The method of cash flows'analysis can test the quality of accounting earnings. It provides incremental information for the investment decision of investors.

现金流量分析方法可以检验会计盈余的质量，为投资者的投资决策提供增量信息。

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Then the average annual net profit is calculated by dividing the difference between incremental revenues and costs by the estimated life of the investment.

第六条商品或者服务的市场平均价格、均差价率、均利润率以其社会平均成本为基础测定。

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Then the average annual net profit is calculated by dividing the difference between incremental revenues and costs by the estimated life of the investment.

第六条商品或者服务的市场平均价格、均差价率、均利润率以其社会平均成本为基础测定。

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