肺脓肿患者痰量多时，痰可出现分层现象，下层为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31468' and id < 2521741 and id<>'2521741' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31468' and id > 2521741 and id<>'2521741' order by id asc limit 5