单项选择题
A. Different value B. Different value of same goods at the different place C. Different goods D. Different value of different goods at the same place
（）creates time value.A. TransportationB. Good flowC. Di...
单项选择题（）creates time value.
A. Transportation B. Good flow C. Different location D. Storage
What is the meaning “cost-effective”? （）A. cost reduceB...
单项选择题What is the meaning “cost-effective”? （）
A. cost reduce B. cost increase C. effective D. efficient
What kind of products do the air carriers deliver? （）A....
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. To add cost
