單項(xiàng)選擇題How much is the percent of air transportation in all modes?（）

A.Less than 1%      
B.Lowest      
C.Lower            
D.Low


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1.單項(xiàng)選擇題What kind of products do the air carriers deliver? （）

A.The high value     
B.Low density or weight
C.A and B           
D.Shortest time to transport

2.單項(xiàng)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

3.單項(xiàng)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

4.單項(xiàng)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

5.單項(xiàng)選擇題The international trade needs the（） to fulfill it’s transaction.

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