下图所示电賂的戴维南等效电路参数和为（）。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32630' and id < 2594673 and id<>'2594673' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32630' and id > 2594673 and id<>'2594673' order by id asc limit 5