【单选题】A patent issued by one country when an invention has already been patented in another country, is called a:
【单选题】下列哪一项不属于微观经济学的研究对象( )
【简答题】1 什么是计算机网络? 请介绍一下计算机网络的组成和功能。
【单选题】为确保旅游业的健康发展,我国正在完善旅游质量四级监督管理体系,其中最基本的单位,也是目前需要加强和完善的是( )。
【单选题】下列哪一项不属于多品牌战略的优势( )
C.
共同壮大主品牌实力的策略,增加了市场的总体占有率
D.
分散风险,当某种品牌出现问题时,避免其他品牌受到牵连
【简答题】Explain how a mutually beneficial trade is possible in a two-country two-good model even when one of the countries has absolute advantage in the production of both the commodities.