设线路的零序补偿系数为0.5，则该线路正序阻抗与零序阻抗的比值为（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69377' and id < 4491331 and id<>'4491331' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69377' and id > 4491331 and id<>'4491331' order by id asc limit 5