题目内容
下图所示电路,S断开和闭合情况下分别为()。
2020-12-16
A.7mH.3mH
B.3mH.7mH.
C.13mH.7mH
D.7mH.13mH
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='32634' and id < 2594969 and id<>'2594969' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32634' and id > 2594969 and id<>'2594969' order by id asc limit 5