变压器等值电路中，电阻Rt代表的是（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69321' and id < 4487854 and id<>'4487854' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69321' and id > 4487854 and id<>'4487854' order by id asc limit 5