問題詳情

一、圖一所示理想運算放大器,R1= 20 kΩ,R2= 20 kΩ,R3= 200 Ω。


【題組】 ⑴求電流 I1、I2、I3 和電壓 Va。(8 分)

參考答案

答案:B
難度:困難0.396154
統計:A(37),B(103),C(27),D(73),E(0)

用户評論

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As they participate in interactive reading with adults, children also learn about books – author's and illustrators names, titles, tables of content, page numbers, and so forth. They also learn about book handling –how to turn pages, how to find the top and bottom on a page, how to identify the front and back cover of a book, and so forth. As part of this learning, they begin to develop the very important concept "word" – that meaning is conveyed through words; that printed words are separated by spaces; and that some words in print look longer (because they have more letters) than other wo...

暄暄】評論

(筆記,謝謝5F)As they participate in interactive reading with adults, children also learn about books – author's and illustrators names, titles, tables of content, page numbers, and so forth. They also learn about book handling –how to turn pages, how to find the top and bottom on a page, how to identify the front and back cover of a book, and so forth. As part of this learning, they begin to develop the very important concept "word" – that meaning is conveyed through words; that printed words are separated by spaces; and that some words in print look longer (because they have more letters) ...