单项选择题
A. on top of B. on and along C. above and below D. below
When the derrick is stopped, the guy must be（）.A. take ...
单项选择题When the derrick is stopped, the guy must be（）.
A. take in B. slacked off C. stowed D. taken
（）cargo has different characteristics and forms of pack...
单项选择题（）cargo has different characteristics and forms of packaging. They may be in bags, bundles, cases or steel drums.
A.General B.Bulk C.Containerized D.Liquid
All the cargo wires must be greased （）.A.wellB.goodC.ni...
单项选择题All the cargo wires must be greased （）.
A.well B.good C.nice D.perfect
