The text is analyzing present state of electricity vocation , dissecting rootstock and manifestation of monopoly of electricity vocation , and finding cause of electricity vocation superprofit producing from analysed costs and profit and income rate 本文从分析电力行业现状着手，剖析电力行业垄断的根源、表现形式，并从成本、利润、收益率上分析电力行业超额利润产生的原因。
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