电力系统等值电路中，所有参数应为归算到同一电压等级(基本级)的参数，关于基本级的选择，下述说法中正确的是(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id < 4498436 and id<>'4498436' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id > 4498436 and id<>'4498436' order by id asc limit 5