以下图片中的回路被称为几阶回路？http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/532cc89131e8436c8303c27d2b018e4c.png
举一反三
- 以下图片中一共有几个反馈回路？http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/add96fc6fd524c82bd9af9fe38141878.png
- 以下哪些图片可表示马太效应？ A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/9f53557496f648f294946ddeee28f835.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/fd1d1c8153324ff58fec7e98aafa4765.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/998d04a09cb545d1aa9cd734208a020f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/c67cb20670694e0ea0e3e63a3d083975.png" />
- 根据图片所示回路，变量方程正确的有（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/054090fb88bc428d8dd568f33e018fb9.png
- 下图中回路是负反馈。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/e61f41bf66fd4d889013b885ac2af2c8.jpg
- 下图中回路是正反馈。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201810/f21129eeea85491a9a5f116e5876a0fc.jpg