国开题库
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Lifelong learning is non-formal.
#A.对#B.错
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IP网,即我们日常生活中常用的电话网,是一种用于全球语音通信的电路交换网络,是目前世界上最大的网络。
#A.对#B.错
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Lifelong learning is more and more important because people are now facing ___________ in changing economies.
#A.different career choices#B.various developments
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IP数据报首部的最大长度为( )字节。
#A.8字节#B.20字节#C.40字节#D.60 字节
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Lifelong learning is both formal and non-formal; and the boundaries between face-to-face teaching and ___________ education are increasingly blurred.
#A.lifelong#B.formal#C.distance
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IP地址是网络上标识站点的数字地址,为方便记忆,采用( )来代替IP地址标识站点地址。
#A.网站#B.客户端#C.域名#D.服务器
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Li Qiang is going to Beijing on Saturday.
#A.对#B.错
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IP地址可划分为( )和( )两个部分。
#A.主机号#B.网络号#C.32位#D.128位
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Li Lei is___ student in our class.
#A.tall#B.taller#C.the tallest
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IP地址可划分为( )和( )两个部分。
#A.头部#B.主体#C.主机号#D.网络号
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