单项选择题
A.prevent stress concentration in the bulwark
B.permit easy jettison of deck cargo in an emergency
C.provide openings through the bulwarks for mooring lin
D.allow water shipped on deck to flow off rapidly
单项选择题 An advantage of nylon rope over manila rope is that nylon rope（）.
单项选择题 All wire rope used in shipboard cargo gear must be identified and described in a certificate. The certificate shall certify all of the following EXCEPT the（）.
单项选择题 All the following except（）are fittings for securing and lashing containers on board ships.