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What are the components of a task? ( ) A. A purpose B. A context C. A process D. A product

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Which of the following are typical components of a research paper?

A．Method
B．Results
C．Literature Review
D．Discussion

多项选择题

查询考试成绩在80~90之间的查询语句正确的是: A.
select * from sc where score between 80 and 90 B.
select * from sc where score>=80 and score<=90 C.
select * from sc where score90 D.
select * from sc where score not between 80 and 90