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【多选题】
已知某基本共射放大电路的输出特性曲线如图所示，请问： 1. 静态工作点Q1对应的电源Ucc是 （V） ？ 2.静态工作点Q1的参数I B 是多大 （ μA ）？ 3.静态工作点Q1的参数I C 是多大 （mA） ？ 4.静态工作点Q1的参数U CEQ 是多大 （V）?A.
12
B.
20
C.
2
D.
6
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