單項(xiàng)選擇題

In cargo crane, （） for lifting the load.

A.a hoisting motor
B.a luffing motor
C.a mooring motor
D.a slewing motor

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單項(xiàng)選擇題

Manually operated band brakes may be fitted and （） will have a brake arranged to fail-safe.

A.the drive pump
B.the drive motor
C.the warp end
D.the purchase

單項(xiàng)選擇題

The （） is used for hauling in or letting out the wires or ropes.

A.windlass
B.anchor capstan
C.turning gear
D.winch barrel