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1、編號問題選擇A選擇B選擇C選擇D答案注解1"Onalargedieselengineinstallation,crankshaftaxialalignmentismaintainedbythe________."pistonrodguidesenginethrustbearingcrossheadbearingmainshaftflexiblecouplingB在大型柴油機安裝中，曲軸靠推力軸承保持軸向對中。2"Adieselenginewhichisratedfornormaloperationatacranksha
2、ftspeedof800rpm,iscommonlyclassedasa________."slow-speeddieselmedium-speeddieselhigh-speeddieselconstant-speeddieselB曲軸轉速800轉／分以額定功率正常運行的柴油機稱為中速柴油機。矚慫潤厲釤瘞睞櫪廡賴。3Whichofthefollowingstatementsiscorrectconcerningavailableasternpowerfordieselmainpropulsionsystems?Ast
3、ernpoweristobeprovidedinasufficientamounttosecurepropercontroloftheshipinallnormalcircumstances.Theasternpowerofthemainpropellingmachineryistoprovideforcontinuousoperationasternat60%oftheaheadrpmatratedspeed."Formainpropulsionsystemswithoutreversinggears,control
4、lablepitchpropellersorelectricpropulsiondrive,runningasternisnottoleadtooverloadconditions.""Asternpoweravailablewillbeequaltoaheadpowerwhencontrollablepitchpropellersareutilized,thusdiscountingtheneedforincreasedoperatingparameters."A倒車功率必須能提供足夠的功率確保在各種正常情況下能夠對
5、船舶進行適當的控制。聞創(chuàng)溝燴鐺險愛氌譴凈。4"Whentwomediumspeeddieselenginescoupledinparalleltoacommonpropellershaftthatoperatesatthesamespeedastheengines,whichoftheoperatingconditionslistedwillapply?"Fullhorsepowerisavailableaheadandastern.Oneenginemustberunningaheadandtheotheraster
6、n.Fullreversingtorqueisnotavailable.Mechanicalreductiongearingisrequired.D當兩臺中速柴油機并排連接到同速運轉的普通螺旋槳軸上，需要機械減速裝。殘騖樓諍錈瀨濟溆塹籟。5Whichofthelisteddesignfeaturesismostcommontoatwo-stroke/cyclelow-speedmainpropulsiondieselengine?Crossheadconstruction.Cross-scavengingairflow
7、.Trunktypepistons.Singlereductiongearing.A低速二沖程主推進柴油機普遍采用十字頭結構。釅錒極額閉鎮(zhèn)檜豬訣錐。6Adisadvantageofatwo-stroke/cycledieselengineis________.morepowerstrokesperrevolutiontheuseofscavengeairmorecomplicatedvalvegearhigherworkingtemperaturesofthepistonandcylinderD二沖程柴油機的缺點是氣缸
8、頭的溫度高。彈貿攝爾霽斃攬磚鹵廡。7"Incomparingenginesofequalhorsepower,higherexhaustgastemperaturesoccurina/an________."opposed-pistonenginedouble-actingenginetwo-stroke/cycleenginef
