单项选择题
What is the same meaning of location value? （）
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
单项选择题 （）creates time value.
单项选择题 What is the meaning “cost-effective”? （）
单项选择题 What kind of products do the air carriers deliver? （）
