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LabVIEWCLAD模拟试题(中文)

LabVIEWCLAD模拟试题(中文)
LabVIEWCLAD模拟试题(中文)

1. 在何处向VI添加的说明信息会显示在“显示即时帮助”弹出窗口?

a. 使用VI属性说明信息窗口

b. 在即时帮助窗口中输入

c. 在前面板上创建一个自由标签

d. 编辑LabVIEW帮助文件

2. 连线可以在并行执行的循环间传递数据吗?

a. 可以

b. 不可以

3. 下列关于选项卡控件的描述,正确的是?

a. 选项卡控件的输出值是选中的选项卡标签的ASCII值

b. 选项卡控件是一种枚举型控件

c. 选项卡控件的输出值是选项卡上的控件簇

d. 选项卡控件的输出值是前面板上控件的Tab键顺序

4. 运行DataSocket VI之前必须先启动哪个服务器?

a. HTTP服务器

b. DataSocket服务器

c. FTP服务器

d. OPC服务器

5. 强制转换点表示:

a. 数据类型一致

b. 对数据执行多态运算

c. 创建一个数据缓冲区,处理数据转换

d. 数值超出范围,应进行强制转换

6. 下列关于程序框图的表述,正确的是?

a. 循环将执行一次,计数接线端

将输出值1

b. 循环将执行一次,计数接线端将输出值0

c. 循环将执行无穷次,需中止程序

d. 循环不执行,计数接线端将输出空值

7. 下列不能用于传递数据的是?

a. 信号量

b. 队列

c. 通知器

d. 局部变量

8. 下列接线端中控制For循环执行次数的是?

a. b. c. d.

9. 在VI前面板上有一个控件,需在运行时修改其属性。最佳方法是?

a. 创建一个隐式属性节点,选择要修改的属性

b. 创建一个控件引用,将引用传递至属性节点,选择要修改的属性

c. 创建一个链接至控件的共享变量,选择要修改的属性

d. 创建一个局部变量,选择要修改的属性

10. 公式节点可进行下列哪种运算?

a. 基本编程指令Input和Print

b. 在公式节点中嵌套子VI

c. 与C语言类似的前后递增(++)和递减(--)

d. 嵌套式公式节点结构

11.更新前面板显示控件的最佳方法是?

a. 使用“值”属性节点

b. 直接连线显示控件接线端

c. 使用局部变量

d. 使用功能局部变量

12.下列哪个函数按照元素的自有标签组合簇元素?

a. 按名称解除捆绑

b. 解除捆绑

c. 按名称捆绑

d. 捆绑

13. 选择连接输入时,程序框图上“创建数组”函数的输出是?

a. 一维数组{1, -4, 3, 7, -2, 6}

b. 一维数组{1, 7, -4, -2, 3, 6}

c. 二维数组{{1, -4, 3, 0}, {7, -2, 6}}

d. 二维数组{{1, -4, 3}, {7, -2, 6}}

14. 执行下列代码后,“初始化数组”函数的输出是?

a. 一维数组{3, 3, 3, 3}

b. 一维数组{4, 4, 4}

c. 一维数组{3, 4}

d. 一维数组{4, 3}

15. 使用状态机VI架构的缺点是?

a. 状态机只能按顺序执行状态

b. 如果两个状态同时发生,只处理第一个状态变化,第二个状态变化将丢

c. 将通用架构转换为状态机架构后,程序框图将显著增大

d. 状态机不能采集数据或使用DAQ函数

16. 发生错误时停止While循环的最佳方法是?

a. 比较错误簇的状态布尔值与常量,然后将比较结果连接至停止接线端

b. 直接将错误连线连接至停止接线端

c. 创建一个事件结构处理错误事件

d. 使用错误处理器VI自动处理错误

17. 如需模拟Windows对话框的按钮,应选择哪种布尔机械动作?

a. 保持转换直到释放

b. 释放时转换

c. 保持触发直到释放

d. 释放时触发

18. 下列哪个词语组合可完成下列表述?

与__________显示整个波形覆盖已存储的数据不同,___________周期性更新,并保持之前存储数据的历史记录。

a. 图形;图表

b. 图表;绘图区

c. 绘图区;图形

d. 图表;图形

19. 在什么情况下,应选择使用探针工具而非高亮显示执行过程?

a. 查看数据流

b. 查看连线上的实时值

c. 进程运行时,查看子VI

d. 降低VI运行速度,显示连线上的值

20.自定义一个控件:在控件类型下拉菜单中选择“输入控件”,并将控件保存为.ctl 文件。然后在前面板上使用该自定义控件的实例。如打开.ctl 文件修改控件,前面板上的控件会有相应改动吗?

a. 有

b. 没有

21. 创建仅输出一个值的子VI,并在某个VI中调用该子VI。下列哪个选项是通过数据流控制子VI执行的最佳方法? a. 在顺序结构中使用子VI

b. 修改子VI,创建虚输入端,供调用方VI使用

c. 修改子VI,添加错误簇,供调用方VI使用

d. 修改子VI,创建全局变量,供调用方VI使用

22. 执行下列代码后,移位寄存器结果的值是多少?

a. 16

b. 24

c. 32

d. 10

23. 哪种图表刷新模式用于从左到右绘制新数据,然后清除图表,再从左到右更新数据?

a. 带状图表

b. 示波器图表

c. 扫描图

d. 步骤图表

24. 下列哪项说明了全局变量相对于局部变量的优点?

a. 全局变量可在两个同时运行的独立VI之间传递数据

b. 只有全局变量可传递数组数据,局部变量不可传递数组数据

c. 全局变量符合数据流模型,不会造成竞争状态

d. 全局变量使用时不需要自有标签

25. 在运行周期较长的应用程序中,哪个定时函数/VI是最佳选择?

26. 在下列哪个条件下,For循环将停止运行?

a. 条件接线端出现FALSE值,且条件接线端为时

b. 计数接线端的值比总数接线端的值小1时

c. 计数接线端的值比总数接线端的值大1时

d. 以上均不正确

27.输入一个表示圆的数据。圆的数据包括一个x坐标、一个y坐标以及半径值。这三个数据都是双精度。用户今后可能需要保存圆的颜色,颜色值用一个整型变量表示。如何在前面板窗口表示圆?

a. 使用三个输入控件,两个表示位置和一个表示半径

b. 包含所有数据的簇

c. 包含簇的自定义类型

d. 包含三个元素的数组

28. 下列哪项将产生LabVIEW事件结构可捕捉的事件?

a. 通过鼠标单击更改前面板控件的值

b. 使用属性节点更新前面板控件的值

c. 使用控件引用通过编程更新前面板控件

d. 使用VI服务器更新前面板控件

29. 下列哪项不符合数据流编程方式?

a. 移位寄存器

b. 隧道

c. 子VI

d. 局部变量

30.如其他工程师需通过Microsoft Excel分析已存储的数据,应使用哪种文件存储格式?

a. 用制表符分隔的ASCII

b. 自定义二进制格式

c. TDM

d. 数据记录

31. 下列数组相加后,得到的结果是?

a. 一维数组{80, 20, 40, 10, -60}

b. 一维数组{120, 30, -60}

c. 一维数组{120, 30}

d.

二维数组{{120, 90, 20}, {60, 30, -40}}

32. 下列哪项表述有误?

a. 子VI连线板定义了输入和输出连线

b. 子VI连线板接线端的颜色与其连接的数据类型匹配

c. 子VI必须有图标/连线板,方可使用

d. 在函数选板上可编辑子VI图标

33. 创建数组最简单直接的方法是:

a. 使用For循环,启用自动索引

b. 在While循环中放置一个“创建数组”函数

c. 初始化数组,然后在While循环中替换元素

d. 使用While循环,启用自动索引

34. 下列程序框图代表了哪种常见的VI架构?

a. 多条件结构VI

b. 通用VI

c. 状态机VI

d. 并行循环VI

35. 下列关于计数接线端的表述,正确的是?

a. 计数接线端将返回循环已执行的次数

b. 计数接线端将返回循环已执行的次数加1

c. 计数接线端将返回循环已执行的次数减1

d. 计数接线端将返回一个常数

36. 下列哪个程序框图将生成该前面板?

37. 下列哪个程序框图将产生该波形图?

下列问题可能有一个以上选项。请圈出所有正确答案。

38. 如子VI的某个输入端的名称在显示即时帮助窗口中以粗体显示,下列表述正确的是?

a. 输入值必须是标量

b. 输入为推荐连线,非必需连线

c. 输入为必需连线

d. 如未连接该输入端,运行按钮将断开

39.下列关于属性节点的表述,正确的是?

a. 使用属性节点可通过编程设置前面板对象的属性

b. 属性节点可用于更新前面板对象的值

c. 一个前面板对象可使用多个属性节点

d. 子VI中包含的属性节点可将子VI的前面板加载至内存

40. 子VI的哪个/哪些部分是常驻内存的?

a. 数据空间

b. 前面板

c. 程序框图

d. 代码

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