各证券交易所普遍采用（）机制为第一优先交易机制。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30016' and id < 2431491 and id<>'2431491' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30016' and id > 2431491 and id<>'2431491' order by id asc limit 5