题目内容
通常情况下集成运放引入负反馈后即可满足深度负反馈条件，所构成的运算电路可以利用“虚短”和“虚断”的概念求解输出与输入信号之间的运算关系。
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滞回比较器具有两个门限电压，因此当输入电压从小到大逐渐增大经过两个门限电压时，会发生两次跳变。
Task 2 Listen to the conversation and fill in the blanks with what you hear. M: Hi Diana, thanks for your help on the contract. We’re having a dinner this evening to celebrate getting the contract. .W: I have to work overtime tonight.M: That’s a pity! Maybe you could join us a little later?W: I’m really sorry. . I’m going on a business trip tomorrow and have got an early plane to catch.M: Sorry you can’t be there. ?W: Sure. Anyway, . Hope you guyshave fun!
英国的最后一个专制王朝是？
在近代欧洲被送上断头台的君主包括？
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