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單項選擇題

During the voyage, the derrick should be stowed （）.

A. fore
B. aft
C. fore and aft
D. lowered

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單項選擇題

（）are usually stowed both above and below deck.

A.Containers
B.Trucks
C.Machinery
D.Clamps

單項選擇題

There is no power for the （）.

A. derrick
B. winch
C. block
D. heavy derrick

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