單項(xiàng)選擇題

In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.

A.two crankshaft revolutions in a two-stroke/cycle engine
B.two power strokes in a two-stroke/cycle engine
C.one power stroke in a two-stroke/cycle engine
D.two piston strokes in a two-stroke/cycle engine

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單項(xiàng)選擇題

If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.

A.at each control station
B.in the chief engineer’s quarters
C.in the captains quarters
D.All of the above are correct

單項(xiàng)選擇題

White smoke exhausting from an operating diesel engine may indicate （）.

A.a cracked liner
B.burning lube oil
C.an overloaded engine
D.insufficient combustion air