白炽灯变黑是因为（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27099' and id < 2247106 and id<>'2247106' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27099' and id > 2247106 and id<>'2247106' order by id asc limit 5