下列分子中( )的偶极矩不等于0。
A: [img=38x22]18034affa829b46.png[/img]
B: [img=37x22]18034affb100454.png[/img]
C: [img=37x22]18034affb919fa0.png[/img]
D: [img=29x22]18034affc17ebe8.png[/img]
A: [img=38x22]18034affa829b46.png[/img]
B: [img=37x22]18034affb100454.png[/img]
C: [img=37x22]18034affb919fa0.png[/img]
D: [img=29x22]18034affc17ebe8.png[/img]
举一反三
- 下列分子中具有偶极矩不为0的分子是 A: [img=37x22]1802fca4b1f7733.png[/img] B: [img=32x22]1802fca4bb611ee.png[/img] C: [img=93x22]1802fca4c378955.png[/img] D: [img=91x22]1802fca4cbbffaf.png[/img]
- 下列4个集合中是空集的是() A: {x|[img=18x22]1802f060e2f728f.png[/img]+1=0} B: {x|[img=18x22]1802f060e2f728f.png[/img]<-x} C: {x|[img=18x22]1802f060e2f728f.png[/img]=0} D: {x|[img=18x22]1802f060e2f728f.png[/img]-1=0}
- 下列4个集合中是空集的是() A: {x|[img=18x22]1803d021d498831.png[/img]+1=0} B: {x|[img=18x22]1803d021d498831.png[/img]<-x} C: {x|[img=18x22]1803d021d498831.png[/img]=0} D: {x|[img=18x22]1803d021d498831.png[/img]-1=0}
- 下列4个集合中是空集的是() A: {x|[img=18x22]1803d0240bcad39.png[/img]+1=0} B: {x|[img=18x22]1803d0240bcad39.png[/img]-x} C: {x|[img=18x22]1803d0240bcad39.png[/img]=0} D: {x|[img=18x22]1803d0240bcad39.png[/img]-1=0}
- 设[img=162x19]17e0ab913cc7ca8.jpg[/img]且X,Y相互独立,则[img=84x19]17e0ab9147a14b0.jpg[/img]. A: 14 B: 22 C: 32 D: 40