單項選擇題

An automated diesel engine should normally shut down due to （）

A.low lube oil temperature
B.high ambient air temperature
C.low tube oil pressure
D.high exhaust system back pressure

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單項選擇題

The minimum speed an engine must attain before ignition can occur depends upon （）.

A.the type and size of the engine
B.the condition of the engine
C.ambient temperature
D.all of the above

單項選擇題

For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

A.it has a longer power stroke
B.more air gets into the cylinder each stroke
C.it develops twice as many power strokes at the same speed
D.higher combustion pressure is developed