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【简答题】
假定 雇员表 Employees 、 雇员工资表 wage 、 工资税表 tax 的关系模式 如下 : Employees ( E mployee ID int, Name char(8), Sex char(2) , Birthdate datetime , Address char(50) ,Phone char(13) ) (注: Employee ID 表示雇员号, Name 表示雇员姓名, Sex 表示性别, Birthdate 表示出生日期, Address 表示居住地址, Phone 表示联系电话 ) W age ( Employee ID int , Wage int , Putdate datetime ) (注: Employee ID 表示雇员号, W age表示工资,Putdate表示收到工资时间) T ax ( Employee ID int , Tax int,Paydate datetime ) (注: Employee ID 表示雇员号, Tax 表示交税数额, Paydate表示交税时间) 完成以下任务: 1)分别用关系代数表和SQL 语句查询出所有女雇员的姓名、居住地址信息。 2)用 SQL 语句 使用嵌套查询,查询出交税款最多的雇员代号、交税款数额、时间等信息。
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【判断题】拱涵受力较好而且美观
A.
正确
B.
错误
【单选题】Neoclassical growth theory is based on the proposition that real GDP per person grows when
A.
the population growth rate increases.
B.
the population growth rate decreases.
C.
technological advances occur.
D.
saving decreases.
【简答题】What are the answers to the following four questions?
【单选题】New growth theory proposes that real GDP per person grows because of ________ and that growth ________.
A.
the pursuit of profit; can persist indefinitely
B.
productivity shocks; can persist indefinitely
C.
technological change; can only increase above the subsistence level temporarily
D.
productivity shocks; occurs randomly
【单选题】If real GDP grows from $10 trillion in 2002 to $10.5 trillion in 2003, the growth rate for real GDP is ( )
A.
5%.
B.
10%.
C.
50%.
D.
0.5%.
【简答题】What are the answers to the long conversation?
【简答题】What are the answers to Q1-Q25?
【单选题】When the economy grows, ________ increase because real GDP ________.
A.
tax revenues; decreases
B.
tax revenues; increases
C.
structural deficits; decreases
D.
recognition lags; increases
【简答题】What are the answers to Q1-4?
【简答题】What are the answers to Q1-5?
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