W: (19)However, you see, we do need exercises because we are getting lazy for keeping fit, and the health strength exercises And all of them can give the full reasons for their support. Now some doctors are strongly encouraging me to do arm exercises.
W: Arm exercises? Is that because your arms are too fat or flabby?
M: Actually, that's not the main reason. (20) They say that arm exercises are an ideal way to become physically fit.
W: But don't arm exercises raise your blood pressure?
M: They do, But the article I read mentions ways to make up for that.
M: (21)By adding leg exercises, so the arms don't do all the work. Arm exercises aren't enough. It is said that the more of the body that involves in the exercise, the better.
W: And in turn, I'm sure that there is a greater chance of losing weight.
M: Sounds right to me.
W: So. what exercises do the experts recommend?
M: They mentioned quite a few. (22)But some of the more popular ones are cycling with special bicycles that make you use both your arms and legs, and walking vigorously while you wear arm weights.
W: I must try that. I like walking.
(23)
A.It is boring to do different kinds of exercise.
B.It is quite necessary for the sake of health.
C.It is totally confused to choose the right one.
D.It is hard to follow the experts' suggestion.
第1题
如果对关系emp(eno,ename,salary)成功执行下面的SQL语句: CREATE CLUSTER INDEXname_index ON emp(salary) 对此结果的正确描述是_______。
A.在emp表上按salary升序创建了一个聚簇索引
B.在emp表上按salary降序创建了一个聚簇索引
C.在emp表上按salary升序创建了一个惟一索引
D.在emp表上按salary降序创建了一个惟一索引
第2题
如果对关系emp(eno,ename,salary)成功执行下面的SQL语句: CREATE CLUSTER INDEXname_index ON emp(salary)对此结果的正确描述是
A.在emp表上按salary升序创建了一个聚簇索引
B.在emp表上按salary降序创建了一个聚簇索引
C.在emp表上按salary升序创建了一个唯一索引
D.在emp表上按salary降序创建了一个唯一索引
第3题
(33)如果对关系 emp(eno, ename, salary)成功执行下面的SQL语句:
CREATE CLUSTER INDEX name_index ON emp(salary)
其结果是
A)在 emp表上按sal娜升序创建了一个聚簇索引
B)在 emp表上按salary降序创建了一个聚簇索引
C)在 emp表上按salary升序创建了一个唯一索引
D)在 emp表上按salary降序创建了一个唯一索引
第4题
(30 )如果对关系 emp (eno , ename , salray )成功执行下面的 SQL 语句:
CREATE CLUSTER INDEX name_index ON emp (salary )
对此结果的正确描述是
A) 在 emp 表上按 salary 升序创建了一个唯一索引
B) 在 emp 表上按 salary 降序创建了一个唯一索引
C) 在 emp 表上按 salary 升序创建了一个聚簇索引
D) 在 emp 表上按 salary 降序创建了一个聚簇索引
第5题
如果对关系emp(eno,ename,salary)成功执行下面的SQ[.语句:
CREATE CLUSTER INDEX name_index 0N emp(salary)
对此结果的正确描述是
A.在emp表上按salary升序创建了一个唯一索引
B.在emp表上按salary降序创建了一个唯一索引
C.在emp表上按salary升序创建了一个聚簇索引
D.在emp表上按salary降序创建了一个聚簇索引
第6题
如果对关系emp(cno,ename,salary)成功执行下面的SQL语句:
CREATE CLUSTER INDEX name_index ON emp(salary)
对此结果的正确描述是()。
A)在emp表上按salary升序创建了一个聚簇索引
B)在emp表上按salary降序创建了一个聚簇索引
C)在emp表上按salary升序创建了一个唯一索引
D)在emp表上按salary降序创建了一个唯一索引
第7题
如果对关系emp(eno,ename,salary)成功执行下面的SQ[.语句:
CREATE CLUSTER INDEX name_index 0N emp(salary)
对此结果的正确描述是
A.在emp表上按salary升序创建了一个唯一索引
B.在emp表上按salary降序创建了一个唯一索引
C.在emp表上按salary升序创建了一个聚簇索引
D.在emp表上按salary降序创建了一个聚簇索引
第8题
(1)CREATE ()
AS SELECT emp.Eno,emp.Ename ,salary.Hour,salary.Month,salary.Wage
FROM emp, salary
WHERE emp.Eno=salary.Eno
ORDER BY ENO
在此视图上查均月工资在3000以上的职工工资情况的SQL语句为:
SELECT Eno,Ename,AVG(Wage)
FROM V-Salary
GROUP BY ()
HAVING AVG(Wage)>3000
()
A. CREATE TABLE V-Salary(emp.Eno,emp.Ename,salary.Hour,salary.Month,salary.Wage)
B. CREATE VIEW V-Salary(Eno,Ename,Hour,Month,Wage)
C. CREATE TABLE V-Salary(Eno,Ename,Hour,Month,Wage)
D. CREATE INDEX V-Salary(Eno,Ename,Hour,Month,Wage)
()
A. Eno B.Ename
C.Month D.Wage
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