电源的两种电路模型如图所示，其中满足的条件主要有（）。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id < 2598747 and id<>'2598747' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id > 2598747 and id<>'2598747' order by id asc limit 5