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更多“【强调：要求先标注瞬时极性，再进行简要分析】 试判别图示电路…”相关的问题
其一，判别的顺序一般按照先直流后交流，先全局后局部的原则。
其二，三极管三个极的瞬时极性借助图8-64(a-1)说明如下：
①分别说明两个电路中反馈的极性和组态;
②分别说明上述反馈在电路中的作用;
③假设两个电路中均为输入端电阻R1=1kΩ，反馈电阻RF=10kΩ，分别估算两个电路的闭环电压放大倍数各等于多少。
Practice reading the following passage. (提交该文章朗读的录音) You have inspired and touched me with the stories of the joys and sorrows that make up the fabric of our lives. And you have humbled me with your commitment to our country. Eighteen million of you, from all walks of life...women and men, young and old, Latino and Asian, African-American and Caucasian... rich, poor, and middle-class, gay and straight, you have stood with me. And I will continue to stand strong with you every time, every place, in every way that I can. The dreams we share are worth fighting for.
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（1）请说明以上电路的反馈组态和极性 （2）如果是负反馈，请确定在深度反馈条件下的电压增益。
