[单选题]（）is the disadvantage for air transportation?

正确答案 ：D

the highest cost in all transport modes

[单选题]（）is the way to deliver goods for different shippers in the same truck by the most economic route.

正确答案 ：A

Joint Distribution

[单选题]Pipelines are not （）

正确答案 ：A

Labor-intensive

查看原题 查看所有试题