单项选择题

Sisal rope is less strong and less flexible than （）.

A. hemp rope
B. manila rope
C. natural fiber ropes
D. wooden rope

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单项选择题

Manila is a well-known （）rope.

A. natural fiber
B. synthetic fiber
C. moor
D. manila

单项选择题

Ropes can be divided into three types: （）.

A. natural fiber rope, manila rope and synthetic rope
B. natural fiber rope, synthetic rope and wire rope
C. synthetic rope, manila rope and wire rope
D. synthetic rope, manila rope and wooden rope

单项选择题

Ropes can be divided into （）basic types.

A.3
B.4
C.5
D.6