正常人动脉血液的pH为（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31090' and id < 2499912 and id<>'2499912' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31090' and id > 2499912 and id<>'2499912' order by id asc limit 5