Consider a relation R ( A,B,C,D ) with the following dependencies:AB C, CD E, DE B.A candidate key of this relation is (). A: AB B: ABC C: ABD D: ABE
Consider a relation R ( A,B,C,D ) with the following dependencies:AB C, CD E, DE B.A candidate key of this relation is (). A: AB B: ABC C: ABD D: ABE
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
/ananas/latex/p/1802
/ananas/latex/p/1802
如图,若DE∥BC,且DE:BC=3:5,则AD:DB等于(). A: 2:3 B: 3:2 C: 3:5 D: 5:3
如图,若DE∥BC,且DE:BC=3:5,则AD:DB等于(). A: 2:3 B: 3:2 C: 3:5 D: 5:3
调用strlen("abe\0def\0g")的结果为( )。 A: 3 B: 6 C: 9 D: 10
调用strlen("abe\0def\0g")的结果为( )。 A: 3 B: 6 C: 9 D: 10
基因型DE/de的个体在减数分裂中,有6%的性母细胞在D—E之间形成交叉,那么产生的重组型配子De和dE将各占3%。(
基因型DE/de的个体在减数分裂中,有6%的性母细胞在D—E之间形成交叉,那么产生的重组型配子De和dE将各占3%。(
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。
如图,△ABC中,DE∥BC,且AD:DB=2:1,那么DE:BC= A: 2:1 B: 1:2 C: 2:3 D: 3:2
如图,△ABC中,DE∥BC,且AD:DB=2:1,那么DE:BC= A: 2:1 B: 1:2 C: 2:3 D: 3:2
If Sarah hadn’t come to the cabin, () A: Abe’s father wouldn’t have told him not to go to school B: Abe wouldn’t have helped his father on the farm C: Abe wouldn’t have had so much time to read D: Abe’s father wouldn’t have told him to stop reading
If Sarah hadn’t come to the cabin, () A: Abe’s father wouldn’t have told him not to go to school B: Abe wouldn’t have helped his father on the farm C: Abe wouldn’t have had so much time to read D: Abe’s father wouldn’t have told him to stop reading
字符串”abe\M01”的长度为
字符串”abe\M01”的长度为