问题
单项选择题
Vessel towing with the current shall（）tow more than two boats and they must be towed alongside.
A.at times
B.at any time
C.at no time
D.at moment
答案
参考答案：C
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Vessel towing with the current shall（）tow more than two boats and they must be towed alongside.
A.at times
B.at any time
C.at no time
D.at moment
参考答案：C