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#50. 2
ID: 50
Type: Objective
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
jike1994
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2
2
一、单项选择题(共15题,每题2分,共计30分;每题有且仅有一个正确选项)
中国的国家顶级域名是()
A. .cn
B. .ch
C. .chn
D. .china
二进制数 11 1011 1001 0111 和 01 0110 1110 1011 进行按位与运算的结果是()。
A. 01 0010 1000 1011
B. 01 0010 1001 0011
C. 01 0010 1000 0001
D. 01 0010 1000 0011
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