【最新】中央电大期末复习机械专业《机械CADCAM》试题及参考资料答案

第1题、填空

1.图标菜单段标题固定为__________，子菜单标题之下的第__________项为图标菜单的标题，图标菜单只能通过__________菜单或__________菜单调用。

参考答案： (***IMAGE) (一) (屏幕) (下拉)

2.零件分类方法中的编码分类法可以细分为_______________法、______________法和______________法。

参考答案： (特征码位) (码位) (特征位码域)

3.数控机床的_________环控制系统没有反馈测量系统，__________环控制系统的测量元件装在丝杆或伺服马达端部，用来检测丝杆或伺服马达的回转角，间接测出机床运动部件的__________，经反馈送回控制系统。参考答案： (开) (半闭) (位移)

4.在零件分类方法中，生产流程分析法可以分为关键___________法、顺序__________法和__________分析法。参考答案： (机床) (分枝) (聚类)

5.若数学表达示为X=a*b/5，则其AutoLISP语言的表达形式为：（setq______________________），式中命令setq的含义为给变量X_______ 参考答案：①X(/(*a b)5) ②赋值

6.一般树的每一个结点可以有________个子树，在二叉树中每个结点的子树不能超过____个，而且二叉树中的子树有_______之分，其次序不以颠倒。参考答案： (任意多) (二) (左右)

7.数控机床的坐标系统分为两种：____________坐标系统和____________坐标系统。参考答案： (绝对) (增量)

8.CAPP系统按其工作原理可以分为三种基本类型分别是____________式、___________式和____________式。参考答案： (检索) (派生) (创成)

9.AutoLISP语言使用的数值型数据有_________________数和_______________数两类。

参考案： (整型) (实型)

10.数据库中的数据模型一般分为三种，它们是_________型、________型和________型。

参考答案： (层次) (网络) (关系)

11.柔性制造系统是由______________系统、______________系统和______________系统三大部分组成的。

参考答案： (加工) (物流) (信息)

第2题、单项选择题

1.在数控机床CNC系统的组成中，核心部分为（）。

A．输入输出设备B．CNC装置C． PLC D．伺服机构参考答案： B

2.（*20（-5 2））的运行结果为（）。

A．10 B．30 C．60 D．50参考答案： C

3.在CIMS中，物料需求计划简称为（）。

A．MRPB．MAP1.0C．MRP-ⅡD．MRP-Ⅲ参考答案： A

4.（*20（+5 2））的运行结果为（）。

A．10 B．60C．140D．100参考答案： C

5.下述CAD/CAM过程的操作中，属于CAD的范畴的是（）。

A．CAPP B．CIMSC．FMS D．几何造型参考答案： D

6.在对话框结构中，按钮开关为（）。

A．toggle B．buttonC．image D．slider 参考答案： B

7.下述CAD/CAM过程的操作中，属于CAM的范畴的是（）。

A．优化设计 B．CAE C．数控加工D．几何造型参考答案： C

8.线性表的顺序存储结构适合于存储的数据是（）。

A．设计结果数据B．数据元素长度不同的数据

C．中间结果数据D．工程手册中的数据表参考答案： D

9.AutoCAD绘图软件的菜单中常用的两种菜单是（）。

A．下拉菜单和图标菜单B．下拉菜单和图形输入板菜单

C．屏幕菜单和图形输入板菜单D．按钮菜单和图标菜单

参考答案： A

10.在派生式CAPP系统中利用分类编码进行零件分类成组的主要依据是（）。

A．零件的材料B．物征矩阵C．典型工艺

D．零件的种类参考答案： B

11. FMS的管理控制系统的必备软件模块中不包括（）。

A．接口模块B．系统管理程序模块C．网络模块D．调度模块答案： C 12.语句(substr(“AutoCAD2 3))的执行结果是（）。

A．Aut B．CAD C．Ocd D．uto参考答案： D

13.在对话框构件中，滚动条构件为（）。

A．button B．toggleC．imageD．slider 参考答案： D

14.在AutoLISP中，(car(list x y z))的运算结果为( )。

A．X B．y C．z D．(y z) 参考答案： B 15.语句(max－2.1 3.4 －5 12.6)的执行结果是（）。

A．－2.1B．3.4 C．－5D．12.6参考答案： D

16.二叉树的遍历方式中，先左后右的方式不包括是（）。

A．DLR B．LDR C．RLD D．LRD参考答案： C

17.决策表又叫判定表，其中不包括（）。

A．分类B．结构C．性能D．决策参考答案： D

18.(*20(－6 2))的运行结果为（）。

A．12 B．24C．32D．80 参考答案： D

19.CIMS系统的构成有六个部分系统，但不是指（）。

A．信息管理系统B．工程设计系统C．CAD软件系统D．制造自动化系统

参考答案： C

20.FMS的管理控制系统必需具备的部分中不包括（）。

A．中央处理装置B．工件装卸工作站C．程序装置D．显示控制装置

参考答案： B

21.弹出表（Popup_list）包括五个属性，下列不属于它的属性是（）。

A．label B．value C．list D．allow 参考答案： D

22.编辑框（Edit_box）包括五个属性，下列不属于编辑框的属性是（）。

A．labelB．allow_accept C．list D．edit_width 参考答案： C

23. 决策树又叫判定树，它不包括（）。

A. 根

B. 干

C. 分枝

D. 节点参考答案： B

第3题、简答题

1.简述OPITZ系统第二个横向分类环节至第五个横向分类环节中有关回转体类零件部分的结构。

参考答案：对于无变异的正规回转体类零件，则按外部形状→内部形状→平面加工→辅助孔、齿形和成形加工这样的顺序细分。对于有变异的非正规回转体零件，则按外部形状→回转加工→平面加工→辅助孔、齿形和成形加工的顺序细分。

2.指出数控加工中的绝对坐标系统和相对坐标系统的主要不同点。

参考答案：绝对坐标方式就是系统中所有运动命令都涉及到某一个基准点或叫做零点，给出的位置命令是对零点的绝对距离。增量坐标方式是指一个指令的基准点就是前一项操作的终点，每一个尺寸数据都用作系统的距离增量。

3.简述图标菜单的主要特点。

参考答案：图标菜单段标题固定为***IMAGE，子菜单标题之下的第一项为图标菜单的标题，图标菜单只能通过屏幕菜单或下拉菜单调用。

4.CAD/CAM硬件系统的基本功能是什么？

参考答案： 1)快速计算和生成图形； 2)存储大量程序、信息及快速检索； 3)人机交互通讯的操作功能； 4)输入、输出图形及信息。

5.简述在单向链表的第8个元素前插入一个数据的过程。

参考答案：需先为第8个数据元素申请一个存储空间，得到一个新结点；找到第7个结点；将第7个结点的指针指向这个新结点的地址；再将这个新结点的指针指向第8个结点的地址。

6.简述决策表的结构和作用。

参考答案：决策表的结构：决策表是用符号描述事件之间逻辑关系的一种表格；它用双线和粗线将表格划分成四个区域；其中左上方列出所有条件，左下方列出根据条件组合可能出现的所有动作，双线右侧为一个矩阵，其中上方为条件组合，下方为对应的决策动作。矩阵的每一列可看成是一条决策规则。决策表的作用：是用表格结构来描述和处理“条件”和“动作”之间的关系和方法

7.ＧＴ分组技术，是现代化生产的基本内容，请简述顺序分技法原理及其工艺过程编码的三项基本规定。

参考答案：顺序分技法是按照全部零件的工艺过程逐个判别，实质归属相应的各级分枝组。三个基本规定： 1）若采用机床代码，规格相近的同类型机床用同一代码，同类机床用于不同性质加工工序应采用不同代码； 2）同一工艺过程中有若干工序使用相同代码，仅对最先工艺编码； 3）不需要特殊设备或采用低廉设备的辅助工序可以不予编码。

8.简述ＣＡＰＰ的四个意义？

参考答案： 1）代替了手工劳动； 2）提高了设计质量； 3）设计周期短、效率高； 4）有利于计算机集成制造。

Visa-free policy brings Chengdu biz, tourism boost. Making national headlines several times, Chengdu's 72-hour visa-free policy has attracted wide attention from both Chinese and foreign experts and businessmen since it took effect on Sept 1 last year. The program permits citizens from 51 countries and regions including the United States, Australia, Canada and Japan who have valid visas and flight tickets to a third country to spend three days in the city. The capital of Sichuan province is the first city in the western region of China to offer foreign tourists a three-day visa and the fourth nationwide to adopt the policy following Shanghai, Beijing and Guangzhou. Li Zhiyong, deputy dean of the tourism institute at Sichuan University, said the move "contributes to a large increase in the number of overseas tourists and raises the city's level of internationalization". "The policy will also bring direct economic revenue," Li said. "Chengdu has many cultural legacies and is also a paradise for panda lovers with the world's largest breeding and research center. Three days are long enough for foreign visitors to

visit those iconic tourist spots," he noted. The city is home to the remains of the Jin sha civilization that dates back more than 3,000 years as well as the Qing cheng Mountains and the Du jiang yan irrigation system. Qing cheng has long been recognized as the birthplace of Taoism, China's ancient indigenous religion, while Du jiang yan is considered to be the oldest functioning water-control project in the world. Chengdu ranked third in tourist facilities, management and services among 60

Chinese cities in a customer satisfaction survey released last year.But, Li added

that efforts are still needed to develop more tourism products, improve English

services and provide accurate translation of traffic signs and scenic billboards.

Zhao Yun, chairwoman of British Chamber of Commerce Southwest China, told

China Daily that his colleagues found the policy very convenient. "A British client once flew here and stayed for just one day to check her ordered goods," she said. Zhao was born in Shanxi province, but she has lived in Chengdu for more than 10 years. "My life was like a running race moving from place to place. I also lived in Beijing and Shanghai before," she said. "But Chengdu is a place that you never want

to leave once settling down. It is now my second hometown," she said. If the environment is further improved, the city will attract more people to visit and live, with the 72-hour visa-free policy and compelling conditions in transportation, culture, climate and cuisine, he said. Foreigners also gave positive feedback on the policy. A spokesman from Dell Inc said the company has a global hub of operation in Chengdu, so the

three-day visa "has an immediate and positive influence on the company's business development". Rudy Buttignol, president of the public broadcasting company in British Columbia, Canada, said his work requires frequent travel to Chengdu and the policy "makes the trips easier". Data from the city's public security bureau shows some 100 foreign visitors enjoyed the 72-hour policy by the end of March, most of them from the United States, the United Kingdom and Germany. Chengdu also reported robust growth in its overall tourist industry last year. Official statistics show that it received some 150 million tourists last year, an increase of 28 percent from 2012. Around 1.7 million came from abroad, an increase of 12 percent. Total revenue from tourism surpassed 133 billion yuan ($21.7billion). During his visit to Kazakhstan in September, Chinese President Xi Jinping proposed that China and Central Asia join hands to build a Silk Road economic belt to boost cooperation. The idea has been widely echoed in Central Asian countries, becoming an encouraging blueprint for Chinese areas along the Silk Road that has linked Asia and Europe for more than 2,000 years. In the next three weeks, China Daily reporters will travel through the belt in China and in Kazakhstan, Uzbekistan and Turkey. They will show the progress and expectations of the countries, businesses and peoples on the route. Shaanxi - the start of the ancient Silk Road - has positioned itself as the new starting point for the development of the Silk Road Economic Belt, which will strengthen China's cooperation with Central Asian countries, a senior official said.

Shaanxi Governor Lou Qinjian said the province is fresh, rich and unique, as it was when it anchored one end of the ancient Silk Road.

"It is the best option for accommodating industrial transfers from East China or the world at large," he said on Wednesday in Xi'an.

Lou held a joint interview with 27 media, including China Daily, the first in a series of interviews entitled Chinese Media Along the Silk Road. The interviews will be in Shaanxi and Gansu provinces and the Xinjiang Uygur autonomous region, as well as Kazakhstan, Uzbekistan and Turkey.

The media group held the first interview on Wednesday morning in Xi'an, the starting point of the ancient Silk Road, a trade channel established more than 2,000 years ago linking China, Central Asia and Europe.