题干
— Could you tell me ?
— I'm not sure. Maybe next week.
A：where shall we have a class trip
B：where we shall have a class trip
C：when shall we have a class trip
D：when we shall have a class trip
答案(点此获取答案解析）
D
2NO2 是放热反应。下图表示其他条件一定时，反应中NO的转化率与温度的关系曲线。图中标有a、b、c、d四点，其中表示未达到平衡状态，且v（正）＞v（逆）的点是
