Attention is called to the fact that in many cases charted depths may be decreased by up to（）.<br>A:one natutical mile<br>B:2 kilometers<br>C:5 cables only<br>D:one fathom

Attention is called to the fact that in many cases charted depths may be decreased by up to（）.
A:one natutical mile
B:2 kilometers
C:5 cables only
D:one fathom

出自：海船船员证

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