单项选择题
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
单项选择题 A pelican hook（）.
单项选择题 A long pole with a hook at one end，used to reach for lines，is known as a（）.
单项选择题 A lashing used to secure two barges side by side，lashed in an X fashion，is called a（）.
