A. cheaper B. more expensive C. less expensive D. cheap
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
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
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