单项选择题
A.greased B.oiled C.washed D.repaired
（）should be greased every month or two and it should be...
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
Wire rope should be greased （）when not in use.A. every ...
单项选择题Wire rope should be greased （）when not in use.
A. every half a month B. every month or two C. every half a year D. every year
Coil left-handed ropes （）.A. clockwiseB. anticlockwiseC...
单项选择题Coil left-handed ropes （）.
A. clockwise B. anticlockwise C. to the center D. to the left
