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【单选题】
在SQL的Select语句中,用函数Avg能计算相关字段的_。A.
合计
B.
平均值
C.
记录个数
D.
均方差
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反馈参考答案：
举一反三
【单选题】In the passage, the writer suggests that the word 'cool'______.
A.
may not be as cool as it seems
B.
usually means something interesting
C.
can make your life colorful
D.
can be used instead of many words
【单选题】Why were gold and silver inconvenient if people had to buy something expensive?
A.
Because they were easy to steal.
B.
Because they were difficult for people to get.
C.
Because they were not easy to carry around.
D.
Because they themselves were expensive too.
【简答题】发动机若同时采用两种转换装置,通常二者放在同一外壳内,前后顺序为何?
【单选题】Why does the author say that even gold and silver were inconvenient if you had to buy some-thing expensive? 查看材料
A.
Because they are easy to steal.
B.
Because they are difficult for people to obtain.
C.
Because they are not easy to carry around.
D.
Because they themselves are expensive， too.
【简答题】gr d te (毕业生)
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