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單項選擇題

-Why do you stop working?
- The winch is （）.

A. work well
B. in good order
C. out of order
D. good

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單項選擇題

The safe working load of the （）is 100 tons.

A.single derrick
B.derrick
C.heavy derrick
D.deck

單項選擇題

Swing the （）to starboard side, please.

A.winch
B.derrick
C.crane
D.deck

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