With entering into the time of knowledge economy, "knowledge" replaces land, labor, capital and becomes the most important production factor and the source of competitive advantage.

进入知识经济时代，“知识”取代土地、劳动、资本等成为最重要的生产因素，知识已经成为企业竞争优势的源泉。

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For means of environmental cost assessment, market assessment is first, at the same time, obtaining assessment information, capital and time are main factor.

在环境代价评估方法的选择上，基于市场评估的方法应首先考虑，但方法的选择还受评估信息的可获得性、经费、时间等条件的约束。

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