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【单选题】
有关数据库系统的描述中,正确的是( )。A.
数据库系统避免了一切冗余
B.
数据库系统减少了数据冗余
C.
数据库系统与文件系统相比能管理更多的数据
D.
数据的一致性是指数据类型的一致
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【简答题】阅读理解。 Children become more generous as they get older, learning the principles of equality by the age of eight. That may not be too surprising to anyone who has kids. Humans are born with a sense of f...
【单选题】My niece has three brothers，all（ ）than she．（ ），John，is an oil worker．
A.
older：The oldest
B.
older；The eldest
C.
elder；The oldest
D.
elder；The old one
【单选题】Young adults ______ older people are more likely to prefer pop songs.
A.
other than
B.
more than
C.
less than
D.
rather than
【简答题】电源模块:缩写为( )
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