单项选择题
Containers are stowed both （）deck.
A. on top of B. on and along C. above and below D. below
单项选择题 When the derrick is stopped, the guy must be（）.
单项选择题 （）cargo has different characteristics and forms of packaging. They may be in bags, bundles, cases or steel drums.
单项选择题 All the cargo wires must be greased （）.
