采用模板台车进行全断面衬砌时，台车距开挖面的距离不得小于()m，台车下的净空应能保证运输车辆的顺利通行，混凝土浇筑时，必须两侧对称进行。
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It can be inferred from the text that the author______.
A. thinks people overestimate the capabilities of technology
B. is not optimistic that artificial intelligence will always be used positively
C. thinks that we should take science fiction movies more seriously
D. believes artificial intelligence is the greatest threat we face technologically
造成气候差异的最基本因素是
A. 大气环流
B. 地面状况
C. 海陆分布
D. 太阳辐射
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