单选题Attention is called to the fact that in many cases charted depths may be decreased by up to （）.Aone nautical mileBtwo kilometersC5 cables onlyDone fathom
单选题
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
A
one nautical mile
B
two kilometers
C
5 cables only
D
one fathom
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