A head-on situation at night is one in which you see dead ahead a vessel showing（）.<br>A:one sidelight<br>B:one sidelight and a masthead light<br>C:one sidelight and two masthead lights<br>D:both sidelights of a vessel and her masthead light(s)

A head-on situation at night is one in which you see dead ahead a vessel showing（）.
A:one sidelight
B:one sidelight and a masthead light
C:one sidelight and two masthead lights
D:both sidelights of a vessel and her masthead light(s)

出自：海船船员证

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