《花犯》:“春思远,谁叹赏国香风味?”的作者是()。
参考答案:周密
— My father _____ Shanghai with my grandparents.
— Really? _____ will they come back? [ ]
A. has been to; How soon
B. has gone to; How soon
C. has been to; How long
D. has gone to; How long
通过常规管理足以保证其安全性、有效性的医疗器械属
A.第一类B.第二类C.第三类D.基本质量特征E.质量保证