【单选题】下面关于星型拓扑结构描述正确的是()
B.
特点是每个端用户都与两个相邻的端用户相连,并且数据传输具有单向性,一个端用户发出的数据中能被另一个端用户接收并转发
C.
多台机器共用一条传输信道,信道利用率较高,但是同一时刻只能由两台计算机通信
D.
结构简单,便于管理(集中式),不过每台入网主机均需要与中央处理设备互联,线路利用率低
【单选题】下面关于星型拓扑结构描述正确的是?
A.
结构简单,便于管理(集中式),不过每台入网主机均须与中央处理设备互连,线路利用率低。
C.
特点是每个端用户都与两个相邻的端用户相连,并且环形网的数据传输具有单向性,一个端用户发出的数据只能被另一个端用户接收并转发。
D.
多台机器共用一条传输信道,信道利用率较高,但是同一时刻只能由两台计算机通信
【单选题】He likes painting. He is going to be a(n) ______ when he is older. [ ]
【单选题】听力原文:M: Hi. Welcome to Heavenly Pies. May I take your order? W: Uh... yes. [23]I'd like the fried chicken steak. M: Okay. Would you like fries, bread, or rice with your meal? W: Umm. I'll take the ric...
B.
Fried chicken steak & Sprite.
C.
Boiled chicken & salad.
【单选题】听力原文:M: Hi. Lisa. Have you registered for the courses yet? W: yes, I have, Max. M: Oh, sorry, but...can you tell me...what is your major again? W: Sure. I major in computer science. M: Why did you cho...
A.
Because it is interesting and creative.
B.
Because it has a big effect on our lives.
C.
Because she can make big money with it.
D.
Because she can graduate more easily.
【单选题】下面关于星形拓扑结构描述正确的是?
B.
特点是每个端用户都与两个相临的端用户相连,并且环形网的数据传输具有单向性,一个端用户发出的数据只能被另一个端用户接收并转发。
C.
多台机器共用一条传输信道,信道利用率较高,但是同一时刻只能由两台计算机通信。
D.
结构简单,便于管理(集中式),不过每台入网主机均需与中央处理设备互连,线路利用率低;
【单选题】听力原文:M: Hi. Welcome to Heavenly Pies. May I take your order? W: Uh... yes. I'd like the fried chicken steak. M: Okay. Would you like fries, bread, or rice with your meal? W: Umm. I'll take the rice. M...
B.
Fried chicken steak & Sprite.
C.
Boiled chicken & salad.
【单选题】—Where is your father? —______in the garden. [ ]
A.
He is going go water the flowers
B.
He likes watering the flowers.
C.
He is watering the flowers.
D.
He often waters flowers.