肺泡表面活性物质的作用有（      ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25939' and id < 2179585 and id<>'2179585' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25939' and id > 2179585 and id<>'2179585' order by id asc limit 5