以此为基础，结合北京CBD内的实际情况对北京CBD产业集群进行了总体评价并对存在问题进行了分析。

Based on that, the article gives a general rating on the industrial cluster in Beijing CBD and the analysis of the existing problem.

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第二部分，回顾国内外企业集群理论研究的相关文献，并进行梳理、归纳和简要评价，强调一个新的视角——社会网络理论。

The second part reviews and evaluates the domestic and foreign theories on industrial clusters, emphasizing the theory of Social and Economics Networks.

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目前，高职经管类专业的案例教学在适应性、教学组织与运作体系、教学评价与管理体系、专业集群效应等方面还存在较多的问题。

Currently, it still has many problems in adaptability, teaching organization and operation system, teaching evaluation and management system and effects of specialty cluster.

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