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1、編號(hào)問(wèn)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(jī)安裝中，曲軸靠推力軸承保持軸向?qū)χ小?"Adieselenginewhichisratedfornormaloperationatacrankshaftspe
2、edof800rpm,iscommonlyclassedasa________."slow-speeddieselmedium-speeddieselhigh-speeddieselconstant-speeddieselB曲軸轉(zhuǎn)速800轉(zhuǎn)／分以額定功率正常運(yùn)行的柴油機(jī)稱(chēng)為中速柴油機(jī)。矚慫潤(rùn)厲釤瘞睞櫪廡賴(lài)。3Whichofthefollowingstatementsiscorrectconcerningavailableasternpowerfordieselmainpropulsionsystems?Asternpoweris
3、tobeprovidedinasufficientamounttosecurepropercontroloftheshipinallnormalcircumstances.Theasternpowerofthemainpropellingmachineryistoprovideforcontinuousoperationasternat60%oftheaheadrpmatratedspeed."Formainpropulsionsystemswithoutreversinggears,controllablepitchprope
4、llersorelectricpropulsiondrive,runningasternisnottoleadtooverloadconditions.""Asternpoweravailablewillbeequaltoaheadpowerwhencontrollablepitchpropellersareutilized,thusdiscountingtheneedforincreasedoperatingparameters."A倒車(chē)功率必須能提供足夠的功率確保在各種正常情況下能夠?qū)Υ斑M(jìn)行適當(dāng)?shù)目刂?。聞?chuàng)溝燴鐺險(xiǎn)愛(ài)氌譴凈
5、。4"Whentwomediumspeeddieselenginescoupledinparalleltoacommonpropellershaftthatoperatesatthesamespeedastheengines,whichoftheoperatingconditionslistedwillapply?"Fullhorsepowerisavailableaheadandastern.Oneenginemustberunningaheadandtheotherastern.Fullreversingtorqueisno
6、tavailable.Mechanicalreductiongearingisrequired.D當(dāng)兩臺(tái)中速柴油機(jī)并排連接到同速運(yùn)轉(zhuǎn)的普通螺旋槳軸上，需要機(jī)械減速裝。殘騖樓諍錈瀨濟(jì)溆塹籟。5Whichofthelisteddesignfeaturesismostcommontoatwo-stroke/cyclelow-speedmainpropulsiondieselengine?Crossheadconstruction.Cross-scavengingairflow.Trunktypepistons.Singlereduct
7、iongearing.A低速二沖程主推進(jìn)柴油機(jī)普遍采用十字頭結(jié)構(gòu)。釅錒極額閉鎮(zhèn)檜豬訣錐。6Adisadvantageofatwo-stroke/cycledieselengineis________.morepowerstrokesperrevolutiontheuseofscavengeairmorecomplicatedvalvegearhigherworkingtemperaturesofthepistonandcylinderD二沖程柴油機(jī)的缺點(diǎn)是氣缸頭的溫度高。彈貿(mào)攝爾霽斃攬磚鹵廡。7"Incomparingengin
8、esofequalhorsepower,higherexhaustgastemperaturesoccurina/an________."opposed-pistonenginedouble-actingenginetwo-stroke/cycleenginef
