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單項選擇題

Do you want the derrick adjusted upwards or downwards? （）

A. Top the derrick.
B. Yes, I do.
C. No, I don’t.
D. Sorry, I don’t know.

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單項選擇題

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

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

單項選擇題

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

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

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