图示电路中负载获得的最大平均功率等于（）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id < 2594830 and id<>'2594830' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id > 2594830 and id<>'2594830' order by id asc limit 5