电力系统有功负荷在发电机间最优分配的原则是(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id < 4498607 and id<>'4498607' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id > 4498607 and id<>'4498607' order by id asc limit 5