下列各组物质中,不是按下图所示(“→”表示一步完成)关系相互转化的是( )
选项 |
a |
b |
c |
A |
Fe |
FeCl3 |
FeCl2 |
B |
Cl2 |
NaClO |
NaCl |
C |
Si |
SiO2 |
H2SiO3 |
D |
HNO3 |
NO |
NO2 |
在一定温度下,反应
的平衡常数为10。若将1.0
的
通入体积为1.0
的密闭容器中,在该温度时
的最大分解率接近于
A. | 5% | B. | 17% | C. | 25% | D. | 33% |
Now that we’ve discussed our problem, are people happy with the decisions _______?
A.taking | B.take | C.taken | D.to take |
Everybody was touched _____ words after they heard her moving story.
A.beyond | B.without | C.of | D.in |
One of the most important questions they had to consider was _____ of public health.
A.what | B.this ![]() |
C.that | D.which |
Encourage your children to try new things, but try not to ___ them too hard.
A.draw | B.strike | C.rush | D.push |