单项选择题
Where is the most air freight shipped in the passenger aircraft?（）
A. separately
B. Not clear
C. In the lower part
D. Not mention here
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相关考题
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单项选择题
How much is the percent of air transportation in all modes? （）
A. Less than 1%
B. Lowest
C. Lower
D. Low -
单项选择题
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 -
单项选择题
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
