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 If a vessel takes a sudden severe list or trim from an unknown cause，you should FIRST（）.
单项选择题 The disinfection of various compartments in a vessel by filling them with a gaseous agents to destroy rats etc.means（）.
