单项选择题
A.runner B.run C.running D.runned
Wire ropes should be greased （）.A. every monthB. every ...
单项选择题Wire ropes should be greased （）.
A. every month B. every two months C. every three months D. A or B
The （）of the derrick is 5 tons.A.GTB.SWLC.DWTD.TDW
单项选择题The （）of the derrick is 5 tons.
A.GT B.SWL C.DWT D.TDW
Have you got （）lashing wires?A.plentyB.muchC.a lotD.eno...
单项选择题Have you got （）lashing wires?
A.plenty B.much C.a lot D.enough
