題庫堂
檢索
題庫堂
首頁
數學
英文學習
政治學
統計學
經濟學
藥理學
中醫藥物學
財政學
法學知識
公共行政
警察學
BI規劃師
財務管理
公共衛生學
工程經濟學
電力電子學
當前位置:
首頁
18 如圖的放大器(其偏壓電路未示),若電晶體的轉導參數為 gm,輸出電阻為 ro,則此放大器的電壓增益約為何?(A)-gmRC (B)-gm(RC//ro) (C)-RC/RE (D)-ro/RE
問題詳情
18 如圖的放大器(其偏壓電路未示),若電晶體的轉導參數為 gm,輸出電阻為 ro,則此放大器的電壓增益約為何?
(A)-gmRC
(B)-gm(RC//ro)
(C)-RC/RE
(D)-ro/RE
參考答案
答案:C
難度:適中0.474453
統計:A(8),B(40),C(65),D(14),E(0)
用户評論
【
pianista2202
】評論
請問有詳解嗎
【
lexmvrk
】評論
還是看不懂
【
Ricky Chao
】評論
Av=-gmRc/1+gmRe約為-Rc/Re
上一篇 :
15.不等式的最大整數解為 ____________。
下一篇 :
3.她辭職的時候,才在這家公司工作了一個禮拜而已。
資訊推薦
1. 碳與矽是屬於同一族的元素,下列有關這兩種元素的氧化物的敘述,何者正確?(A)二氧化矽是一種網狀固體 (B)二氧化碳的熔點比二氧化矽的熔點高 (C)室溫時,二氧化碳與二氧化矽都是氣體(D)室溫時,
【題組】58The passage says that it is already possible to _________.(A) read a 3-D e-book (B) read a 3-D
14. Walking out of the cafeteria, I s ped on some water and hurt my foot.
7. The new manager arrived today, and I think he’s r r nice.
4.天生萬物皆有用。
21.關於游標卡尺的敘述,何者正確?(A)若主尺一格0.5mm,副尺取本尺49格分成50等分,則最小讀數為0.05mm(B)若主尺一格0.5mm,副尺取本尺24格分成25等分,則最小讀數為0.02mm
50. 下列哪一項不是情障巡迴輔導老師所需執行的必要工作?(A)採外加方式進行社會技巧教學(B)與班級老師進行合作教學(C)採抽離方式進行學科補救教學(D)與學生家長聯繫和溝通
15. These shoes are available in a wide v______y of styles, colors, and heel heights.
8. On Sunday I spent a r g day lying on the sofa and reading magazines.
5.她一生未婚,並且總穿得一身白。
22.有一圓盤離合器,內徑為8cm,外徑為12cm,若迴轉數N=628rpm,軸向壓力為2000N,μ=0.6,則所傳達之動力約為若干kW?(A)4(B)3(C)2(D)l
16. You won’t enjoy your job if you don’t get along well with your c______es.
9. I live in Taipei, but it’s not my h n; I grew up in Tainan.
II. Vocabulary:20% (每題1分)1. For those in power, show respect, but never let them rule your s l.
23.若兩嚙合齒輪之齒冠為ha,齒根為hb,則下述何者錯誤?(A)背隙為ha-hb(B)間隙為hb-ha(C)工作深度為2ha(D)全齒深為ha+hb
17. People tend to a______e Hollywood with sunshine, movie stars and rich people.
10. After you take the cake out of the oven, let it c l down by the window.
2. It was truly _________ of John to speak to others with his mouth full of food.(A)difficult (B)hea
18. They are studying the cell sample under the m______e.
3. ________ has it that the company plans to lay off 1000 workers outside the U.S.(A)Rumor (B)Legend
4.Out of _________, the little boy opened the box to see what was inside, only to find a key.(A) res
14. According to the news report, more than ten thousand people _________ in the marathon held in Ta
5. Being _________ with her poor performance, the ballet dancer burst into tears.(A)desperate (B)pro
23. You _________ the car before we hit the road. Now, our car has broken down and we are in the mid
15. _________ speaking, I don’t appreciate modern art. Some forms of it seem really bizarre to me.(A