A six-strand composite rope made up of alternate fiber and wire strands around a fiber core is called（）.

A.independent
B.lang lay
C.preformed
D.spring lay

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

A.can be released while under strain
B.is used for boat falls
C.is used for extra heavy loads
D.is used for light loads only