轮机英语试题.doc

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1、中华人民共和国海事局2007年第6期海船船员适任统考试题（总第44期）科目：轮机英语试卷代号：801适用对象：无限/近洋航区3000KW及以上船舶轮机长（本试卷卷面总分100分，及格分为70分，考试时间100分钟）答题说明：请选择一个最合适的答案，并将该答案案答题卡要求，在其相应位置上用2B铅笔涂黑。第1题至68题，每题1分，第69题至76题，每题1.5分，第77题至78题，每题10分.一、单项选择题1.Modernmarinedieselenginesequippedwithmechanicalfuelinjectionoperate

2、onacombustionphasewithinthecyclewhichis.A.entirelyconstantpressureB.entirelyconstanttemperatureC.acombinationofconstantvolumeandconstantpressureD.acombinationofconstanttemperatureandconstantpressure2.TheaveragepressureexertedonapistonduringeachpowerstrokeistermedA.indica

3、tedhorsepowerB.meaneffectivepressureC.exhaustbackpressureD.compressionpressure3.Anindividualinjectionpumpisdesignedforvariablebeginningandconstantendingofinjection.Fordieselenginesoperatingatconstantspeeds,thestartofinjectionwillA.advanceastheloadincreasesB.retardasthelo

4、adincreasesC.remainunchangedregardlessofloadD.alwaysoccurattopdeadcenter4.Onoppositeendsofasingleshaftofaturbo-blowerareagasdrivenandaaircompressor,whicharesealedeachother.A.chargeairreceiverB.scavengingairbeltC.turbineD.aircooler5.Theadverseeffectsofburninghighsulfurfue

5、lcanbecompensatedforbyusingcylinderoilhavingsufficient____.A.dispersantadditivesB.flocpointC.alkalinityadditivesD.ignitionquality6.Tocheckthesettingoftheover-speedtriponadiesel-poweredgenerator,youwouldusea.A.torsionmeterB.tachometerC.dynamometerD.ponybrake7.Thebesttoolt

6、ouseforremovingthecarbonridgeatthetopofanenginecylinder,priortoremovingthepiston,istouse.A.anelectricgrinderB.ametalscraperC.areamerD.athree-winghome8.Faultyoperationofdieselenginefuelinjectionnozzlescanbeadirectcauseof.A.excessivefuelnozzleholdercoolingB.sedimentinthefu

7、elsupplyC.distortionofthefuelspraypatternD.improperatomizationofthefuel9.Earlyfuelinjectiontimingisindicatedbythecylinderpressurebeing.A.abovenormalwithabelownormalexhausttemperatureB.abovenormalwithanormalexhausttemperatureC.belownormalwithanormalexhausttemperatureD.bel

8、ownormalwithanabovenormalexhausttemperature10.Whichofthefollowingadjustmentsisalwaysrequiredwheneverthe