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
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相关考题
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单项选择题
Ropes can be divided into （）basic types.
A.3
B.4
C.5
D.6 -
单项选择题
It is very important for every sailor （）the characteristics of the ropes so that they can be for right jobs.
A.knowing
B.know
C.to know
D.knew -
单项选择题
This windlass （）now.
A. has repaired
B. is under repair
C. was repaired
D. had repaired
