低钾血症的血清钾浓度低于（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28448' and id < 2323703 and id<>'2323703' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28448' and id > 2323703 and id<>'2323703' order by id asc limit 5