A white buoy with an open-faced orange diamond on it indicates（）.<br>A:danger<br>B:vessels are excluded from the area<br>C:the buoy is a mooring buoy<br>D:operating restrictions are in effect

A white buoy with an open-faced orange diamond on it indicates（）.
A:danger
B:vessels are excluded from the area
C:the buoy is a mooring buoy
D:operating restrictions are in effect

出自：海船船员证

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