单项选择题
（）should be greased every month or two and it should be kept on a reel when not in use.
A. Wire rope B. Hemp rope C. Nylon rope D. Wooden rope
单项选择题 Wire rope should be greased （）when not in use.
单项选择题 Coil left-handed ropes （）.
单项选择题 Coil the right-handed ropes（）.
