陕西科技大学期末考试复习题第六期

1、 陕西科技大学期末考试复习题第六期 陕西科技大学 编 机电过控系 审第一篇 过程设备制造与检测10级试题陕西科技大学试题纸（A)课程 过程装备制造与检测 班级 过控10级 班 学号 姓名 题号一二三四五六七八九十总分得分阅卷人一，填空题，每空1分，共20分1，超声波检测的必要设备有 。增感屏的种类有 ，象质剂的种类有 ，常选用 。2，焊接接头的基本形式有 、 、 、 。3，按渗透剂的种类不同，渗透检测的方法有 和 两种。其中 法的检测灵敏度高。 4，筒体的拼接焊缝，每节筒体纵向焊缝中心线间的弧长不应小于 ，相邻筒体纵向焊缝，中心间的弧长不得小于 ，封头由瓣片和顶圆板拼制成时，焊缝方向只允许是

2、。5，在焊接热循环中对焊接接头组织、性能的影响，主要取决于 、 、 和 。6，常用的卷板机有 三种。封头冷热冲压成型的选择依据主要考虑 两个因素。二，判断，每题2分，共10分1，压力容器分为多层和单层，且以多层运用较多。 （ ）2，焊后热处理是将焊接装备的整体或局部均匀加热至金属材料相变点以上的温度范围内,保持一定时间,然后均匀冷却的过程. （ ）3，金属的临界变形率是指金属材料冷弯后产生粗大再结晶晶粒的变形率，通常情况下，金属的实际变形率应该小于临界变形率。 （ ）4，射线检测利用X射线检测时，按照照射质量可以分为A 、B 、C 三个等级，锅炉与部件的焊接质量检测等级应该选用B 级。 （ ）

3、5，磁粉检测磁化电流有交流和直流两种，选用时选用交流磁化的原因是容易退磁。 （ ）三，简答题，每题5分，共40分1，简述钨极氩弧焊的特点？2，钢材净化处理的操作内容及其作用？3，简述弯管时产生的缺陷和控制方法？4，射线检测的准备工作？5，简述压力容器的发展特点？6，为什么压力容器制造中，容器主要受压零部件、承压壳体的主焊缝（如壳体的纵缝和环焊缝等）采用全熔透的对接接头？7，以低碳钢为例简要说明焊接接头在组织、性能上较薄弱的区域是热影响区中的过热去？8，简述等离子弧切割的特点及其在化工设备制造中的应用？四，综合，30分1,0Cr18Ni9Ti属于何种钢种？分析该种钢的焊接性能？该类钢种在焊接过程

4、中产生的主要问题及其控制措施？利用手工电弧焊焊接时，简述其焊接工艺措施及选择焊条？12分2，封头的冲压成形中，为什么采用压边圈可以防止折皱的产生？简述球形封头，椭圆形封头和平顶封头采用压边圈的条件？简要分析半球形封头在冲压成型后的壁厚变化情况？12分3， 无折边锥形封头的展开计算，已知Dm=2000mm，dm=1200mm,=60。求展开后的圆心角，锥形封头小端半径r和大端半径R。 6分 第二篇 过程设备设计10级试题陕西科技大学 试题纸课程 过程设备设计 班级 过控10级 班 学号 姓名 题号一二三四五六七八九十总分得分阅卷人一，问答题。50分1，压力容器主要由哪几部分组成？分别起什么作用？

5、2，单层厚壁圆筒承受内压时，其应力分布有那些特征？当承受的内压很高时，能否仅用增加壁厚来提高承载能力，为什么？3，试述承受均布外压的回转壳破坏的形式，在设计时，需要校核的参数有哪些？并与承受均布内压的回转壳作比较，它们有何异同？4，一容器壳体的内壁温度为，外壁温度为，通过传热计算得出的元件金属截面的温度平均值为，请问设计温度取哪个？选材以哪个温度为依据？5，球形储罐有哪些特点？设计球罐时应考虑那些载荷？6，换热设备有哪几种主要形式？管壳式换热器主要有哪几种形式？7，除沫器布置在塔中的什么位置？作用是什么？8，搅拌轴的设计需要考虑哪些因素？9，法兰连接时，影响其密封性能的因素有哪些？10，进行内

6、压凸形封头设计时，接管对封头计算厚度有什么影响？二，画图题，20分。1，绘制出开孔补强的几种形式。6分2，绘制出至少三种折流板的形式。6分3，画出伍德密封的原理结构示意图，并进行结构标注说明，8分。三，一内压容器，设计（计算）压力为4,4MPa，最高温度为300；圆筒内径Di=2400mm，对接焊缝采用双面全熔透焊接接头，并进行局部无损检测；工作介质列毒性，非易燃，但对碳素钢、低合金钢有轻微腐蚀，腐蚀速率K0.1mm/a，设计寿命B=20年。材料为16MnR，计算圆筒，椭圆形封头及锥壳的厚度，确定校核时的压力。t=126Mpa（温度为300），163Mpa（20度时），b=305Mpa（20度

7、）。20分四，一多层包扎式氨合成塔，内径Di=1600mm，设计压力为30MPa，工作温度小于200，内筒材料为0Gr18Ni9Ti,层板材料为16MnR，取C2=2.0mm，试确定圆筒和包扎层的厚度。(t=114Mpa.)10分第三篇 综合试题10级期末考试部分真题题1 单片机简答题，40分1,MCS-51单片机基本特性.（单片机的组成部分？）按课本第二章第一节分类写较好，以下供参考。8 位的 CPU，片内有振荡器和时钟电路, 片内 128/256字节 RAM片内 0K/4K/8K字节 程序存储器ROM可寻址片外 64K字节 数据存储器RAM可寻址片外 64K字节 程序存储器ROM片内 21

8、/26个 特殊功能寄存器（SFR）4个8位 的并行I/O口（PIO）1个 全双工串行口（SIO/UART）2/3个16位 定时器/计数器（TIMER/COUNTER）可处理5/6个中断源，两级中断优先级内置1个布尔处理器和1个布尔累加器（Cy）MCS-51指令集含111条指令2,80C51存储空间配置图.3,8031最小应用系统4, MCS-51系列单片机能提供几个中断源、几个中断优先级？各个中断源的优先级怎样确定？在同一优先级中，各个中断源的优先顺序怎样确定？各个中断源的名称和入口地址分别是？MCS-51系列单片机的外部中断有哪两种触发方式？如何设置？对外部中断源的中断请求信号有何要求？答：

9、MCS-51系列单片机能提供5个中断源，2个中断优先级。各个中断源的优先级是由特殊功能寄存器IP来确定，IP中和各个中断源对应位为1时，此中断源为高优先级，否则为低优先级。在同一优先级中，各个中断源的优先顺序是由自然优先级来确定的。MCS-51系列单片机的外部中断有电平触发和边沿触发两种方式。是由特殊功能寄存器TCON中IT0,IT1的状态确定的，如：IT0为1时外部中断0为边沿触发方式，当INT0外部引脚出现下降沿时向CPU提出中断请求， 否则为电平触发方式，当INT0外部引脚出现低电平时向CPU提出中断请求。计算简答，30分5，设单片机晶振频率为 6 MHz，要求定时器T0产生100ms的

10、定时，试确定计数初值及TMOD的内容。 采用方式1 机器周期：T= 126 MHz= 2s 脉冲计数：C= 100ms/2s =5 104 则计数初值： TC= 216- 5 104 =15536 =3CB0HTMOD： T0 M1M0 =01，C/T=0，GATE=0 T1可任意设置 TMOD= 00000016、MCS-51有哪几种寻址方式？举例说明它们是怎样寻址的？答：MCS-51指令系统的寻址方式有以下7种：立即寻址方式：操作数直接出现在指令中。直接寻址方式中：操作数的单元地址直接出现在指令中。寄存器寻址方式中：寄存器中的内容就是操作数。寄存器间接寻址方式中，指定寄存器中的内容是操作数

11、的地址，该地址对应存储单元的内容才是操作数。变址寻址方式是以程序指针PC或数据指针DPTR为基址寄存器，以累加器A作为变址寄存器，两者内容相加（即基地址+偏移量）形成16位的操作数地址，相对寻址是以程序计数器PC的当前值作为基地址，与指令中的第二字节给出的相对偏移量rel进行相加，所得和为程序的转移地址。位地址：内部RAM地址空间的可进行位寻址的128位和SFR地址空间的可位寻址的11个8位寄存器的88位。位寻址给出的是直接地址。7，MOV A、#88HMOV R7，#AAHORL A、R7 ：A的内容为： MOV A，#37HMOV R7，#89HANL A，R7 A的内容为： XRL A，

12、R7 A的内容为： _RET题2 电子技术20122013年第一学期电子技术考试题型回顾总结和原题汇总一，（本大题15分）请用3-8译码器74LSl38及必要的门电路设计一位二进制数的全减器电路。74ls138真值表未给出。二，（本大题15分）电路如图所示，已知，要求:(1) 今测得，试求发射极电流以及晶体管的；(2) 欲将晶体管的集射极电压减小到8V，试求RB应调整为多大。(3) 画出小信号等效电路,求电压放大倍数、输入电阻和输出电阻。三74LS161是同步4位二进制加法计数器，其逻辑功能表如下，试分析下列电路是几进制计数器，并画出其状态图。（8分）74LS161逻辑功能表CTPCTTCPQ

13、3 Q2 Q1 Q00111CR LD CTP CTT D3 D2 D1 D0Q3 Q2 Q1 Q0CO74LS161CPCP&“1”“1”“1”101110101 0 0 0 0D3 D2 D1 D0Q3 Q2 Q1 Q0Q3 Q2 Q1 Q0 加法计数四、（10分）用74LS160和必要的门电路设计一个七进制计数器。五，试分析图8.2.1所示时序逻辑电路（20122013期末a卷时序电路逻辑分析原题)15分 解：分析过程如下： 1.写出各逻辑方程式 (1)这是一个同步时序电路，各触发器CP 信号的逻辑表达式可以不写。 (2)输出方程 Z =Q1nQ0n (3)驱动方程 J0=1 K0=1

14、2.将驱动方程代入相应的JK触发器的特征方程，求得各触发器的次态方程为： 3. 列状态表，画状态图和时序图 列状态表是分析时序逻辑电路的关键一步，其具体做法是：先填入电路现态Qn（本例中为Q1n ，Q0n ）的所有组合状态以及输入信号X的所有组合状态，然后根据输出方程及状态方程，逐行填入当前输出Z的相应值，以及次态Qn+1（Q1n+1 ，Q0n+1）的相应值。该电路的状态表如表8.2.1。根据状态表可作出状态图，如图8.2.2所示。 设电路的初始状态为Q1nQ0n=00，根据状态表和状态图,可画出在一系列CP脉冲作用下电路的时序图，如图8.2.3所示。 4.逻辑功能分析 由该例的状态图就可看出

15、，此电路是一个可控计数器。当X=0时，进行加法计数，在时钟脉冲作用下，Q1Q0的数值从00到11递增，每经过4个时钟脉冲作用后,电路的状态循环一次。同时在Z 端输出一个进位脉冲，因此，Z 是进位信号。当X=1时，进行减1计数，Z 是借位信号。 时序电路逻辑分析网址链接：六、（本大题7分）电路如图所示，求：（1）指出A1，A2各构成何种运算电路；（2）已知ui1=ui2=2V，电容C上的初始电压为零，求u01，并写出u0的表达式；（3）指出哪些运放存在虚地。第四篇 新世纪大学英语1. 大学英语综合教程1一：whoever is not acquainted with foreign langua

16、ges knows nothing of his own二：language is not an abstract construction of the learned,or of dictionary-makers,but is something arising out of the work,needs,ties,joys,affections,tastes of long generations of humanity,and has its bases broad and low,close to the ground.三：i have not conquered Spanish

17、yet ,i am learning and understand what is said during training.i am progressing little by little,Spanish is very difficult for me,although i am getting used to it.i am making an effort.it is complicated.but if i can conquer Spanish,it will have been a great achievement .四：you have to do your own gro

18、wing no matter how tall your grandfather was.五：the day the child realizes that all adults are imperfect,he become an adolescent;the day he forgives them,he becomes an adult;the day he forgives himself,he become wise.六：when i was a boy of fourteen,my father was so ignorant that i could hardly stand t

19、o have the old man around.but when i got to be twenty-one,i was astonished at how much the old man had learned in seven years.七：like father,like son.八：nearly all men can stand adversity,but if you want to test a mans character,give him power.九：when we see men of worth,we should think of equaling the

20、m;when we see men of a contrary character,we should turn inwards and examine ourselves.十：too often we underestimate the power of a touch,a smile,a kind word,a listening ear,an honest compliment,or the smallest act of caring,all of which have the potential to turn a life around.十一： most of all other

21、beautiful things in life come by twos and threes,by dozens and hundreds.plenty of roses,stars,sunsets,rainbows,brothers and sisters,aunts and cousins,but only one motherin the whole word.十二：to understand your parents love you must raise children yourself.十三：my mother had a great deal of trouble with

22、 me,but i think she enjoyed it.十四：as long as you have the blessing of your parents,it does not matter even if you live in the mountains.十五：i have always thought of Christmas as a good time;a kind,forgiving,charitable,pleasant time;the only time i know of in the long calendar of the year,when men and

23、 women seem by one consent to open their shut-up hearts freely.十六：Christmas is the season for kindling the fire of hospitality in the hall,the genial flame of charity in the heart.十七：Christmas is not a time nor a season,but a state of mind.to cherish peace and goodwill to be merciful is to have the

24、real spirit of Christmas.十八：i like to listen.i have learned a great deal from listening carefully.most people never listen.十九：we must learn to live together as brothers or perish together as fools.二十：we have two ears and one mouth so that we can listen twice as much as we speak.二十一：education is not

25、the filling of a pail,but the lighting of a fire.二十二：you can not teach a man anything;you can only help him find it within himself.二十三：the things taught in schools and colleges are not an education,but the means to an education2. 大学英语综合教程2一：study nature,love nature,stay close to nature.it will never

26、 fail you.二：look deep into nature,and then you will understand everything better三：we do not see nature with our eyes,but with our understandings and our hearts.四：the highest purpose is to have no purpose at all.this puts one in accord with nature,in her manner of operation.五：the saddest aspect of li

27、fe right now is that science gathers knowledge faster than society gathers wisdom.六：education makes machines which act like men and produces men who act like machines.七：The production of too many useful things results in too many useless people.八：it is difficult to say what is impossible,for the dre

28、ams of yesterday are the hopes of today,and the realities of tomorrow.九：knowledge is power十：to be conscious that you are ignorant is a great step to knowledge十一：knowledge is of no value unless you put it into practice.十二：perplexity is the beginning of knowledge.十三：work is something you can count on,

29、a trusted,lifelong friend who never deserts you.十四：you have achieved success in your field when you do not know whether what you are doing is work or play.十五：genius is one percent inspiration and ninety-nine percent perspiration.十六：far and away the best prize that life has to offer is the chance to

30、work hard at work worth doing .十七：fame is a heavy burden.十八：the secret of success is constancy of purpose.十九：the highest form of vanity is love of fame.二十：many of lifes failures are people who did not realize how close they were to success when they gave up.二十一：the talent of success is nothing more

31、than doing well whatever you do without a thought of fame.二十二：attitude has a little thing that makes a big difference.二十三：life is ten percent what happens to you and ninety percent how u respond to it.二十四：human beings,by changing the inner attitudes of their minds,can change the outer aspects of the

32、ir lives.二十五：when one door of happiness closes,another opens,but often we look so long at the closed door that we do not see the one which has been opened for us.二十六great things are not accomplished by those who yield to trends and fads and popular opinion.二十七：the saddest thing i can imagine is to g

33、et used to luxury.二十八：without frugality none can be rich,and with it very few would be poor.二十九：we are living beyond our means.as a people we have developed a lifestyle that is a draining the earth of its priceless and irreplaceable resources without regard for the future of our children and people

34、all around the world.三十：the decline of literature indicates the decline of a nation.三十一：all moral discipline,all moral perfection derives from the soul of literature.三十二：literature is the art of writing something that will be read twice.三十三：literature is the immortality of speech.3. 大学英语综合教程3一：the w

35、eak can never forgive.forgiveness is the attribute of the strong.2 harmony makes small things grow,lack of it makes great things decay.3 a wise man will make haste to forgive,because he knows the true value of time,and will not suffer it to pass away in unnecessary pain.四：the purpose of life is a li

36、fe of purpose五：we make a living by what we get,we make a life by what we give六：live as you were to die tomorrow,learn as if you were to live forever七：a man who dares to waste one hour of time has not not discovered the value of life.八：always bear in mind that your own resolution to succeed is more i

37、mportant than any one thing.九：success usually comes to those who are too busy to be looking for it.十：self-trust is the first secret of success十一：success is the ability to go from failure to failure without losing your enthusiasm.十二：try not to become a man of success but rather to become a man of val

38、ue.十三：laughter is the sun that drives winter from the human face.十四：what seems to us as bitter trials are often blessings in disguise.十五：a pessimist sees the difficulty in every opportunity,an optimist sees the opportunity in every difficulty.十六：optimism is the faith that leads to achievement,nothin

39、g can be done without hope and confidence.十七：character,in the long run,is the decisive factor in the life of an individual and of nations alike.十八：we must remember that intelligence is not enough,intelligence plus character -that is the true goal of education.十九：trust men and they will be true to yo

40、u,treat them greatly,and they will show themselves great.二十：honesty is the first chapter of the book of wisdom.二十一：every child is an artist,the problem is how to remain an artist once he grows up.二十二：the world is but a canvas to the imagination.二十三：happiness is not in the mere possession of money,it

41、 lies in the joy of achievement,in the thrill of creative effort.二十四：imagination is the beginning of creation,you imagine what you desire,you will what you imagine and at last you create what you will二十五：many hands make light work.二十六：if everyone is moving forward together,the success takes care of

42、itself.二十七：talent wins games,but teamwork and intelligence win championships.二十八：a great person attracts great people and knows how to hold them together二十九：smooth seas do not make skillful sailors.三十：when it is dark enough,you can see the stars.三十一：adversity is the first path to truth.三十二：if we had

43、 no winter,the spring would not be so pleasant,if we did not sometimes taste of adversity,prosperity would not be so welcome4. 大学英语综合教程4一：true friendship is a plant of slow growth.二：be slow in choosing a friend,slower in changing.三：a man should keep his friendships in constant repair.四：true friendsh

44、ip is like sound health,the value of it is seldom known until it is lost.五：the course of truelove never did run smooth.六：to fear love is to fear life,and those who fear life are already three parts dead.七：where does the family start?it starts with a young man falling in love with a girlno superior a

45、lternative has yet been found.八：it is not how much we do,but how much love we put in the doing.it is not how much we give,but how much love we put in the giving.九：happiness is the meaning and the purpose of life,the whole aim and end of human existence.十：we have no more right to consume happiness wi

46、thout producing it than to consume wealth without producing it.十一：the surest way to happiness is to lose yourself in a cause greater than yourself.the secret of happiness is not in doing what one likes,but in liking what one does十二：a healthy body is the guestchamber of the soul,a sick,its prison.十三：

47、cheerfulness is the best promoter of health and it as friendly to the mind as to the body.十四：money is the most envied,but the least enjoyed.health is the most enjoyed,but the least envied.十五：giving is the secret of a healthy life.not necessarily money,but whatever a man has of encouragement and symp

48、athy and understanding.十六：educations purpose is to replace an empty mind with an open one.十七：the object of education is to prepare the young to educate themselves throughout their lives.十八：there are two types of educationone should teach us how to make a living, and the other how to live十九：we are bo

49、rn weak ,we need strength.helpless,we need aid;foolish,we need reason.all that we lack at birth,all that we need when we come to mans estate,is the gift of education.二十：variety is the very spice of life that gives it all its flavor.二十一：if man is to survive,he will have learned to take a delight in t

50、he essential differences between men and between cultures .he will learn that difference in ideas and attitudes are a delight,part of lifes exciting variety,not something to fear.二十二：i do not want my house to be walled in on all sides and my windows to be stuffed.i want the cultures of all the lands

51、 to be blown about my house as freely as possible.but i refuse to be blown off my feet by any.二十三：other nations of different habits are not enemies:they are godsends,men require of their neighbors something sufficiently 第五篇 英语四六级If u can grasp the following phrases , the cet4 and cet6 is easy for u.

52、1. abide by(=be faithful to ; obey)忠于；遵守。 2. be absent from. 缺席，不在 3. absence or mind(=being absent-minded) 心不在焉 4. absorb(=take up the attention of)吸引的注意力(被动语态):be abso rbed in 全神贯注于近:be engrossed in ; be lost&nbs p;in ; be rapt in ;be concentrated on ;& nbsp;be focused on ; be centered on 5. (be)

53、abundant in(be rich in; be well supplie d with) 富于,富有 6. access(to) (不可数名词) 能接近,进入,了解 7. by accident(=by chance, accidentally)偶然地,意外. Without a ccident(=safely) 安全地, 8. of ones own accord(=without being asked; willing ly; freely)自愿地 ,主动地 9. in accord with 与一致 &nb sp; . &nbs p; out of ones&n bsp;accord with 同.不一致 10. with one accord (=with everybody agreeing)一