大咯血是指24小时咯血量超过（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id < 2485920 and id<>'2485920' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id > 2485920 and id<>'2485920' order by id asc limit 5