The different theme of criterion involves three different aspects on knowledge and practice: channels of inspection, objective criterion and subjective criterion, and subjects of inspection.

标准问题的不同主题讲的是认识和实践问题的三个不同方面：检验的途径及客观标准、主观标准和检验的主体。

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To get the most from the practice exercises in this series, you should have a basic knowledge of Linux and a working Linux system on which you can practice the exercises covered in this article.

要充分利用本系列中的练习，则应该具备Linux系统方面的基本知识，以及一个可正常运行的Linux系统，您可以在该系统上练习本文所涉及的练习。

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To get the most from exercises in this series, you should have a basic knowledge of Linux and a working RPM-based Linux system on which you can practice the exercises covered in this article.

要从本系列中的练习获得更多的收益，您应当具有Linux系统的基本知识以及一个可正常工作的基于RPM的Linux系统，便于在该系统上实践文中所介绍的练习。

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This report is launched together with a partner UNESCO publication entitled Protecting Education from Attack: A State-of-the-Art Review, in which several experts assess current knowledge and practice on preventing and responding to such attacks.

UNESCO: Education Under Attack: UNESCO launches new report

The two day consultation featured discussion on journalism curricula, teaching resources, assessment systems, external links and recognition and coherent institutional development plans, providing stakeholders with an informed platform on which to initiate partnerships, best practice and knowledge exchange initiatives.

UNESCO: Communication and Information

This practice is thus based entirely on indigenous knowledge and informal experimentation.

UNESCO: Title