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“一事一地”原则

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What are the speakers talking about?点击开始播放听力音频mp3:{MP3:http://wximg.233.com/attached/media/20130825/20130825150367096709.mp3}听材料,回答第下面的题目。 Where did the woman say she put her glasses?

A. Maybe a picnic.
B. Maybe something new.
C. Maybe a new car.

请解释什么是减速元件?

某厂一站循环流化床点火方式是(),二站循环流化床锅炉点火方式是(),点火过程中温升速度需要(),全过程控制时间一般为()。床温达到()时可以投煤。

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