一个绝缘子投入运行十分钟左右被击穿，基本可判断为(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69525' and id < 4504503 and id<>'4504503' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69525' and id > 4504503 and id<>'4504503' order by id asc limit 5