编号问题选择A选择B选择C选择D答案注解1"Onalargedieselengineinstallation,crankshaftaxialalignmentismaintainedbythe________."pistonrodguidesenginethrustbearingcrossheadbearingmainshaftflexiblecouplingB在大型柴油机安装中，曲轴靠推力轴承保持轴向对中。2"Adieselenginewhichisratedfornormaloperationatacrankshaftspeedof800rpm,iscommonlyclassedasa________."slow-speeddieselmedium-speeddieselhigh-speeddieselconstant-speeddieselB曲轴转速800转／分以额定功率正常运行的柴油机称为中速柴油机。3Whichofthefollowingstatementsiscorrectconcerningavailableasternpowerfordieselmainpropulsionsystems?Asternpoweristobeprovidedinasufficientamounttosecurepropercontroloftheshipinallnormalcircumstances.Theasternpowerofthemainpropellingmachineryistoprovideforcontinuousoperationasternat60%oftheaheadrpmatratedspeed."Formainpropulsionsystemswithoutreversinggears,controllablepitchpropellersorelectricpropulsiondrive,runningasternisnottoleadtooverloadconditions.""Asternpoweravailablewillbeequaltoaheadpowerwhencontrollablepitchpropellersareutilized,thusdiscountingtheneedforincreasedoperatingparameters."A倒车功率必须能提供足够的功率确保在各种正常情况下能够对船舶进行适当的控制。4"Whentwomediumspeeddieselenginescoupledinparalleltoacommonpropellershaftthatoperatesatthesamespeedastheengines,whichoftheoperatingconditionslistedwillapply?"Fullhorsepowerisavailableaheadandastern.Oneenginemustberunningaheadandtheotherastern.Fullreversingtorqueisnotavailable.Mechanicalreductiongearingisrequired.D当两台中速柴油机并排连接到同速运转的普通螺旋桨轴上，需要机械减速装。5Whichofthelisteddesignfeaturesismostcommontoatwo-stroke/cyclelow-speedmainpropulsiondieselengine?Crossheadconstruction.Cross-scavengingairflow.Trunktypepistons.Singlereductiongearing.A低速二冲程主推进柴油机普遍采用十字头结构。6Adisadvantageofatwo-stroke/cycledieselengineis________.morepowerstrokesperrevolutiontheuseofscavengeairmorecomplicatedvalvegearhigherworkingtemperaturesofthepistonandcylinderD二冲程柴油机的缺点是气缸头的温度高。7"Incomparingenginesofequalhorsepower,higherexhaustgastemperaturesoccurina/an________."opposed-pistonenginedouble-actingenginetwo-stroke/cycleenginefour-stroke/cycleengineD与相同马力的柴油机相比，四冲程柴油机的废气温度高。8Thedoublebottominavesselisaspacecomprisedof________.platingformingtheengineroomtanktopdoubleplatinginstalledovertheflatkeelplateawatertightboundaryformedbytheinnerbottomcompartmentsbetweentheinnerandouterbottomsD船的双底壳是由内外两层构成的。9Awaterjacketisplacedaroundtheexhaustmanifoldsofpropulsiondieselenginesto________.reduceheatradiationtotheengineroomaidinpreventingturbochargeroverheatingcondenseanddrainmoisturefromexhaustgasesdampenexhaustgaspulsationsinthemanifoldA环绕排气总管的水套是为了减少对机舱的热辐射。10"Whichofthelistedtypesofstaringsystemsisoftenusedonlarge,lowspeed,directreversing,mainpropulsiondieselengines?"Electric.Hydraulic.Air.Alloftheabove.C大型低速可逆转主推进柴油机使用空气起动系统。11Theover-speedtripinstalledonmostdieselenginewillstoptheenginebyshuttingoffthe________.watersupplyfueloilsupplylubeoilsupplyexhaustdamperB大多数柴油机安装的超速保护（停车）装置通过切断燃油供油使发动机停车。12"Inacommonrailsystem,excessivepressureintheheadermaybecausedby________."improperadjustmentofthebypassvalveadribbleinthefuelinjectionnozzleinsufficientleak-offthroughinjectionnozzlepackingamalfunctioninginjecti...
