[单选题]What kind of products do the air carriers deliver? （）

正确答案 ：C

A and B

[单选题]Where is the most air freight shipped in the passenger aircraft?（）

正确答案 ：C

In the lower part

[单选题]What is the meaning “speed is not of primary importance”?（）

正确答案 ：B

Speed is not the most important

查看原题 查看所有试题