单项选择题
All cargo wires need to be （）.
A.greased B.oiled C.washed D.repaired
单项选择题 （）should be greased every month or two and it should be kept on a reel when not in use.
单项选择题 Wire rope should be greased （）when not in use.
单项选择题 Coil left-handed ropes （）.
