国民经济评价对投入物和产出物采用的是()。
A、现行价格
B、影子价格
C、浮动价格
D、实际成本
E、机会成本
参考答案:B, E
An analyst gathered the following data about a company:
The company’s return on equity:()
A. decreased because the company’s profit margin fell.
B. increased because the company’s leverage multiplier rose.
C. increased because the company’s asset turnover increased.