图示电路中，支路电流I1为（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/3f9ea37cd3064113937d2aaefe0d2745.jpg
举一反三
- 已知串联支路为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/65b91bc067d14873a38d0c4675b53329.png"/> ， ，则其传递函数为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/8bc361d7b437451dac5c0c42c3213311.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/7db9751653e24eba9f152b6937c8c256.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a4b7ab7e122b40068ce6b78635486bae.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a6b34e5a8a764d5c9b78c725d7b77ed4.png"/>
- 图示电路中，等效电阻R0为（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/c9da5b4ba58f4837a77d6dc3cda0939f.jpg
- 下图中关于明度的 9 个等级中 1 、 2 、 3 为（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a89a6ddc703c4d198610a24e959743ba.png
- 已知<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/43114282e941476ba93775909fb3f237.png"/>，用拉氏变换法求解微分方程<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/0db291610cb64fa8ad46ae0bd15476b0.png"/> 的结果为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/29ff68f02bdd438bb2e16c2a6e1ec18b.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/0010c1593c9145a4b928548ab38cf426.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/1f562f2536584121b53c30e4db08df88.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/f593399cb630435192baa8b3e871b533.png"/>
- 图示电路中， VD3断路后将会()。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/d900187af7f74b3aa3954eb949e79fae.jpg