下属有关蛋白质分离技术的阐述错误的是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id < 2171231 and id<>'2171231' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id > 2171231 and id<>'2171231' order by id asc limit 5