皮皮学，免费搜题
登录
搜题
【多选题】
针对 E-R model ,以下叙述为真 ?A.
在 E-R model 中，最基本的规范条件：关系的每一个分量必须是一个不可分的数据项 , 允许表中还有表
B.
在 E-R model 中，表中的一列即为一个属性，给每一个属性起一个名称即属性名
C.
在 E-R model 中，域是一组具有相同数据类型的值的集合。属性的取值范围来自某个域，例如整数域。
D.
在 E-R model 中，一个关系对应通常说的一张表
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】中央银行的资产业务包括哪些内容?
【单选题】When Jim had seen the film, he ceased _________ in the novel.
A.
interested
B.
to interest
C.
interesting
D.
being interested
【单选题】Larry was so absorbed in his novel that he forgot about his dinner cooking in the oven.
A.
engrossed
B.
obliged
C.
enlivened
D.
excelled
【单选题】Which of the following descriptions about the opening chapter in the novel is incorrect?
A.
The truth of selection process is concealed by a competition for twosomes.
B.
It is implied in this chapter that Noah has an appetite for animal flesh.
C.
There was never a “natural selection” among the animals.
D.
According to the narrator, though God is benevolent, the person that he chooses to preserve is not a nice man at all.
【简答题】根据2.52÷21=0.12，直接填空． 25.2÷21= 0.0252÷21= ______÷21=12．
【单选题】Johnson was so absorbed in his novel that he forgot about his dinner cooking in the oven.
A.
obtained
B.
enlivened
C.
obliged
D.
engrossed
【简答题】75=______：12=12()=21÷______=______%0.75=______：12= 12 () =21÷______=______%
相关题目：