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【单选题】
若某关系 R的属性集A函数决定R中所有其它属性,则 A 为关系 R的一个A.
键
B.
主键
C.
D.
外键
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举一反三
【简答题】Why do you collect together stamps?
【单选题】---Why do you collect so many old bikes? ---I’ 11 have them ( ) and give away to the children who don ’t have bikes
A.
used up
B.
given up
C.
fixed up
D.
set up
【判断题】亚马逊平台服饰类商品命名规则:\n子商品命名规则:Brand +Department /Targer audience +Product name/Style+Size/style+Color。
A.
正确
B.
错误
【判断题】亚马逊平台服饰类商品命名规则:父商品命名规则:Brand +Department /Targer audience +Product name/Style。
A.
正确
B.
错误
【单选题】— Why do you collect so many old bikes? — I'll have them ______and give away to the children who don't have bikes.
A.
used up
B.
given up
C.
fixed up
D.
set up
【简答题】目的基因(targer gene)
【简答题】- Why do you collect so many old bikes ? - I'Il have them and give away to the children who don't have bikes .( )A. used up B. given up C. fixed up D. set up
【简答题】targer( )
【单选题】—Why do you collect so many old bikes? —I'Il have them _ and give away to the children who don't have bikes.
A.
used up
B.
given up
C.
fixed up
D.
set up
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