Buoys which mark isolated dangers are painted with alternating（）.<br>A:red and black bands<br>B:green and black bands<br>C:red and white stripes<br>D:green and white bands

Buoys which mark isolated dangers are painted with alternating（）.
A:red and black bands
B:green and black bands
C:red and white stripes
D:green and white bands

出自：海船船员证

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