The average of the forward and after drafts is the（）.<br>A:mean draft<br>B:true mean draft<br>C:mean of the calculated drafts<br>D:draft at the center of flotation

The average of the forward and after drafts is the（）.
A:mean draft
B:true mean draft
C:mean of the calculated drafts
D:draft at the center of flotation

出自：海船船员证

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