单导线架空线每公里电抗大约为(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id < 4498453 and id<>'4498453' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id > 4498453 and id<>'4498453' order by id asc limit 5