单项选择题
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
The safe working load of the derrick is （）.A.5 tonsB.5 ...
单项选择题The safe working load of the derrick is （）.
A.5 tons B.5 metres C.5 feet D.5 mile
