For the cycle commencing in 2009, all judges must participate in an intercontinental or international course and must take the theory and practical examinations.

本周期开始年2009年，所有裁判员必须参加洲际和国际裁判员学习班，必须参加学习班的理论与实践考试。

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Study on economic cycle is of great importance in the field of economic theory. In particular, in modern times, it has deeply practical significance under the background of economic crisis.

对经济周期问题的研究一直是经济学理论研究的重点，特别是在当前经济危机的时代背景下就更有深层次的现实意义。

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Finally, the plan of project management of exhibition design based on life cycle theory was stressed which combined with practical example.

最后，结合具体实例，重点阐述了基于生命周期的展品设计项目管理方案。

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Finally, the plan of project management of exhibition design based on life cycle theory was stressed which combined with practical example.

最后，结合具体实例，重点阐述了基于生命周期的展品设计项目管理方案。

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