下列属于中效消毒剂的是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31063' and id < 2498500 and id<>'2498500' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31063' and id > 2498500 and id<>'2498500' order by id asc limit 5