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單項(xiàng)選擇題

Worm geared automatic mooring winches are （） as the multi-start feature reduces the advantage of worm gear iethe high gear radio.

A.popular
B.common
C.in lead position
D.uncommon

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單項(xiàng)選擇題

The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）

A.spur geared
B.screw geared
C.worm geared
D.belt driven

單項(xiàng)選擇題

In automatic （） the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.

A.cranes
B.windlass
C.capstans
D.mooring winches

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