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[主观题]
The four-stroke engine is used for _____ and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.
A.alternator
B.turbo-charger
C.remote controller
D.windlass
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A.alternator
B.turbo-charger
C.remote controller
D.windlass
第1题
A.make clear of your authority
B.make friends with ships crew
C.call the first engineer if there is a problem
D.call the master if there is a problem
第2题
A.An alternator
B.fresh water generator
C.A compressor
D.A clarifier
第3题
A.During operation at low speed
B.During operation at rated speed, but low power output
C.During acceleration
D.All of the above
第4题
A.flame relief valve
B.flame stopper
C.safety valve
D.flame arrester
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