Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of（）.

[单选题]The saying“He who dies rich, dies disgraced” properly means thatA． the wealthy people should give away their fortunes after deathB． the wealthy people should feel ashamed for their assetsC． the wealthy people should abandon their careers for charitie

[单选题]［A］ asserting ［B］ alleging ［C］ maintaining ［D］ testifying

[单选题]Theoretical perfect combustion in a diesel engine yields by-products of_____.A．aldehydes and carbon dioxideB．water vapor and carbon monoxideC．nitrogen and carbon monoxideD．water vapor and carbon dioxide

[单选题]A． controllable pitch propeller on a diesel driven vessel eliminates the need forA．friction clutchesB．disconnect clutchesC．reversing gearsD．reduction gears

[单选题]Theoretical perfect combustion in a diesel engine yields by-products of （）.A . aldehydes and carbon dioxideB . water vapor and carbon monoxideC . nitrogen and carbon monoxideD . water vapor and carbon dioxide

[单选题]A． smoking exhaust from an operating diesel engine could be caused by( ).A．low sulfur content in the fuelB．a loose injector inlet connectionC．late fuel injectionD．high injection pressure

[单选题]The distance from TDC to BDC of the diesel engine is called （）.A . gapB . clearanceC . radiusD . stroke

[单选题]When Lloyd Nickson dies, he will ________.[A] face his death with calm characteristic of euthanasia[B] experience the suffering of a lung cancer patient [C．] have an intense fear of terrible suffering[D] undergo a cooling off period of seven days

[单选题]The camshaft on a four-stroke/cycle diesel engine provides a means to operate the （）.A . fuel injectorsB . exhaust valvesC . intake valvesD . all of the above

[单选题]A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.A . cylinder headsB . exhaust valvesC . scavenging airD . injector