肺泡气与大气之间的气体交换称为

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29015' and id < 2361015 and id<>'2361015' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29015' and id > 2361015 and id<>'2361015' order by id asc limit 5