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
点击查看答案&解析
相关考题
-
单项选择题
The size of wire rope is determined by the（）.
A.number of strands
B.number of wires in each strand
C.circumference
D.diameter -
单项选择题
The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
A.raise the boom
B.raise the hook
C.raise the boom and hook
D.check the boom stop -
单项选择题
The rope which is the lightest is（）.
A.manila
B.nylon
C.polypropylene
D.dacron
