对幂指函数求极限的问题，提出了几种方法，尤其讨论了等价无穷小替换在幂指函数求极限过程中的可行性。并且以实例演练了理论的应用性。

Several methods about limit of power-exponent function are provided. Especially, the application of equivalent infinitesimal replacement is proved. And the theory is described by some examples.

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本文以[reinitz 1]和[reinitz 2]中介绍的技术为基础，演练了如何创建执行消息转换和和路由的ESB的实例。

This article builds on the techniques introduced in [Reinitz1] and [Reinitz2] and walks you through the creation of an instance of an ESB that implements message transformation and routing.

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对建立和完善事故应急预案的必要性，事故应急预案的编制、演练、修订及其作用进行了分析，并列举了一些应急预案应用实例。

In this paper the necessity of the emergency plan is analyzed, as well as the compilation, practice, revision and function, and some applied examples are listed.

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