题目内容
正常人血液缓冲系统中HC03_和H2CO,之比为
2021-10-15
A.10:1
B.15:1
C.20:1
D.25:1
E.30:1
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25791' and id < 2166443 and id<>'2166443' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25791' and id > 2166443 and id<>'2166443' order by id asc limit 5