一定温度下，两个体积相等的连通容器用活塞分开，左右两室各充入一定量NO和O2，恰
题型：选择题
问题：
一定温度下，两个体积相等的连通容器用活塞分开，左右两室各充入一定量NO和O2，恰好使两容器内气体密度相同，打开活塞，充分混合反应。
下列判断正确的是(不考虑NO2转化为N2O4) ( )
A．最终容器内无O2存在
B．反应前、后左室气体压强不变
C．反应前、后右室气体密度不变
D．开始时左右两室气体分子数相同
题型：选择题
| 阅读理解。 | ||||||||||||||||
For sale
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| 1. Which is the cheapest thing for sale? | ||||||||||||||||
| A. A baby bed. B. A TV. C. A piano. D. A computer. | ||||||||||||||||
| 2. If you want to buy an exercise bike, you can call _______. | ||||||||||||||||
A. 0289-457-076 | ||||||||||||||||
| 3. If you have only $600, you can buy _______. | ||||||||||||||||
| A. an antique door and a baby bed B. a computer  and a pianoC. a TV and an antique door D. a piano and furniture |
13/453 Crown Rd Fairburn
, perfect condition,