In four-stroke diesel engine, the cycle of events is completed in () of crankshaft.
A.one revolution
B.two revolutions
C.four revolutions
第1题
A.fresh water pump
B.sea water pump
C.fresh water generator
第2题
A.turning gear
B.steering gear
C.chain gear
第3题
A.atmosphere
B.the fresh water
C.compressed air
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