电力系统无功电源最优分布的原则是(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id < 4498459 and id<>'4498459' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id > 4498459 and id<>'4498459' order by id asc limit 5