ISBL是()
A.标准数据查询语言
B. 关系代数语言
C. 元组关系演算语言
D. 域关系演算语言
A.标准数据查询语言
B. 关系代数语言
C. 元组关系演算语言
D. 域关系演算语言
第2题
A.life is not enjoyable since each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life
第3题
A.life is not enjoyable since, each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life
第4题
A.life is not enjoyable since each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life
第5题
A.life is not enjoyable since each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life
第6题
A.life is not enjoyable since each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life
第7题
A.the miserable life of Native American Indians
B.the loss of the frontier, a simpler time
C.the impact of the frontier on American values
D.the dark side of the settling of the frontier
第8题
A.Breastfeeding is not advisable because it is not good for a mom to keep a good shape.
B.Breastfeeding can greatly reduce a mother's chances of getting all kinds of serious disease.
C.Breastfeeding for a month is highly recommended: the longer, the better.
D.Breastfeeding for a month or longer makes babies smarter.
第10题
A.that
B.which
C.it
D.of which
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