单项选择题

Chafing gear is used to（）.

A.anchor the boat
B.pick up heavy loads
C.protect fiber rope from abrasion
D.strengthen mooring lines

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单项选择题

A.riding pawl
B.buckler
C.devil's claw
D.locking ring

单项选择题

A.over the bow or stern of a vessel
B.over the flat sides of a vessel
C.over the open water
D.over the dockside

单项选择题

A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls