• 2021-04-14
    电路如图所示,经CP脉冲作用后,如要使得触发器的状态不变,则A、B输入应为()https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/a0e306ecfbc84cb5b5dbe152f8a4e00b.png
  • A=0,B=0
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    • 0

      电路如图所示,CP脉冲的频率为8kHZ,输出端Q的频率为( 00a0 ),具有( 00a0 )逻辑功能。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/1116e90c3c444675b2365f6e6ecf36fe.gif

    • 1

      欠阻尼二阶系统的闭环极点分布图为( )。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e26de5d73f984ba391a6ac30d8c6d4fe.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/11aa916316d34c4eb0ae8cafd3bdaeb0.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/31e7b12aeb2e427f882a4b430c6f6d94.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/aa587a3419434ed38f3114ee0eeaba96.png" />

    • 2

      电路如图5所示,运算放大器构成 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/ad0dc8cc2e8547ccb31a035a818c1d8d.png

    • 3

      下列各对函数中,两函数相同的是( ) A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/005a115bac08495eb95962c7071a78f1.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/a527471aab444488884fca1d17d9d400.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/3a0e26b4b4f44ceaa2ac479ce599077d.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/3430e6031b074123a928985c91d4bf44.png">

    • 4

      下面的式子哪一个是描述非稳态导热的第二类边界条件( )。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e5c09095c9ab4cb1a306ed310492693f.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/9f45cc2e4b664e81818435678aeb5573.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/bba03a54fa5e4b7eaacb1931ebcec58d.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/fd19c6b572144904a5c6411704e7aa1d.png">