单项选择题 From least integrated to most integrated, the levels of economic integration are a: （ ） A. common market, a free trade area, an economic union, a customs union, and a political union. B. free trade area, a customs union, a common market, an economic union, and a political union. C. customs union, a free trade area, a common market, a political union, and an economic union. D. common market, an economic union, a customs union, a free trade area, and a political union.

单项选择题 企业在进行并购之后，经常会出现双方文化之间的冲突、管理人员的职位安排等冲突，从而对管理能力提出了较高的要求。（ ）A.对B.错

单项选择题 A.B.C.D.