單項選擇題

Bosun, I’ve never operated the hatch covers （）by hydraulic power.

A.powered
B.driven
C.moved
D.opened

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單項選擇題

When the weather becomes bad, the hatch covers will be （）.

A.closed
B.opened
C.handled
D.stopped

單項選擇題

After operation, drop the control levers into stowing hole, and （）the electric motor.

A.start
B.stop
C.move
D.open