单项选择题
Freeing ports on a vessel with solid bulwarks（）.
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
点击查看答案&解析
相关考题
-
单项选择题
An advantage of nylon rope over manila rope is that nylon rope（）.
A.can be used in conjunction with wire or spring-lay rope
B.can be stored on decks exposed to sunlight
C.can hold a load even when a considerable amount of the yarns have been abraded
D.gives audible warning of overstress whereas manila does not -
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（）.
A.date of the test
B.load at which a test sample broke
C.name of the vessel
D.number of strands and of wires in each strand -
单项选择题
All the following except（）are fittings for securing and lashing containers on board ships.
A.stackers
B.twistlock
C.bridge fittings
D.containment booms
