单项选择题

In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel（）.

A.meeting another head-on
B.crossing the course of another
C.overtaking another
D.Any of the above

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航海英语综合练习

In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel（）.