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【单选题】
IP地址是一串很难记忆的数字,于是人们开发了( ),该系统给主机赋予一个用字母代表的名字.并负责IP地址与名字之间的转换.
A.
DNS域名系统
B.
UNIX系统
C.
WINDOWS NT系统
D.
MAC地址系统
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举一反三
【单选题】Reading without stop is a ______ piece of work.
A.
tire
B.
tired
C.
tiresome
D.
troubled
【单选题】__ is over 1000. [     ]
A.
A number of workers
B.
The number of workers
C.
A number
【单选题】美术教育与其他艺术教育有很大差别,其本质差别是( )
A.
时间艺术
B.
听觉艺术
C.
视觉艺术
D.
表演艺术
【判断题】6船速等同于航速。
A.
正确
B.
错误
【多选题】来源于桔梗科的生药有( )
A.
桔梗
B.
党参
C.
南沙参
D.
木香
E.
丹参
【单选题】_____, they went home, _____. [     ]
A.
Their work had been finished; singing and laughing
B.
They had finished their work; sang and laughed
C.
Their work finished; singing and laughing
D.
After their work finished; singing and laughing
【单选题】()students are playing on the ground.
A.
The number of
B.
A number of
C.
A number
【单选题】13 直流负反馈是指 。
A.
直接耦合放大电路中所引入的负反馈
B.
放大直流信号时才有的负反馈
C.
在直流通路中的负反馈
D.
只存在于阻容耦合电路中的负反馈
【单选题】患子宫颈癌且有大量米汤样或恶臭脓样阴道排液者,可用擦洗阴道的溶液是
A.
1:2 000高锰酸钾
B.
新洁尔灭(苯扎溴铵)
C.
氯己定(洗必泰)
D.
1:5 000高锰酸钾
E.
1:3 000高锰酸钾
【单选题】听力原文: A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of news from local crime to international politics, from sport to business an...
A.
Wide coverage of events.
B.
Quick speed of production.
C.
Immediacy of reporting.
D.
Focus on local events.
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