單項(xiàng)選擇題

Please adjust the derrick （）(向上).

A.upwards
B.downwards
C.forwards
D.backwards

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單項(xiàng)選擇題

The （）(袋裝貨) can’t be unloaded by hooks.

A. bagged cargo
B. drummed cargo
C. cased cargo
D. deck cargo

單項(xiàng)選擇題

Please adjust the derrick （）(向下).

A.upwards
B.downwards
C.forwards
D.backwards