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　　 Oligopoly 寡头
　　 A market structure in which only a few sellers offer similar or identical products
　　 Open economy 开放经济
　　 An economy that interacts freely with other economies around the world
　　 Open-market operations 公开市场活动
　　 The purchase and sale of United States government bonds by the Fed
　　 Opportunity cost 机会成本
　　 Whatever must be given up to obtain some item
　　 Okun’s law 奥肯定律
　　 the observation that as the economy pulls out of a recession, output increases more than proportionately to increases in employment
　　 opportunity sets 机会集合
　　 a summary of the choices available to individuals, as defined by budget constraints and time constraints
　　 output per capita 人均产量
　　 a nation’s output divided by the number of individuals in the country
　　 outputs 产量
　　 the outcomes of a production process
　　 overhead costs 管理费用
　　 the costs a firm must pay just to remain in operation. They do not depend on the scale of production 考试＊大编辑整理来源:考试大-MBA考试

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