單項(xiàng)選擇題

The ratio of the brake horsepower to the indicate of a diesel engine is its （）

A.thermal efficiency
B.mechanical efficiency
C.brake thermal efficiency
D.volumetric efficiency

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In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）

A.wide compression rings are used
B.oil rings are located above the piston
C.chromium plating is used on all piston rings
D.oil rings are located near the bottom of the piston skirt

單項(xiàng)選擇題

An over-speed trip stops a diesel engine when the engine （）

A.runs out of fuel
B.has low lubricating oil pressure
C.exceeds a set maximum speed
D.has high cooling water temperature

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The ratio of the brake horsepower to the indicate of a diesel engine is its （）

你可能感興趣的試題

In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）

An over-speed trip stops a diesel engine when the engine （）