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單項選擇題

What is the disadvantage for air transportation? （）

A. Quick but not safe
B. Less frequency
C. It can’t lift heavy goods
D. The highest cost in all transport modes

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單項選擇題

Loss and damage ration for motor are lower than any other modes. Is it correct?（）

A. Yes
B. Depend
C. Not
D. I don’t know

單項選擇題

The international trade needs the （） to fulfill its transaction.

A. Great amount of shipped
B. Tracks
C. Logistics
D. Ships

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