For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.<br>A:selection of landmarks<br>B:character of sea bottom<br>C:strength of current and wind force<br>D:radius of ship swing to wind or tide

For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.
A:selection of landmarks
B:character of sea bottom
C:strength of current and wind force
D:radius of ship swing to wind or tide

出自：海船船员证

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