单项选择题
Roll-on／roll-off ships are equipped with（）.
A.cargo elevators
B.conveyor belts
C.ramps
D.derricks and winches for cargo handling
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相关考题
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单项选择题
Precautionary measures must be taken to（）safety of the stevedores，cargo and the ship.
A.insure
B.ensure
C.assure
D.assume -
单项选择题
Please stow the drums（）ends.
A.at
B.in
C.on
D.by -
单项选择题
Please choke up the drums to prevent（）.
A.moving
B.movement
C.from the movement
D.them from moving
