电路如图4.14所示，试写出uo与ui的运算关系。

A . -0.5 B . 0.5 C . 1 D . -1

A .https://assets.asklib.com/psource/2015110110040637807.jpg B .https://assets.asklib.com/psource/2015110110042011959.jpg C .https://assets.asklib.com/psource/2015110110045042416.jpg D .https://assets.asklib.com/psource/2015110110043822770.jpg

A .https://assets.asklib.com/psource/2015110110321023485.jpg B .https://assets.asklib.com/psource/2015110110322177199.jpg C .https://assets.asklib.com/psource/2015110110324894811.jpg D .https://assets.asklib.com/psource/2015110110330118892.jpg

A .https://assets.asklib.com/psource/2015103016374077578.jpg B .https://assets.asklib.com/psource/2015103016374077578.jpg C .https://assets.asklib.com/psource/2015103016374077578.jpg D .https://assets.asklib.com/psource/2015103016374077578.jpg

A . A B . B C . C D . D

A . 相同 B . 相反 C . 相差π／2 D . 无法判断

A .https://assets.asklib.com/psource/2015110111455834690.jpg B .https://assets.asklib.com/psource/2015110111461391701.jpg C .https://assets.asklib.com/psource/2015110111462732051.jpg D .https://assets.asklib.com/psource/2015110111464286740.jpg

A .https://assets.asklib.com/psource/2015110110224381410.jpg B .https://assets.asklib.com/psource/2015110110225578861.jpg C .https://assets.asklib.com/psource/2015110110231370645.jpg D .https://assets.asklib.com/psource/2015110110232528824.jpg

A . A B . B C . C D . D

A . 零 B . + C . - D . 无穷大

<span class="qb-content" data-gradeid="0" data-courseid="4">理想运算放大器,电路如图所示,R1=10kΩ,R2=20kΩ,RF=100kΩ,uI1=0.2V,uI2=-0.5V,求输出电压uO.</span> <span class="qb-content" data-gradeid="0" data-courseid="4"><img src='https://img2.soutiyun.com/ask/uploadfile/5448001-5451000/cd129167d42eaad0613c5c335515dd99.png' /></span>

<img src='https://img2.soutiyun.com/shangxueba/ask/4455001-4458000/4455766/ct_jggysbnjxj_jggysbnjxchoose_0443(106).jpg' /> A．1.5V B．-0.7V C．-15.6mV D．7.5mV

已知某共射放大电路的波特图如图P5.3所示,试写出<img src='https://img2.soutiyun.com/ask/2021-01-09/979041595814278.png' />的表达式. <img src='https://img2.soutiyun.com/ask/2021-01-09/979041631071295.png' />

<img src='https://img2.soutiyun.com/ask/2020-07-01/9624592430129.jpg' />

如图所示电路中，输出电压U。与输入电压Ui1,Ui2的关系式为()。 <img src='https://img2.soutiyun.com/ask/uploadfile/5985001-5988000/cfadc566a8cfabd9c86aca69280248e8.jpg' /> A.<img src='https://img2.soutiyun.com/ask/uploadfile/5985001-5988000/6d645af1a0458b8cbcb9f3bd19cd7ea8.jpg' /> B.<img src='https://img2.soutiyun.com/ask/uploadfile/5985001-5988000/335710662224a9524791b5869b19ccd3.jpg' /> C.<img src='https://img2.soutiyun.com/ask/uploadfile/5985001-5988000/c09ffef8651c3bfc2d1a549388acd535.jpg' /> D.<img src='https://img2.soutiyun.com/ask/uploadfile/5985001-5988000/e482d9a546606b704045b155045deec5.jpg' />

<img src='https://img2.soutiyun.com/shangxueba/ask/18240001-18243000/18240162/2017032216131427523.png' />

<img src='https://img2.soutiyun.com/ask/2020-06-29/96227380449508.jpg' />

<img src='https://img2.soutiyun.com/ask/2020-11-15/974324472017723.png' />

<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110315234892.jpg' /> A．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110321023485.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110322177199.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110324894811.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110330118892.jpg' />

<img src='https://img2.soutiyun.com/ask/2020-06-30/962361270326825.png' />

A．两者反相，输出电压大于输出电压 B．两者同相，输出电压近似等于输入电压 C．两者相位差90&deg; ，且大小相等 D．两者相位差90&deg; ，且大小不等