單項選擇題

（）cargo is unloaded by large grain elevators.

A.General
B.Liquid
C.Drybulk
D.Wet

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單項選擇題

Rice is usually in （）.

A.drums
B.cases
C.bags
D.tanks

單項選擇題

Containers are stowed both （）deck.

A. on top of
B. on and along
C. above and below
D. below