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【多选题】
数据清洗(Data cleaning)是对数据进行重新审查和校验的过程,目的在于删除重复信息、纠正存在的错误,并提供数据一致性。其主要处理类型有()。
A.
错误数据
B.
残缺数据
C.
重复数据
D.
多余数据
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参考答案:
举一反三
【单选题】She had the look of someone deserted and _____.
A.
moved
B.
ashamed
C.
delighted
D.
betrayed
【简答题】呋塞米和多巴胺联合硝酸甘油治疗冠心病心肌梗死临床效果观察
【单选题】Those wanting to charter the airplane for an aerobatic flight should absolutely make a reservation at least one month in_____.
A.
advertisement
B.
advance
C.
advantage
D.
adventure
【简答题】Look! Someone ____(dance).
【简答题】Look! Someone ____(dance).
【简答题】在园林植物上常见的蓟马类害虫有:[ ]、[ ]、[ ]和[ ]等。
【多选题】To look someone directly in the eye is rude in
A.
America.
B.
Japan.
C.
Britain.
D.
China.
【单选题】'Before the operation, I would look at someone and all I could see for their face was jelly,' says Jonathan Wyatt 'Now, I can see peoples faces.' The 65-year-old is one of six people in the world to r...
A.
common
B.
ambiguous
C.
rare
D.
simple
【单选题】奥运五环象征着五大洲的团结,蓝色环则代表()
A.
欧洲
B.
亚洲
C.
美洲
D.
大洋洲
【单选题】The first suggestion given in the passage is that you should_______.
A.
learn to write a resume soon after your enter the university
B.
try your best to achieve excellent results at university
C.
write your resume during all the years at university
D.
fully enjoy the four years of your university life
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