【判断题】使用催化剂可以提高化学反应的平衡转化率。
【多选题】关于催化剂的性质,下列说法不正确的是
A.
对于一化学反应,催化剂可以提高反应物的转化率
D.
对于多个竞争反应,催化剂可以改变反应产物的选择性。
【单选题】Here are some f or Kids to learn numbers.(卡片)
【简答题】Between 2000 and 2001 both countries had similar numbers of employees, but by 2002 numbers in England had fallen to half as many as in Germany.
【单选题】下列反映了实现自我效能的重要性的电影是()。