An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.<br>A:icebreaker support is finished<br>B:icebreaker support is commencing<br>C:the icebreaker is icebound<br>D:the icebreaker is beset

An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
A:icebreaker support is finished
B:icebreaker support is commencing
C:the icebreaker is icebound
D:the icebreaker is beset

出自：海船船员证

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