【单选题】分时系统和实时系统都具有交互性,实时系统的交互性允许用户访问( )
【单选题】分时系统和实时系统都具有交互性,实时系统的交互性允许用户访问(1);分时系统的交互性允许用户请求系统提供(2)。 (1)
【单选题】分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供( )。
【单选题】1-25.分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供( )。
【单选题】why are new college students most likely to get addicted to the Internet
A.
Because colleges provide Internet access 24 hours a day
B.
Because they are not watched by their parents when at college
C.
Because they need to use the Internet to keep in touch with their friends
D.
Because they are so homesick that they spend all their spare time online
【单选题】分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供多方面的 服务,实时系统的交互性允许用户访问()。
【单选题】Why are new college students most likely to get addicted to the Internet?
A.
Because colleges provide Internet access 24 hours a day.
B.
Because they are not watched by their parents when at college.
C.
Because they need to use the Internet to keep in touch with their friends
D.
Because they are so homesick that they spend all their time online
【简答题】求与直线x+9y-1=0垂直的曲线y=x 3 -3x 2 +5的切线方程.
【简答题】写出下列单词的 元音音标 leave [ ]
【多选题】西班牙民风奔放热情,以( ),吉他而闻名。