You should （）great care of this line.

单项选择题This cargo wires has more than ten percent （） wires.

A.damaged
B.broken
C.missing
D.repaired

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.

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.

A. every half a month
B. every month or two
C. every half a year
D. every year

单项选择题Coil left-handed ropes （）.

A. clockwise
B. anticlockwise
C. to the center
D. to the left