单项选择题
For cargoes（）grain meals，coal，ventilation is needed to prevent them（）spontaneous combustion.
A.i.e.／of B.for instance／away C.for example／off D.such as／from
单项选择题 Bulk cargo refers to（）.
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（）.
