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Time Picker控件24小时设定的方法是?()A、Setls 24 Hour View()B、Setls 24 Hour View(true)C、Setls 24 Hour View(1)

题目

Time Picker控件24小时设定的方法是?()

  • A、Setls 24 Hour View()
  • B、Setls 24 Hour View(true)
  • C、Setls 24 Hour View(1)
参考答案和解析
正确答案:B
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相似问题和答案

第1题:

What is true about updates through a view? ()

A. You cannot update a view with group functions.

B. When you update a view group functions are automatically computed.

C. When you update a view only the constraints on the underlying table will be in effect.

D. When you update a view the constraints on the views always override the constraints on the underlying tables.


参考答案:A

第2题:

类time可以输出12小时或24小时制的时间,现需要设计一个缺省构造函数,缺省值为0时0分0秒。该缺省构造函数为______。

include<iostream.h>

class Time

{

int h,m,s;

public:

Time(int hour=0,int min=0,int sec=0){settime(hour,min,sec);}

void settime(int hour,int min,int sec){h=hour;m=min;s=sec;}

void show24( )

{ cout<<(h<10?"0":"")<<h<<":"<<(m<10?"0":"")<<

m<<":"<<(s<10?"0":"")<<s<<endl;

}

void showl2( )

{ int temp=(h= =0 || h= =12)? 12:h%12;

cout<<(temp<10?"0":"")<<temp<<":"<<(m<10?"0":"")

<<m<<":"<<(s<10?"0":"")<<s<<((temp>0&&h<12)?"

AM":"PM")<<endl;

}

};

void main( )

{

Time t(15,43,21);

t.showl2( );

t.show24( );

}


正确答案:Time( ){h=0;m=0;s=0;}
Time( ){h=0;m=0;s=0;} 解析:注意缺省构造函数为无参构造函数,且必须为私有数据成员赋初值。

第3题:

It was ( )ride from the school to the downtown.

A、an half hour’s

B、half an hour

C、half an hour’s

D、half a hour’s


参考答案:C

第4题:

Yesterday we had () talk.

  • A、one and a half hour’s
  • B、one and a half hour
  • C、an hour and a half’s
  • D、an hour’s and a half

正确答案:C

第5题:

The vehicle was traveling at speeds______90 miles per hour.

A.in addition to

B.in view of

C.in excess of

D.in search of


正确答案:C
解析:句意:汽车正在以超过每小时90公里的速度前行。本题考查介词短语的辨析。in addition to 除……之外;in view of鉴于,由于;in excess of超过;in search of寻找。

第6题:

● 设有职工表emp(Eno,Ename,Sex,Age)(Eno为职工号,Ename为职工姓名,Sex为性别,Age为年龄)和salary(Eno,Hour,Month,Wage)(Hour为工作时长为多少小时,Month表示几月份,Wage为薪水),建立一个视图V-Salary(Eno,Ename,Hour,Month,Wage),并按Eno升序排序的SQL语句为:

(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


正确答案:B,A
此题第一空容易,考查考生是否了解建立视图的语法规则。第二空也比较明显,在salary中有字段Month,用于标识当前记录是哪个月的工资记录,这就意味着在数据表中,一个Eno对应着多个工资记录,要计算平均值,可以先按Eno进行分组,再求工资平均值,所以第2空填A。

第7题:

A view is created with the following statement:CREATE VIEW v1 AS SELECT col1, col2, col3 FROM t1 WHERE col4 > 1000 ; When will DB2 access the data from table T1 for view V1?()

A.When view V1 is created

B.Each time the REFRESH VIEW v1 statement is executed

C.Each time an SQL statement is executed against view V1

D.Only the first time an SQL statement is executed against view V1


参考答案:C

第8题:

The students must finish the test in().

A、three quarters of an hour time

B、three quarter's of an hour time

C、three quarters of an hour's time

D、three quarters'of an hour's time


正确答案: C

第9题:

Yesterday we had () talk.

Aone and a half hour’s

Bone and a half hour

Can hour and a half’s

Dan hour’s and a half


C

第10题:

ODMC创建报告时的最大时间间隔为()

  • A、1hour
  • B、4hour
  • C、12hour
  • D、24hour

正确答案:D

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