单项选择题

The function of the cut-off lever is（）

A.to provide electrical signal
B.to provide feed-back
C.to provide local manual control
D.to provide right rudder angle

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单项选择题

The advantage of the control equipment is（）

A.that the transmitter is on the bridge
B.that local manual control can be achieved
C.that remote control can be achieved
D.simple in construction and reliable in operation

单项选择题

The spur geared mooring winches have advantages over worm geared ones in（）

A.higher efficiency of the gear train while reversing
B.the higher gear ratio
C.the multi-start feature
D.higher recovering speed

单项选择题

In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.

A.lower；igher
B.maximum；higher
C.predetermined minimum；higher
D.predetermined maximum；lower