下图所示电路，其诺顿等效电路如图（b）所示，电路元件参数为（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69307' and id < 4487244 and id<>'4487244' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69307' and id > 4487244 and id<>'4487244' order by id asc limit 5