前列腺素能诱发宫缩，促使宫颈成熟，对分娩发动起主导作用（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25957' and id < 2177070 and id<>'2177070' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25957' and id > 2177070 and id<>'2177070' order by id asc limit 5