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【单选题】
将接口eth0 的ip 地址设置为172.19.18.15,子网掩码255.255.255.0 ,如下哪个命令可以达成?A.
ipconfig eth0 172.19.18.15/255.255.255.0
B.
ifconfig eth0 172.19.18.15 netmask 255.255.255.0
C.
ipconfig eth0 172.19.18.15 255.255.255.0
D.
ifconfig eth0 172.19.18.15/24
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反馈参考答案：
举一反三
【单选题】Recorded background music first found its way into factories, shops and restaurants in the States. But it soon spread to other parts of the world. Now it is becoming increasingly difficult to go shopp...
A.
Background music is only used in the States.
B.
Background music is used all over the world except the States.
C.
Most shops and restaurants use background music now.
D.
It is very difficult to listen to background music.
【简答题】The first music in the American colonies was _____ music.
【单选题】At first country music was popular mainly in the ______.
A.
South
B.
Northeast and West
C.
factories in Midwest
D.
South and Northeast
【单选题】_______I came to the music hall ,it was a new and grand one .
A.
Firstly
B.
For the first time
C.
The first time
D.
First time
【单选题】如下图，一名管理员ping默认网关发现如下输出，最有可能是那一层OSI出问题？（）
A.
data link layer
B.
application layer
C.
access layer
D.
session layer
E.
network layer
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