This article is about study on theory and practice demonstration of differentiated power-supply service.

本论文是关于供电差异化服务理论与实证的研究。

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Therefore, the study on the management of Olympic volunteers is significant to the theory and practice.

因此，对奥运会志愿者管理的研究具有重要的理论意义与现实意义。

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Theory study must be based on practice and service for practice.

理论研究工作必须立足于实践，并为实践服务。

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