《轮机英语》题库新题目练习

轮机英语题库新题目练习(02)2780、The efficient burning of fuel in a diesel engine is dependent upon the.（52923:新题:534）A.temperature of compressionB.atomization of the fuelC.penetration of the fuelD.all of the above V2781、What is the best way of stopping an over-speeding diesel engine?（52931:新题:535）A.Disconnect the battery cables from the starting motorB.Drain the hydraulic fluid from the governor sumpC.Block the flow of cooling air to the radiatorD.Secure the fuel supply and block the air intake，2782、One remedy for a high firing pressure,in addition to a high exhaust temperature in onecylinder of a diesel engine,is to.（52935:新题:536）A.increase scavenge air pressureB.reduce fuel booster pump pressureC.adjust the fuel rack/D.retard fuel injector timing2783、The blower type crankcase ventilation s y s t e m.（52942:新题:537）A.removes combustible gases in the crankcase 7B.prevents the formation of combustible gases in the crankcaseC.cools lubricating oilD.improves cold weather starting2784、The over-speed trip installed on most diesel engine will stop the engine by shutting off the.（52948:新题:538）A.water supplyB.fuel oil supply,C.lube oil supplyD.exhaust damper2785、White smoke exhausting from an operating diesel engine may i n d i c a t e.（52954:新题:539）A.a cracked liner/B.burning lube oilC.an overloaded engineD.insufficient combustion air2786 White smoke exhausting from a diesel engine can result f rom.（52958:新题:540）A.high exhaust temperatureB.high lube oil temperatureC.low turbo-charger speedD.low cooling water temperature/2787、White smoke issuing from the exhaust of an auxiliary diesel engine valve opening_.（52963:新题:541）A.the engine is overloadedB.the engine is cold，C.there is too much lube oil in the cylindersD.the turbocharger is fouled2788、White smoke exhausting from a diesel engine can be caused by.（52968:新题：542）A.low combustion temperature-B.a leaking fuel nozzle check valveC.late fuel injectionD.plugged oil-scraper ring hole2789、White smoke exhausting from a diesel engine can be caused by a.（52973:新题：543）A.high combustion temperatureB.high compression pressureC.cracked cylinder liner VD.fuel with a high vanadium content2790、Black smoke exhausting from an operating diesel engine can be caused by.（52977:新题:544）A.fuel dribbling from leaking fuel injectors SB.burning fuel with a high carbon contentC.burning fuel with a high vanadium contentD.burning fuel with a lower sulphur content2791、A device which functions to bring a diesel engine to a full stop to protect it from damage isknown as a/an.（52981:新题:545）A.torque limiterB.over-speed trip，C.over-speed governorD.load limit governor2792、Broken intake valve springs on one cylinder of a diesel engine can cause the engine to.（52987:546）A.Over speedB.fire improperly SC.lose oil pressureD.overheatrapidly2793、When the opening pressure of a diesel fuel injector is greater than that specified by theengine manufacturer,the.（52992:新题:547）A.quantity of fuel injected is decreased 7B.quantity of fuel injected w川 always be increasedC.start of injection is advancedD.duration of injection will always be greater2794、.Icreasing the exhaust valve tappet clearance of a diesel engine will result in the exhaustvalve o p e n i n g.（53001:新题:548）A.later and closing earlier 7B.later and closing laterC.earlier and closing earlierD.earlier and closing later2795、If a diesel engine fails to start,one of the likely causes is.（53006:新题:549）A.low compression temperature/B.low ambient air pressureC.high lube oil pump pressureD.high fuel oil booster pump pressure2796 What is commonly used to create turbulence in a diesel engine combustion system?（53015:新题：551）A.Shape of the piston crowns 7B.Increasing the compression ratiosC.Increasing the piston crownsD.Increasing the turbocharger gear ratio2797、What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（53133:新题:551）A.Spark plugB.Heat of compression 3C.CarburetorD.Glow plug2798、A smoking exhaust from an operating diesel engine could be caused by.（53134:新题：553）A.low sulfur content in the fuelB.a loose injector inlet connectionC.late fuel injection/D.high injection pressure2799、The purpose of compressing the air within the cylinder of a diesel engine is to.（53135:新题:554）A.produce the heat for ignition B.decrease injection lagC.increase ignition delayD.aid in exhausting burnt gases2800 The primary purpose of oil control rings on a diesel piston is to.（53136:新题:555）A.provide a reservoir for cylinder lubricationB.pump oil into the combustion space for cylinder coolingC.prevent excessive lubricating oil consumption/D.allow hydraulic oil film formation on the cylinder2801、Diesel engine lube oil diluted with fuel oil is indicated by.（53139:新题：556）A.decreased viscosity/B.decreased pour pointC.increased flash pointD.increased viscosity2802、To shut down a diesel engine after it exceeds the set maximum speed,which type of devicelisted should be used?（53141:新题:557）A.Speed limiting governorB.Over-speed governorC.Over-speed trip/D.Over-speed relay2