题目内容
以下叙述正确的是
2021-09-17
A.直肠瓣有阻止粪便的作用
B.齿线以下静脉回流至门静脉
C.直肠内括约肌为随意肌
D.肛门直肠周围间隙抗感染能力强
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='23527' and id < 2049580 and id<>'2049580' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23527' and id > 2049580 and id<>'2049580' order by id asc limit 5