单项选择题

It is more economical to use （）, because of their greater strength and longer useful lives.正确答案A

A. nylon ropes
B. manila ropes
C. sisal ropes
D. wooden ropes

相关考题

Natural fiber rope is made （）the fibers of different pl...

单项选择题Natural fiber rope is made （）the fibers of different plants.

A.up
B.from
C.of
D.with

Wire rope needs （）care than hemp and manila.A.goodB.wel...

单项选择题Wire rope needs （）care than hemp and manila.

A.good
B.well
C.better
D.best

（）is the strongest and the most elastic of all the synt...

单项选择题（）is the strongest and the most elastic of all the synthetic fiber ropes.

A. Hemp rope
B. Wire rope
C. Nylon rope
D. wood rope

例行工作