单选题We took usual steps:sounding the depth，reversing and stopping engine，paying out anchor and 60 fathoms of chain cable in the depth of 12 fathoms．The operation above is（）.AberthingBsearchingCanchoringDpicking up pilot
单选题
We took usual steps:sounding the depth，reversing and stopping engine，paying out anchor and 60 fathoms of chain cable in the depth of 12 fathoms．The operation above is（）.
A
berthing
B
searching
C
anchoring
D
picking up pilot
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