【多选题】下列说法中不正确的是 ( )
A.
s 键的一对成键电子的电子密度分布对键轴方向呈园柱型对称 ;
B.
p 键电子云分布是对通过键轴的平面呈镜面对称
C.
s 键比 p 键活泼性高 , 易参与化学反应
【判断题】s 键比 p 键活泼性高,易参与化学反应。
【判断题】凹透镜的放大倍数是有限的,显微镜可以无限放大。( )
【简答题】A.He has trouble stopping. B.There are too many rocks. C.Going uphill is difficult. D.There are too many curves.
【判断题】p 键比 s 键活泼性高,易参与化学反应
【简答题】A.There are too many complaints from net users. B.Hackers' attack of MySpace cannot be forbidden. C.Parents cannot help checking children's information. D.It is easy for trouble-makers to do harm to c...