单项选择题
Under identical load conditions，nylon，when compared with natural fiber line，will stretch（）.
A.less and have less strength B.more and have less strength C.more and have greater strength D.less and have greater strength
单项选择题 Uncoiling manila line improperly can result in a(n)（）.
单项选择题 Two mooring lines may be placed on the same bollard and either one cast off first if（）.
单项选择题 Tugs sometimes shackle a length of chain in the towline in order to（）.
