Areas enclosed by a long and short dashed magenta line indicate （）.<br>A:cable areas<br>B:dumping grounds<br>C:fish trap areas<br>D:precautionary areas

Areas enclosed by a long and short dashed magenta line indicate （）.
A:cable areas
B:dumping grounds
C:fish trap areas
D:precautionary areas

出自：海船船员证

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