單項(xiàng)選擇題

A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）

A.ignition lag
B.engine horsepower
C.lube oil system pressure
D.specific fuel consumption

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The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）

A.governor flyweight action on a pilot valve which controls fuel injection
B.governor flyweight motion acting on fuel controls through suitable linkage
C.positioning a butterfly valve in the fuel delivery system positioning
D.a servomotor piston attached to the fuel controls

單項(xiàng)選擇題

Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?（）

A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above