單項(xiàng)選擇題

Some general cargo is handled by （）.

A. shore cranes
B. heavy derricks
C. containers
D. equipment

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單項(xiàng)選擇題

Don’t stand （）the derrick.

A.above
B.top
C.side
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單項(xiàng)選擇題

Don’t shift the （）as you like.

A.guy
B.block
C.anchor
D.wheel