某弱減性药物pKa=8.4，在血装中（血浆pH=7.4）其解离度约为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30289' and id < 2449147 and id<>'2449147' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30289' and id > 2449147 and id<>'2449147' order by id asc limit 5