为患者吸痰时，为防止加重缺氧，每次抽吸的时间为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30775' and id < 2477901 and id<>'2477901' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30775' and id > 2477901 and id<>'2477901' order by id asc limit 5