【单选题】【消耗次数:1】
基本放大电路中的主要放大对象是______。
直流信号
交流信号
交直流信号均有
集电级电路
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相关题目
【判断题】 差分式放大电路能放大直流和交流信号,它对差模信号具有放大能力,它对共模信号具有抑制能力。
①  正确
②  错误
【判断题】 由于放大的对象是变化量,所以当输入信号为直流信号时,任何放大电路的输出都毫无变化。()
①  正确
②  错误
【单选题】 基本放大电路中,经过晶体管的信号有______。
①  直流成分
②  交流成分
③  交直流成分均有
④  集电级电路
【单选题】 放大电路中的交流通路为被放大信号提供了( )
①  静态工作点
②  输入通道
③  输出通道
④  输入、输出通道
【单选题】 从发射极输出信号的放大电路叫( )放大电路。
①  共射
②  共基
③  共集
【判断题】 差分放大电路能够放大共模信号。
①  正确
②  错误
【判断题】 阻容耦合多级放大电路各级的Q点相互独立,它只能放大交流信号。()
①  正确
②  错误
【单选题】 放大电路的主要任务是把微弱的电信号放大成幅度足够大的输出信号。
① 
② 
【单选题】 差动放大电路中,所谓差模信号是指两个输入信号电压()。
①  大小相等,极性相同
②  大小不等,极性相同
③  大小相等,极性相反
【判断题】 差分放大电路能够抑制差模信号。
①  正确
②  错误
随机题目
【单选题】 Can I borrow your camera for a couple of days?
①  Yes, you may borrow
②  Yes, go on
③  Sure, here you are. Enjoy your journey
④  It doesn’t matter
【单选题】 Hardly ever _________ get a good job these days without a good education.
①  people might
②  people can
③  do people
④  have people
【单选题】 Dieters should try to reach and __________ a reasonable weight.
①  contain
②  secure
③  reserve
④  maintain
【单选题】 He said he would continue a support us we didn’t break the rules.
①  as well as
②  as soon as
③  as far as
④  as long as
【单选题】 Congratulations! You won the first prize in today’s speech contest.
①  Yes, I beat the others
②  No, no, I didn’t do it well
③  Thank you
④  Dont mention it.
【单选题】 Children learn best by studying at their own __________ .
①  rate
②  speed
③  pace
④  growth
【单选题】 How about going to the cinema tonight, Jane?
①  I don’t think so
②  I’m sorry. I have to drive my mother home tonight
③  Never mind
④  Take it easy
【单选题】 Would you like to go fishing with us now?
①  No, I don’t like
②  It sounds interesting but I have lots of homework to do
③  I won’t tell you
④  Oh, it is well
【单选题】 They claim that __________ 1,000 factories closed down during economic crisis.
①  sufficiently
②  approximately
③  considerably
④  properly
【单选题】 Hello, I’d like to speak to Mark, please.
①  Yes, I’m Mark
②  This is Mark speaking
③  It’s me here
④  This is me