A permanent chain chasing system is used to（）.<br>A:clean anchor chain as it's hauled in<br>B:recover anchors which have lost their buoys<br>C:run and retrieve anchors<br>D:prepare anchor chain for inspection

A permanent chain chasing system is used to（）.
A:clean anchor chain as it's hauled in
B:recover anchors which have lost their buoys
C:run and retrieve anchors
D:prepare anchor chain for inspection

出自：海船船员证

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