单项选择题

I can not take any actions to avoid close quarters situation with you，because your navigation lights（）.

A.is not visible
B.are not invisible
C.are not visible
D.can easily be seen

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单项选择题

A.My vessel is leaking
B.My vessel is producing fresh water
C.My vessel is producing sea water
D.Sea water is de-salted on board my vessel

单项选择题

A.overtake
B.pass
C.leave
D.come

单项选择题

A.on
B.in
C.at
D.under