问题
单项选择题
Vessels transiting the canal must have their accommodation ladders and cargo booms（）.
A.removed
B.rigged in
C.readjusted
D.tested
答案
参考答案：B
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Vessels transiting the canal must have their accommodation ladders and cargo booms（）.
A.removed
B.rigged in
C.readjusted
D.tested
参考答案：B