单项选择题
Bulk cargo refers to（）.
A.cargo which occupies a large volume of space B.cargo which requires refrigeration C.cargo which is very dense D.homogeneous cargo not enclosed in a container
单项选择题 Before loading bulk grain，bilge wells must be covered to（）.
单项选择题 Bags are usually stowed in between the bulk grain（）.
单项选择题 Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.
