在pH 2〜6条件下易发生差向异构化的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30787' and id < 2479332 and id<>'2479332' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30787' and id > 2479332 and id<>'2479332' order by id asc limit 5