单项选择题

；A collection of related information，organized for easy retrieval．

A．Data
B．Database
C．Buffer
D．Stack
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单项选择题
下列IP地址中，合法的是 。
A．222.18.32.256
B．202,202,22,31
C．221.221.221.221
D．110.110.110
单项选择题
Computer is a complex consisting of two or more connected computing units，it is used for the purpose of data communication and resource sharing．
A．storage
B．device
C．network
D．processor
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