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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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 -
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I am maintaining my course and speed. You can（）ahead of me.
A.overtake
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