單項(xiàng)選擇題What is the meaning “speed is not of primary importance”?（）

A.Speed is important          
B.Speed is not the most important
C.Speed is mainly important    
D.Speed is first importan


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1.單項(xiàng)選擇題What are transported mainly by water?（）

A.Raw materials
B.Heavy, bulky and low value commodities
C.Semi-processed
D.Great amount goods

2.單項(xiàng)選擇題How many categories are there in water transport?（）

A.2         
B.3        
C.4          
D.Not available in the paragraph

3.單項(xiàng)選擇題How many tons does the cargo 737 carry?（）

A.100 tons          
B.Not clear       
C.More than 100 tons  
D.I don’t know

4.單項(xiàng)選擇題Where is the most air freight shipped in the passenger aircraft?（）

A.Separately         
B.In same level   
C.In the lower part    
D.Not mention here

5.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