1_____education is the instruction that occurs when the instructor and students are separated by distance or time,or both

计算机接入局域网需要配备____。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

把一台普通的计算机变成多媒体计算机，要解决的关键技术不包括______。

要把一台普通的计算机变成多媒体计算机，要解决的关键技术不包括______。

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

多媒体通信的网络技术包括宽带网络技术以及接入技术。

多媒体通信的网络技术包括宽事网络技术以及接入网技术。

多媒体通信的网络技术包括宽带网络技术以及接入网技术。

通过______接入因特网是一个部门或单位的计算机接入因特网常用的方法。