmethod注活塞冷却油通过活塞杆进入一个空间，由于活塞的往复运动，将通过一些小孔管加热，分配最后排放冷却油到曲轴箱，这个过程被称为震荡冷却。C4.Successfulcombustioninsidethecylindersofadieselenginedependupon______.A.fineatomizationB.hightemperatureC.goodmixingoffuelandairD.anyoneoftheotheralternatives第133页共133页中华人民共和国海船船员适任考试·同步辅导教材轮

4、机英语自学题库注柴油机气缸内完全燃烧取决于良好雾化，高温，以及燃油空气的良好混合。D5.Thefunctionofdieselenginevalvespringsisto______.A.holdthevalvesopenB.keepthevalvesofftheirseatsuntiltheexhauststrokeiscompletedC.closethevalvesD.openinletvalveswhentheairinjectioncyclebegins注柴油机阀件弹簧的作用是关闭阀。C6.Castironpistonsusedinlargepropulsiond

5、ieselenginesareconstructedwith_____.A.notaperB.theskirtbeingtaperedandsmallerthanthecrownC.theskirtbeingtaperedandlargerthanthecrownD.thecrownbeingtaperedandsmallerthantheskirt注使用在大型推进装置的铸铁活塞的建造是使用活塞头呈锥面，并且小于活塞裙。D7.Inafullfloatingpistonpin,thepinispreventedfromslidingagainstthecylinderwall

6、sby_______A.snapringsB.sealweldingC.apressfittingD.atongue-and-groove注在全浮动的活塞销上，扣环可以防止活塞销滑动而碰壁。A8.Theuseofpushrodsisnecessaryinadieselenginewhen______A.thecamshaftlocatedsomedistancebelowtherockerarms第133页共133页中华人民共和国海船船员适任考试·同步辅导教材轮机英语自学题库B.therockerarmsarepivotedneartheircentersC.twoormo

7、revalvesmustbeopenedandclosedatsametimeD.hydraulicvalvelashadjustersareused注当凸轮轴位于摇臂之下距离时，推杆的使用是必要的。A9.Inalargeslow-speedpropulsiondieselengine,theforceappliedtothecrossheadis______A.againstthecrossheadduringpowerstrokeandawayfromthecrossheadduringthecompressi