单项选择题

A single vessel being towed alongside shall exhibit（）.

A.one all-round white light
B.sidelights and a sternlight
C.only the outboard sidelight and a sternlight
D.a masthead light，sidelights，and a sternlight

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A.comes directly over the bow
B.comes directly over the stern
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D.has no effect on the vessel

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A.get
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