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【单选题】
用结构来表示实体之间联系的模型称为( )。A.
关系模型
B.
层次模型
C.
网状模型
D.
记录模型
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举一反三
【单选题】公共事业的特征是什么
A.
公共性、公益性、非物质性、非营利性
B.
公共性、劳务性、非物质性、非营利性
C.
公共性、专业性、基础性性、非营利性
D.
公共性、阶级性、劳务性、非营利性
【单选题】公共事业的特征是什么?
A.
公共性、公益性、非物质性、非营利性
B.
公共性、劳务性、非物质性、非营利性
C.
公共性、公益性、发展性、非盈利性
D.
公共性、阶级性、劳务性、非营利性
【单选题】时间复杂度为O（n^2），且关键字比较次数与待排序记录的初始排列顺序无关且排序不稳定，则该排序算法是
A.
直接选择排序
B.
直接插入排序
C.
shell排序
D.
基数排序
【单选题】Two bonds have the same term to maturity. The first was issued by a state government and the probability of default is believed to be low. The other was issued by a corporation and the probability o...
A.
Because they have the same term to maturity the interest rates should be the same
B.
Because of the differences in tax treatment and credit risk, the state bond should have the higher interest rate.
C.
Because of the differences in tax treatment and credit risk, the corporate bond should have the higher interest rate.
D.
It is not possible to say if one bond has a higher interest rate than the other.
【单选题】According to the first theory, the sun and ball lightning are examples of this state of matter:
A.
solid
B.
liquid
C.
gas
D.
plasma
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