During the day，a vessel picking up a s

During the day，a vessel picking up a submarine cable shall carry（）.

Athree shapes，the highest and lowest shall be red balls，and the middle shall be a white diamond
Btwo black balls
Cthree shapes; the highest and lowest shall be black balls，and the middle shall be a red diamond
Dthree shapes; the highest and lowest shall be black balls and the middle shall be a black diamond

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分类：船员职务名称题库

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