The air compressor pumps air to the_____
A.engine cylinder
B.air bottle
C.evaporator
D.condenser
第1题
A.main engines
B.main boilers
C.pipes and fittings
D.A and B
第2题
A.just below the crankcase
B.the oil cup for the exhaust valve
C.the pan for collecting drain fuel oil
D.oil circulating pump
第3题
A.a ship
B.a company
C.a charterer
D.a manager
第4题
A.the running-in period
B.the running process
C.gas exchange process
D.the boiler firing
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