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试分别判断比较器类型,并求出图(a)、(b)所示各电路的电压传输特性。 当 对应的uI值就是阈值, 即 当uO=UOL时得上阈值: 当uO=UOH时得下阈值: 在常温下,硅二极管的门槛电压约为 0.5V,导通后在较大电流下的正向压降约为 0.7V;锗二极管的门槛电压约为 ____V,导通后在较大电流下的正向压降约为____V。
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【简答题】What shouldn’t an ad be? a. It is not creative for the sake of 1 . b. It is not designed to please 2 , art directors, agency presidents, or even 3 . c. Its main purpose is not to 4 , or win 5 . 2. Wha...
【简答题】( 153 )10=(______)16
【简答题】Watch a video clip and answer : 1. Why is “ Girl with a Pearl Earring ” referred to a the “ Dutch Mona Lisa ” ? 2. What is a tronie? 3. What type of character is the girl in the painting? Why? 4. In w...
【单选题】Is this sentence correct? "What the he'll just happened?" Yes, it is correct. No, it is incorrect. He'll is a contraction that means he will. There is no apostrophe in the word hell .
A.
Yes, it is correct.
B.
No, it is incorrect.
【单选题】What a it is that you haven’t read his book before.
A.
happy
B.
trouble
C.
shame
D.
smile
【简答题】竖式计算． 28×153= 592÷16= 305×34= 775÷25= 406×70= 960÷12=
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