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

点击查看答案&解析

上一题目录下一题

单项选择题

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

单项选择题

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

单项选择题

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