计算机网络层次结构模型和各层协议的集合叫做计算机网络【 】。
参考答案:体系结构
解析:我们将计算机网络层次结构模型和各层协议的集合定义为计算机网络体系结构。
阅读短文根据其内容,在空白处填上合适的词,使短文意思完整。
Do you know the song Super Star? Do you know the 1 SHE? "S" is 2 Selina, "H" is for Hebe and "E" is for
Ella. The singers are 3 Taiwan. Their Chinese names are Ren Jiaxuan (Selina), Tian Fuzhen (Hebe) and Chen Jiahua
(Ella). Their songs are 4 by boys and girls. When you walk in the street, you can hear someone 5 their songs.
Selina likes rabbits, but 6 big dogs. Hebe likes dogs and elephants 7 doesn't like cats. Ella likes cat's and dogs,
but hates geckos(壁虎).The three girls are working 8 .They want to sing the 9 song for their fans. Here let's 10
them good luck.
1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____
心上型肺静脉畸形引流X线平片的特有征象是
A.右上纵隔影增宽
B.右心房室增大
C.心房双重影
D.全心增大
E.心影"雪人征"