电路如下所示，求电流源功率为（   ）。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69454' and id < 4497925 and id<>'4497925' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69454' and id > 4497925 and id<>'4497925' order by id asc limit 5