题目内容

在387℃时,反应2NO(g)+O2(g)→2NO2(g)的实验数据如下:

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新股发行公司在新股发行前,必须通过现场推介方式向投资者进行公司推介,也可通过因特网进行网上直播。()

We wanted a new table for dinner,so my father bought__________ froni a furniture store yesterday.

A. itself
B. one
C. himself
D. another

确定下列元反应是单分子反应、双分子反应还是三分子反应,并写出它们的速率方程。

The best title for the passage may be__________ .

A. We Can Live Longer in the 21 st Century
B. Cancer to Be Conquered in the 21 st Century
C. The Final Frontier of the 21 st Century
D. Scientific Breakthrough of the 2 1 st Century

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