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【单选题】
基于区块链技术的英格码系统（Enigma），在不访问原始数据情况下运算数据，可以对数据的私密性进行保护，杜绝数据共享中的信息安全问题。这体现了区块链对大数据的作用是（）。A.
区块链保证大数据数据保密性
B.
区块链保证大数据数据多样性
C.
区块链保证大数据数据完整性
D.
区块链保证大数据数据专业性
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举一反三
【简答题】A．When you just have a raise in salary. B．When you have found a better job. C．When you are the only one to leave. D．When you are asked to resign.
【单选题】When should a letter be considered obligatory?
A.
When you make friends.
B.
When you receive a gift.
C.
When you want to visit your friends.
D.
When you haven't answered a letter for a long time.
【简答题】A．When you are applying for a job. B．When you are paying your tuition fee. C．When you are riding a bus. D．When you are interviewing candidates.
【简答题】阅读下面短文，并根据所读内容在文章后表格中的空格里填上恰当的单词。 注意：每个空格只填一个单词。 When you are in a place where you are hunting for a new job or a career, you will find that there are several things that you should pay attention to. ...
【单选题】When should a letter be considered obligatory?
A.
When you make a good friend.
B.
When you receive a gift.
C.
When you want to visit your friends.
D.
When you haven't answered a letter for a long time.
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