石门穴位于:()A.前正中线上,当脐中上2寸 B.前正中线上,当脐中上4寸 C.前正 发布时间:2018-01-09 19:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 石门穴位于:()A.前正中线上,当脐中上2寸B.前正中线上,当脐中上4寸C.前正中线上,当脐中上6寸D.前正中线上,当脐中下2寸E.前正中线上,当脐中下4寸
题型:单项选择题 The postal service announced on Tuesday it has made a significant ________ in getting machines toread handwriting. [ ]A. principle B. breakthroughC. conclusion D. introduction 查看答案