Computers and networks handle delivering the mail,so that commnucicating mail users do not have to be ________ at the same time or place.

题库:中级通信工程师 类型:最佳选择题 时间:2020-05-27 15:30:43 免费下载:《 2018年通信工程师考试中级《综合能力》真题》Word试卷

Computers and networks handle delivering the mail,so that commnucicating mail users do not have to be ________ at the same time or place.
A.present
B.parent
C.doing something
D.do something

本题关键词:C-肽,c根,C+锉,C闾,HDL-C,C肽,C超,C-苷,C波,C苷;