A. as B. like C. for
A. something B. anything C. nothing
A. 价格差异化 B. 企业规模差异化 C. 产品主体差异化 D. 服务差异化
A. Right. B. Wrong. C. Doesn't say.
A. SCP理论 B. 产业结构 C. 可竞争理论 D. 产业组织