骨盆下口：由尾骨尖、骶结节韧带、坐骨结节、坐骨支、耻骨支和耻骨联合下缘围成，呈菱形。（）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31089' and id < 2499328 and id<>'2499328' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31089' and id > 2499328 and id<>'2499328' order by id asc limit 5