单项选择题
A long splice in a line（）.
A.is used in running rigging B.doubles the size of the line C.is only used on fiber rope D.is very weak
单项选择题 A hook that will release quickly is a（）.
单项选择题 A figure eight knot is used to（）.
单项选择题 A fiber rope can be ruined by dampness because it may（）.
