二级vf考试试题及答案

一.选择题

1.欲从项目管理器中创建菜单，应选择选项卡:HTMLCONTROLForms.HTML:Option.1文档HTMLCONTROLForms.HTML:Option.1代码HTMLCONTROLForms.HTML:Option.1其它HTMLCONTROLForms.HTML:Option.1数据HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

2.菜单中定义访问键，在访问键前应加上字符：HTMLCONTROLForms.HTML:Option.1“Ctrl+”HTMLCONTROLForms.HTML:Option.1“Alt+”HTMLCONTROLForms.HTML:Option.1“\<”HTMLCONTROLForms.HTML:Option.1“（\-”HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

3.要给表文件学生.DBF中的整数型字段“入学总分”指定取值范围为550≤入学总分≤650，以下正确的命令是()。HTMLCONTROLForms.HTML:Option.1ALTERTABLE学生ALTER入学总分(INT)CHECK550<=入学总分<=650HTMLCONTROLForms.HTML:Option.1ALTERTABLE学生ALTER入学总分(INT)CHECK550<=入学总分AND入学分总<=650HTMLCONTROLForms.HTML:Option.1ALTERTABLE学生SET入学总分(INT)CHECK550<=入学总分AND入学总分<=650HTMLCONTROLForms.HTML:Option.1ALTERTABLE学生SET入学总分(INT)CHECK550<=入学总分<=650HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：2

4.表格中的列控件默认是:HTMLCONTROLForms.HTML:Option.1TextBoxHTMLCONTROLForms.HTML:Option.1EditBoxHTMLCONTROLForms.HTML:Option.1CheckBoxHTMLCONTROLForms.HTML:Option.1ListBoxHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：1

5.用二维表形式表示的数据模型是（）HTMLCONTROLForms.HTML:Option.1层次数据库HTMLCONTROLForms.HTML:Option.1网状数据模型HTMLCONTROLForms.HTML:Option.1网络数据模型HTMLCONTROLForms.HTML:Option.1关系数据模型HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：4

6.如果要选取一个关系中的若干属性，应使用的关系运算是（）HTMLCONTROLForms.HTML:Option.1连接HTMLCONTROLForms.HTML:Option.1选择HTMLCONTROLForms.HTML:Option.1投影HTMLCONTROLForms.HTML:Option.1重建HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

7.当数据表在原始物理顺序中记录指针指向第一个记录之前，则EOF（）、BOF（）和RECNO（）的返回值分别为（）。HTMLCONTROLForms.HTML:Option.1.T.、.T.和0HTMLCONTROLForms.HTML:Option.1.F.、.T.和1HTMLCONTROLForms.HTML:Option.1.T.、.F.和0HTMLCONTROLForms.HTML:Option.1.F.、.T.和0HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：2

8.在下面的表达式中，运算结果是逻辑真的是（）。HTMLCONTROLForms.HTML:Option.1EMPTY（SPACE（10））HTMLCONTROLForms.HTML:Option.1LIKE（"EDIT","EDI?"）HTMLCONTROLForms.HTML:Option.1EMPTY（NuLL）HTMLCONTROLForms.HTML:Option.1AT（"a","123abc"）HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：1

9.想要将日期型或日期时间型数据中的年份用4位数字显示，应当使用设置命令（）HTMLCONTROLForms.HTML:Option.1SETCENTURYOFFHTMLCONTROLForms.HTML:Option.1SETCENTURYOF4HTMLCONTROLForms.HTML:Option.1SETCENTURYONHTMLCONTROLForms.HTML:Option.1SETCENTURYTO4HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

10.执行下列命令后，屏幕上显示的结果是（）。X=＂AREYOUOk?＂Y=＂are＂?AT(Y,X)HTMLCONTROLForms.HTML:Option.1.T.HTMLCONTROLForms.HTML:Option.11HTMLCONTROLForms.HTML:Option.10HTMLCONTROLForms.HTML:Option.1.F.HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

11.在VFP中，要关闭"Command"窗口，应选择"窗口"菜单中的选项是（）。HTMLCONTROLForms.HTML:Option.1命令窗口HTMLCONTROLForms.HTML:Option.1隐藏HTMLCONTROLForms.HTML:Option.1清除HTMLCONTROLForms.HTML:Option.1数据工作期HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：2

12.用INSERT命令插入一条记录时，被插入的记录在表中的位置是（）。HTMLCONTROLForms.HTML:Option.1表的最前HTMLCONTROLForms.HTML:Option.1表的尾部HTMLCONTROLForms.HTML:Option.1当前记录之后HTMLCONTROLForms.HTML:Option.1当前记录之前HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

13.如果要为控件设置焦点，则下列属性值是真（.T.）的是_______。HTMLCONTROLForms.HTML:Option.1Enabled和VisibleHTMLCONTROLForms.HTML:Option.1Visible和DefaultHTMLCONTROLForms.HTML:Option.1Default和CancelHTMLCONTROLForms.HTML:Option.1Enabled和DefaultHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：1

14.在VFP中，将A盘文本文件JAKE.TXT中的记录，添加到当前表的末尾，应该执行命令（）。HTMLCONTROLForms.HTML:Option.1APPENDFROMA:JAKE.TXTSDFHTMLCONTROLForms.HTML:Option.1COPYFROMA:JAKE.TXTHTMLCONTROLForms.HTML:Option.1APPENDFROMA:JAKE.TXTHTMLCONTROLForms.HTML:Option.1COPYFROMA:JAKE.TXTSDFHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：1

15.要显示表XSCJ.DBF中平均分超过90分和不及格的全部女生记录，应当使用的命令是（）。HTMLCONTROLForms.HTML:Option.1LISTFOR性别="女".AND.(平均分>90.OR.平均分<60)HTMLCONTROLForms.HTML:Option.1LISTFOR性别="女",平均分>90,平均分<60HTMLCONTROLForms.HTML:Option.1LISTFOR性别="女",平均分>=90,平均分<=60HTMLCONTROLForms.HTML:Option.1LISTFOR性别="女".AND.平均分>90.AND.平均分<60HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：1

16.下列命令用于显示1968年及其以前出生的职工记录，其中错误的是（）。HTMLCONTROLForms.HTML:Option.1LISTFORYEAR(出生日期)<=1968HTMLCONTROLForms.HTML:Option.1LISTFORSUBSTR(DTOC(出生日期),7,2)<=”68”HTMLCONTROLForms.HTML:Option.1LISTFORRIGHT(DTOC(出生日期),2)<=”68”HTMLCONTROLForms.HTML:Option.1LISTFORLEFT(DTOC(出生日期),7,2)<=”68”HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：4

17.在VFP中，字段长度只受外存可用空间限制的字段类型为()。HTMLCONTROLForms.HTML:Option.1CharacterHTMLCONTROLForms.HTML:Option.1MemoHTMLCONTROLForms.HTML:Option.1NumericHTMLCONTROLForms.HTML:Option.1FloatHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：2

18.当前数据表文件有10条记录，要在第5条记录后面插入1条新记录，应使用命令（）。HTMLCONTROLForms.HTML:Option.1APPENDHTMLCONTROLForms.HTML:Option.1INSERTHTMLCONTROLForms.HTML:Option.1BROWSE.HTMLCONTROLForms.HTML:Option.1EDITHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：2

19.表文件与其相应的索引文件已经打开，内存变量XM="李春"，执行以下命令时会发生错误的是（）。HTMLCONTROLForms.HTML:Option.1LOCATEFOR姓名=XMHTMLCONTROLForms.HTML:Option.1SEEKXMHTMLCONTROLForms.HTML:Option.1LOCATEFOR姓名=&XMHTMLCONTROLForms.HTML:Option.1FIND&XMHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：3

20.在VFP中函数SELECT（）的值为（）。HTMLCONTROLForms.HTML:Option.1文件型HTMLCONTROLForms.HTML:Option.1逻辑型HTMLCONTROLForms.HTML:Option.1字符型HTMLCONTROLForms.HTML:Option.1数值型HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：4二.判断题

21.表单的方法就是已封装的程序，其内容可由使用者重新定义编写。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：N

22.报表的结果除Preview与ToPrinter外,可以ToFile，成为一个文本文件。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

23.?和??都是从当前光标所在行的下一行开始显示。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：N

24.使用SQL－INSERT命令可以向表中任意位置插入记录。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：N

25.逻辑型字段的宽度为1。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

26.用APPENDBLANK追加记录时不进入到全屏幕编辑状态。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

27.已知数组QQ(10),命令STORE0TOQQ执行后数组的10个元素都为0。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

28.“+”号运算符和“-”号运算符，在VFP中可用于字符型和逻辑型数据类型中。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：N

29.编辑框实际上是一个完整的字处理器，可进行选择、剪切、粘贴及复制正文等操作，但在编辑框中只能输入和编辑字符型数据。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

30.在VFP中能真正改变记录物理顺序的操作是排序。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y

31.报表文件的扩展名是.MNXHTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：N

32.一个报表可以设置一个或多个数据分组。HTMLCONTROLForms.HTML:Option.1NHTMLCONTROLForms.HTML:Option.1YHTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：Y三.读程序(每段程序有两个小题)

33.程序执行完后，第一条?y命令显示的结果为：HTMLCONTROLForms.HTML:Option.16HTMLCONTROLForms.HTML:Option.15HTMLCONTROLForms.HTML:Option.14HTMLCONTROLForms.HTML:Option.13HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：A

34.程序执行完后，?x命令显示的结果为：HTMLCONTROLForms.HTML:Option.16HTMLCONTROLForms.HTML:Option.15HTMLCONTROLForms.HTML:Option.14HTMLCONTROLForms.HTML:Option.13HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：A

35.执行命令?AB后，屏幕显示的结果是：HTMLCONTROLForms.HTML:Option.1999ABHTMLCONTROLForms.HTML:Option.1999BAHTMLCONTROLForms.HTML:Option.1AB999HTMLCONTROLForms.HTML:Option.1BA999HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：D

36.执行命令?VAL(AB)后，屏幕显示的结果是：HTMLCONTROLForms.HTML:Option.1BAHTMLCONTROLForms.HTML:Option.1ABHTMLCONTROLForms.HTML:Option.1999HTMLCONTROLForms.HTML:Option.10.00HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：D

37.程序执行后，A的值为HTMLCONTROLForms.HTML:Option.113.00HTMLCONTROLForms.HTML:Option.114.00HTMLCONTROLForms.HTML:Option.115.00HTMLCONTROLForms.HTML:Option.116.00HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：C

38.程序执行后，B的值为HTMLCONTROLForms.HTML:Option.14.00HTMLCONTROLForms.HTML:Option.15.00HTMLCONTROLForms.HTML:Option.16.00HTMLCONTROLForms.HTML:Option.17.00HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：A

39.程序运行到第一个?A,B,C后屏幕显示的结果为HTMLCONTROLForms.HTML:Option.125V5HTMLCONTROLForms.HTML:Option.125V0HTMLCONTROLForms.HTML:Option.1FoxProFoxHTMLCONTROLForms.HTML:Option.10V5HTMLCONTROLForms.HTML:Option.1你的答案：0标准答案：D

40.程序运行到第二个?A,B,C后屏幕显示的结果为HTMLCONTROLForms.HTML:Option.10V15