人体胚胎发育时间是() A.40周 B.10周 C.30周 D.20周 发布时间:2017-06-20 13:34 │ 来源:www.tikuol.com 题型:选择题 问题: 人体胚胎发育时间是( )A.40周B.10周C.30周D.20周
题型:选择题 Graduation is a good time to thank those who have helped you _____ the tough years. [ ]A. throughB. upC. with D. from 查看答案
题型:选择题 不属于β受体阻断药的是()A.噻吗心安(Timolol)B.贝特舒(Betaxolol)C.阿普可乐定(ApraclonidinE.D.适利达(Latanoprost)E.阿法根(BrimonidinE. 查看答案