For the abrupt PN junction, when the reverse voltage is enough large, and Vbi can be omitted, the barrier capacitance is inversely proportional to ( ).
A: [img=40x28]1803a28c3365ce5.png[/img]
B: [img=21x25]1803a28c3d86a72.png[/img]
C: [img=28x27]1803a28c463bf40.png[/img]
D: [img=40x28]1803a28c4eab9b1.png[/img]
A: [img=40x28]1803a28c3365ce5.png[/img]
B: [img=21x25]1803a28c3d86a72.png[/img]
C: [img=28x27]1803a28c463bf40.png[/img]
D: [img=40x28]1803a28c4eab9b1.png[/img]
举一反三
- For the abrupt PN junction, when the reverse voltage is enough large, and Vbi can be omitted, the barrier capacitance is inversely proportional to ( ). 未知类型：{'options': ['', '| V |', '', ''], 'type': 102}
- 电路如图28所示，a、b端的等效电阻等于（ ）。[img=304x215]1803e02a7d1cc76.png[/img] A: 1Ω B: 2Ω C: 3Ω D: 40Ω
- 设随机变量X,Y相互独立,且[img=167x27]17da6334a00d255.png[/img],[img=85x19]17da6334b1f3f8e.png[/img],则[img=55x27]17da6334bb9ebfa.png[/img]( ). A: 8 B: 16 C: 28 D: 44
- 已知D(X) = 2，D(Y) = 1，X和Y的相关系数[img=109x29]180357352f85f5d.png[/img].则D(2X+Y+1) = . A: 19/3 B: 23/3 C: 28/3 D: 31/3
- 随机变量X与Y相互独立，那么相关系数[img=40x28]1803b3be7206c89.png[/img]成立的是 A: [img=40x28]1803b3be7a47c28.png[/img]=0 B: [img=40x28]1803b3be7a47c28.png[/img]>0 C: [img=40x28]1803b3be7a47c28.png[/img]<0 D: [img=40x28]1803b3be7a47c28.png[/img]≠0