单项选择题
The tackle that raises and lowers the boom is（）.
A.the cargo fall
B.The cargo hoisting wire rope
C.the topping lift
D.the cargo whip
点击查看答案&解析
相关考题
-
单项选择题
The strongest of the natural fiber ropes is（）.
A.Nylon
B.Dacron
C.Manila
D.Sisal -
单项选择题
The square knot is used for（）.
A.forming temporary eyes in lines
B.joining two lines of equal size
C.keeping line from unlaying or fraying
D.joining two lines of different size -
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
