单项选择题
When a line is subject to wear where it passes through a mooring chock，it should be（）.
A.wormed，parceled，and served B.wrapped with heavy tape C.wrapped with chafing gear D.wrapped in leather
单项选择题 When a line is laid down in loose，looping figure-eights，it is said to be（）.
单项选择题 What type of line melts easiest（）.
单项选择题 What should you do to a line to prevent fraying where it passes over the side of the vessel（）.
