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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

What is the meaning of “short hauls”?（）

A.Near way
B.The distance is not long
C.Direct line
D.Short road

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.No
D.I don’t know

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