The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.<br>A:ballasting<br>B:deballasting<br>C:disconnecting<br>D:hanging off

The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.
A:ballasting
B:deballasting
C:disconnecting
D:hanging off

出自：海船船员证

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