题目内容
某一有源二端线性网络如左图所示,已知:US1=1V,IS1=2A。该网络的戴维宁等效电压源如右图所示,其中US值为( )。
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69473' and id < 4501217 and id<>'4501217' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69473' and id > 4501217 and id<>'4501217' order by id asc limit 5