单项选择题
Cargoes which（）an explosive, inflammable, poisonous and corrosive nature are called dangerous goods.
A.is B.are of C.is of D.are
单项选择题 Collision rules（）apply to all vessels upon the high seas.
单项选择题 Compared to manila line,size for size, nylon line（）.
单项选择题 Dry cargoes are those commodities that（）.
