有关X线防护问题，以下哪项认识是错误的：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id < 2117578 and id<>'2117578' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id > 2117578 and id<>'2117578' order by id asc limit 5