问题
选择题
The news that Obama was elected president of the United States is not mystery.
A.the;the
B.a;/
C./;a
D.the;a
答案
答案:C
The news that Obama was elected president of the United States is not mystery.
A.the;the
B.a;/
C./;a
D.the;a
答案:C
对于可逆反应:2SO2(g)+O2(g)⇌2SO3(g)△H<0,下列研究目的和示意图相符的是( )
A | B | C | D | |
研究目的 | 压强对反应的影响 (p2>p1) | 温度对反应的影响 | 平衡体系增加O2的浓度对反应的影响 | 体积恒定的密闭容器中催化剂对反应的影响 |
图示 |
|
|
|
|
A.A
B.B
C.C
D.D