问题
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
答案
参考答案：C
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Roll-on/roll-off ships are equipped with（）.
A.cargo elevators
B.conveyor belts
C.ramps
D.derricks and winches for cargo handling
参考答案：C
