高压输电线路故障，绝大部分是(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69456' and id < 4498151 and id<>'4498151' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69456' and id > 4498151 and id<>'4498151' order by id asc limit 5