单项选择题
A.manila B.nylon C.polypropylene D.dacron
The rope which is rove from the truck to be used with a...
单项选择题The rope which is rove from the truck to be used with a bos’n chair is called a（）.
A.gantline B.life line C.strop D.whip
The rolling hitch could be used to（）.A.join two lines o...
单项选择题The rolling hitch could be used to（）.
A.join two lines of different sizes B.join two lines of equal sizes C.add strength to a weak spot in a line D.act as a stopper to transfer a line under strain
The purpose of a devil’s claw is to（）.A.act as a chain ...
单项选择题The purpose of a devil’s claw is to（）.
A.act as a chain stopper B.prevent the windlass from engaging C.prevent the chain from fouling on deck D.control the wildcat
