海船船员 - 三管轮

单选题

The viscosity regulator controls the _____ of the fuel oil in order to provide the oil at

A. temperature
B. pumping rate
C. pressure
D. heat

单选题

An alternator switchboard has a synchroscope and synchronizing lamps, if the synchroscope

A. The breaker should be closed when one synchronizing lamp is dark and the other is bright
B. The breaker should be closed when both synchronizing lamps are bright
C. The frequency meter should be used to determine that the incoming alternator frequency is slightly higher than the bus
D. A portable phase sequence indicator must be used to verify the information from the lamps

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单选题

During the watch at sea, where situations occur in the machine apace which may affect the

A. the chief engineer
B. the master
C. the bridge
D. the company superintendent

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单选题

The insertion of shims between the foot of a marine type connecting rod and a bearing box

A. increased compression ratio
B. decreased compression ratio
C. increased bearing clearance
D. decreased bearing clearance

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单选题

A centrifugal pump produces flow with a resulting discharge head by energy conversionIt is

A. mechanical energy to kinetic energy to potential energy
B. mechanical energy to potential energy to kinetic energy
C. potential energy to mechanical energy to kinetic energy
D. kinetic energy to mechanical energy to potential energy

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单选题