图示电路级间电阻R2引入了（）反馈，该反馈属于（）反馈。https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/286a5b47522d4c78b58ab5d7c705a39a.jpeg
举一反三
- 图示电路级间引入了 反馈，该反馈属于 反馈。 【图片】
- 图示铆钉连接，铆钉的挤压应力σbs为（）。<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/b8e86bfb0fff41b7b9e57e2445615892.png"> A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/4a7f324702d744a58b593467a2b9c4b9.png"> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/b0e1da662dfc4cada52e7088274f5991.png"> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/a67f5ae9ded948448e24eae7e8714fa7.png"> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/e9a3ada35d3b477a93d360335305e00b.png">
- 按热力学分类，由α相β相为一级相变，则其相变特征是() A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c0fba5fc3fd9486e9595e057099b4fb7.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/8669999525164f51bac9ed30f5067429.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/f39ef47427164774b6f4153c6c300e10.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/15cc1ade6dae4c6ead266095b40e6809.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/7347833ef3c5413f9e506e0f48ca519e.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/f39ef47427164774b6f4153c6c300e10.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/8669999525164f51bac9ed30f5067429.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c0fba5fc3fd9486e9595e057099b4fb7.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c4736875605d471fb62de7fdb639f4ae.png" >
- 中国大学MOOC: 图示电路级间引入了 反馈，该反馈属于 反馈。 【图片】
- 图示电路级间电阻R2引入了（ ）反馈，该反馈属于（ ）反馈。[img=327x124]17869acb55005cc.jpeg[/img] A: 正，电流串联 B: 正，电流并联 C: 负，电压串联 D: 负，电压并联