I can not take any actions to avoid close quarters situation with you，because your navigation lights（）.<br>A:is not visible<br>B:are not invisible<br>C:are not visible<br>D:can easily be seen

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

出自：海船船员证

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