單項(xiàng)選擇題

Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.

A.performance
B.horsepower output
C.fuel consumption
D.scavenge effect

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單項(xiàng)選擇題

Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.

A.low compression pressure
B.increased piston wear
C.increased cylinder lube oil consumption
D.poor contact between compression rings and liner

單項(xiàng)選擇題

In describing engine operation, what does the term “cycle” mean?（）

A.The sequence of events that produce a power pulse
B.One rotation of the engine crankshaft
C.One stroke of a piston
D.All of the above

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