單項(xiàng)選擇題

Precautionary measures must be taken to（）safety of the stevedores，cargo and the ship.

A.insure
B.ensure
C.assure
D.assume

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Please stow the drums（）ends.

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單項(xiàng)選擇題

Please choke up the drums to prevent（）.

A.moving
B.movement
C.from the movement
D.them from moving