若三相功率基准值为,线电压基准值为,则阻抗基准值为(  )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69510' and id < 4503153 and id<>'4503153' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69510' and id > 4503153 and id<>'4503153' order by id asc limit 5