举一反三
- 中国大学MOOC: 将电路化为最简形式,其中等效电压源Us=( )V。http://edu-image.nosdn.127.net/D3D448D4267D7BCDF65158A0F0BF234F.jpg?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: http://edu-image.nosdn.127.net/F8D1C10653F1025CBF0BFC99472401F5.jpg?imageView&thumbnail=890x0&quality=100图示电路中i为
- 图示电路中，Y的最简逻辑表达式为 。http://edu-image.nosdn.127.net/D5D9D60FAAD47CC94FC74AC616F3AA5B.JPG?imageView&thumbnail=520x520&quality=100
- 一阶低通和高通滤波电路的特征频率http://edu-image.nosdn.127.net/7E7F1055858242AC1846E34707EA3848.png?imageView&thumbnail=890x0&quality=100与通带截止频率http://edu-image.nosdn.127.net/5EC1781C90A066C15C4A6AFF6EF983C2.png?imageView&thumbnail=890x0&quality=100相等；而高阶低通和滤波电路的http://edu-image.nosdn.127.net/3ED720FB1F05ABA1F9079DE5B7F791B8.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/F711F7FB9E8D3C851ACAABB02F5C6EE7.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/865F0785FF3D04AFFC7A9E21B34598FD.png?imageView&thumbnail=890x0&quality=100。
- 图示电路为改进型差分放大器，其中引入VT3的目的是（ ）。http://edu-image.nosdn.127.net/728D5B61224AC6FE9FC810772F4A3CA5.png?imageView&thumbnail=890x0&quality=100
内容
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图示电路中U=12V，E=4V，I=2A电流R等于多少Ω。http://edu-image.nosdn.127.net/5D54F097DF93092B8EBBE8BA2D178C46.png?imageView&thumbnail=890x0&quality=100
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图示简支梁，弯矩等于零的x的值为（ ）。(A为坐标原点)http://edu-image.nosdn.127.net/90E799634A9127A238FCA19204D50167.png?imageView&thumbnail=890x0&quality=100
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图示简支梁，弯矩等于零的x的值为（ ）。(A为坐标原点)http://edu-image.nosdn.127.net/A21EF98B28767FBF47A708D0D401F092.PNG?imageView&thumbnail=890x0&quality=100
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中国大学MOOC: 若第9题中当电路中总电压http://edu-image.nosdn.127.net/45D53DF610EBF196EBE5238589C91ABF.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/8232D55E2C1346F746EFBB0780167F51.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/A2CC3366BF7376F66D8EFFEB40B97149.png?imageView&thumbnail=890x0&quality=100，以下叙述正确的是
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下图电路是什么类型的反馈电路（ ）http://edu-image.nosdn.127.net/11F136DD55EAE7DF5E78B5E3846DA011.png?imageView&thumbnail=890x0&quality=100