基元反应 H· + Cl2→ HCl + Cl·的反应分子数为( )。
查看答案
双分子的简单反应一定是二级反应。
A. 对
B. 错
具有简单级数的反应是基元反应。
A. 对
B. 错
Australia _________ to have been connected to South America millions of years ago.
A. is believed
B. believes
C. believed
D. is believing
The guidebook_________ for those who are going to start a business online in this country. 【2014年6月第16题】
A. is intended
B. to intend
C. intends
D. intending