单项选择题
A.When B.Why C.What D.Either A or B
The （）of the derrick is out of order.A.blackB.backC.blo...
单项选择题The （）of the derrick is out of order.
A.black B.back C.block D.broken
Renew a cargo runner, please. （）A.fallB.stayC.guyD.slin...
单项选择题Renew a cargo runner, please. （）
A.fall B.stay C.guy D.sling
We use TEU as the unit of the standard containers. Its ...
单项选择题We use TEU as the unit of the standard containers. Its length is（）.
A.40ft B.20ft C.20m D.40m
