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單項(xiàng)選擇題

There is no power for the （）.

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

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單項(xiàng)選擇題

The bosun is greasing the （）. It is well greased.

A. rope
B. cargo wire
C. ladder
D. All above.

單項(xiàng)選擇題

Is this（）longer or shorter?

A. cargo wire
B. wire cargo
C. wire of cargo
D. heavy cargo