单项选择题
What are the major goods moved in pipeline transport? （）
A.Natural gas B.Crude oil C.water D.A, B and C
单项选择题 The main disadvantage is（）in global logistics.
单项选择题 Developed countries, like the US, have moved the some manufactures to the developing countries. Is it true or not? （）
单项选择题 What is the main topic above paragraph? （）
