组成样卷A卷_答案
物理化学(下)考试卷A及答案 苏大
物理化学(下)样卷一、填空题(每小题2分,共20分)1、298K ,当H 2SO 4溶液浓度从0.01mol ⋅ kg -1增加到0.1mol ⋅ kg -1时,其电导率 κ 和摩尔电导率 Λm 将: ( )(A )κ 减小,Λm 增加 (B )κ 增加,Λm 增加(C )κ 减小,Λm 减小 (D )κ 增加,Λm 减小2、下列对原电池的描述哪个是不准确的? ( )(A )在阳极上发生氧化反应(B )电池内部由离子输送电荷(C )在电池外线路上电子从阴极流向阳极(D )当电动势为正值时电池反应是自发的3、在用对消法测定电池的电动势时,通常必须用到: ( )(A )标准氢电极 (B )甘汞电极(C )标准电池 (D )活度为1的电解质溶液4、一个电池反应确定的电池,电动势E 值的正负可以用来说明: ( )(A )电池是否可逆 (B )电池反应是否已达平衡(C )电池反应自发进行的方向 (D )电池反应的限度5、某燃料电池的反应为:H 2(g) + 1/2O 2(g) = H 2O(g),在400K 时的m r H ∆和m r S ∆分别为- 251.6 kJ ⋅ mol -1和- 50 J ⋅ K -1 ⋅ mol -1,则该电池的电动势为 ( )(A )1.2V (B )2.4V (C )1.4V (D )2.8V6、已知ϕ o ( Fe 2+ / Fe ) = - 0.4402V , ϕ o ( Cd 2+ / Cd ) = - 0.4029V , 将金属铁粉和镉粉丢入含Fe 2+ ( 0.1mol ⋅ kg -1 )和Cd 2+ ( 0.001mol ⋅ kg -1 )的溶液中,铁粉和镉粉是否会溶解:( )(A )铁粉和镉粉皆会溶解 (B )铁粉和镉粉皆不会溶解(C )铁粉溶解、镉粉不溶 (D )镉粉溶解、铁粉不溶7、常用的甘汞电极的电极反应:Hg 2Cl 2(s) + 2e - = 2Hg(l) + 2Cl -(aq),设饱和甘汞电极、摩尔甘汞电极和0.1mol ⋅ dm -3 甘汞电极的电极电势相应地为ϕ 1、ϕ 2、ϕ 3,则298K 时,三者之相对大小是 ( )(A )ϕ 1 > ϕ 2 > ϕ 3 (B )ϕ 1 < ϕ 2 < ϕ 3(C)ϕ2 > ϕ1 > ϕ3 (D)ϕ3 > ϕ1 = ϕ28、两半电池之间使用盐桥测得电动势为0.059V,当盐桥拿走,使两溶液接触,这时测得电动势为0.048V,则液接电势值为:()(A)- 0.011 V (B)0.011 V (C)0.107 V (D)- 0.107V9、测定溶液的pH值的最常用的指示电极为玻璃电极,它是()(A)第一类电极(B)第二类电极(C)氧化还原电极(D)氢离子选择性电极10、用铜电极电解CuCl2的水溶液,在阳极上会发生:()(A)析出氧气(B)析出氯气(C)析出铜(D)铜电极溶解二、填空题(每小题3分,共15分)1、测定电解质溶液电导时必须采用_________电源,以防止__________________。
井冈山大学《逻辑学》期末考试样卷
井冈山大学《逻辑学》期末考试试题样卷(A卷)一、填空题(10分)1、“如果有的科目考试不及格,那么他领不到毕业证。
”这个判断的逻辑形式为,其中,逻辑常项是,逻辑变项是和。
2、在三段论第一格中,中项M分别是大前提的和小前提的。
3、根据有关推理规则,判断不能换位,不能换质位。
4、根据不矛盾律,可由一个判断真,推出与其具有关系或具有关系的判断假。
二、单项选择题(共20题,每小题1分,共20分)1.在“青年是祖国的未来”和“青年应该奋发向上”两语句中,概念“青年”( )A.都是集合概念 C.前者是集合概念,后者是非集合概念B.都是非集合概念 D.前者是非集合概念,后者是集合概念2.对于A、B两概念,如果所有a都是b并且有b不是a,那么,A、B两概念具有()A.全同关系B.真包含于关系C.交叉关系D.全异关系3.同一素材性质判断主要是指( )的两个性质判断。
A.判断联项分别相同B.量项分别相同C.主、谓项分别相同D.判断的结构分别相同4.若断定SAP和SEP都假,则( )A.违反同一律B.违反矛盾律C.违反排中律D.不违反普通逻辑的基本规律5、“革命者就是从事革命活动的人”,这个定义所犯的逻辑错误是()A、同语反复B、循环定义C、定义过宽D、定义过窄E、定义含混6.一个相容选言判断p∨q假,那么,一定为()A.p真q真B.p真q假C.p假q真D.p假q假7.“如果某行为是犯罪行为,则必是违法行为”,由此可知( )A.如果某行为不是犯罪行为,则不是违法行为B.如果某行为不是违法行为,则不是犯罪行为C.只有某行为是犯罪行为,才是违法行为D.只有某行为不是违法行为,才不是犯罪行为8.只有发烧才是患肺炎,小红发烧,所以她一定是患了肺炎。
以下各推理中与上述推理犯同样逻辑错误的是( )A.只有学习好,才有资格当三好生,我学习好,所以我一定有资格当三好生。
B.只有学习好,才有资格当三好生,我有资格当三好生,所以我一定学习好。
2013样卷A《C语言程序设计》
C语言程序设计样卷A一、单选题(每小题2分,共40分)1.下面程序的输出是(B)。
main( ){ int x = 023;printf( "%d\n",--x);}A.17B.18C.23D.242.在C语言中,设int型变量占2个字节,则不正确的int类型常数是(A)。
A.62768B.12C.037D.0xa3.当a=1,b=2,c=3时,执行以下语句后a,b,c的值分别是(D )。
if(a>c)b=a;a=c;c=b;A.3,2,1B.1,2,3C.3,1,1D.3,2,24.以下叙述中正确的是(B)。
A.函数的定义可以嵌套,但函数的调用不可以嵌套B.函数的定义不可以嵌套,但函数的调用可以嵌套C.函数的定义和函数的调用均不可以嵌套D.函数的定义和函数的调用均可以嵌套5.以下叙述中不正确的是(B)。
A.在函数中,通过return语句获得返回值B.在函数中,如果没有return语句则不带回返回值C.在函数中,可以有多条return语句D.在C中,调用函数不必在一条独立的语句中完成6.若已定义:int a[9],*p=a;并在以后的语句中未改变p的值,不能表示a[1]地址的表达式为(C)。
A.p+1B.a+1C.a++D.++p7.下面程序的输出是( A )。
main( ){ int a[10]={1,2,3,4,5,6,7,8,9,10},*p=a;printf("%d\n",*(p+2));}A.3B.4C.1D.28.执行下面程序中的输出语句后,a的值是(C)。
main( ){ int a;printf("%d\n",(a=3*5,a*4,a+5));}A.65B.20C.15D.109.下面程序的输出是(C)。
main ( ){ int a = - 1, b = 4, k;k = (a++ <=0)&&(! (b-- <= 0));printf("%d %d %d \n",k,a,b);}A.0 0 3B.0 1 2C.1 0 3D.1 1 210.以下程序的输出结果是(A)。
2014年职称英语(综合类)A级真题试卷(题后含答案及解析)
2014年职称英语(综合类)A级真题试卷(题后含答案及解析)题型有:1. 词汇选项 2. 阅读判断 3. 概括大意与完成句子 4. 阅读理解 5. 补全短文6. 完形填空词汇选项(第1-15题,每题1分,共15分)下面每个句子中均有1个词或短语在括号中,请为每处括号部分的词汇或短语确定1个意义最为接近选项。
1.There was an inclination to treat geography as a less important subject.A.pointB.tendencyC.resultD.finding正确答案:B解析:本句意思:曾经有一种倾向认为地理是一门次要的学科。
inclination 意思为“倾向,趋势”,与tendency(趋势,倾向)意思相近。
point论点,观点,要点;resulf后果,结果;finding调查发现,调查结果。
2.New secretaries came and went with monotonous regularity.A.amazingB.depressingC.predictableD.dull正确答案:D解析:本句意思:秘书不停地更换,令人厌烦。
monotonous意思为“单调乏味的”,与dull(枯燥无味的,令人生厌的)意思相近。
amazing令人惊奇的;depressing令人沮丧的;predictable可预见的。
3.The committee was asked to render a report on the housing situation.A.furnishB.copyC.publishD.summarize正确答案:A解析:本句意思:委员会要提交一份有关住房情况的报告。
render意思为“递交,提交”,与furnish(提供)意思相近。
copy复制,复印;publish出版,发行;summarize总结,概括。
4.The group does not advocate the use of violence.B.regulateC.opposeD.support正确答案:D解析:本句意思:该团体不支持使用暴力。
零部件09年数控铣试题-A卷含答案
东风汽车零部件有限公司第二届员工职业技能大赛理论知识竞赛样卷职业(工种):数控铣工科目:理论知识注意事项1.请在试卷的标封处填写您的工作单位、姓名和准考证号2.请仔细阅读题目,按要求答题;保持卷面整洁,不要在标封区内填写无关内容一.理论知识部分(100分,折合为预赛40分)一)判断题(将判断结果填入括号中。
正确的填“√”,错误的填“×”。
每小题0.5分,共15分)1.GOO和G01的运行轨迹不一定全部一样,但速度一样。
(×)2. 当用G02/G03指令,对被加工零件进行圆弧编程时,圆心坐标I、J、K为圆弧中心到圆弧起点所作矢量分别在X、Y、Z坐标轴方向上的分矢量(矢量方向指向圆心)。
(√)3. 交互式图形自动编程是以CAD为基础,采用编程语言自动给定加工参数与路线,完成零件加工编程的一种智能化编程方式。
(×)4. 内轮廓加工中,在G41或 G42的起始程序中刀具可以拐小于90º的棱角。
(×)5. F、M指令都是模态指令。
(√)6. FANUC系统中,G84螺纹循环加工指令中,F值是每转进给指令。
(×)7. 若两个零件的实际尺寸相等,则其作用尺寸也相等。
(×)8. 加工完的零件,其实际尺寸越接近于基本尺寸,合格的可能性就越高。
(×)9. 选择公差等级的高低,主要决定于生产条件。
(×)10.硬质合金是现代高速切削最基本的刀具材料。
(√)11. 若切削用量小,工件表面没有硬皮,铣床有间隙调整机构,采用顺铣较有利(√)。
12.同一尺寸方向上的粗基准,一般只使用一次。
(√)13.数控机床上,零件的加工尺寸由程序控制,所以数控机床的几何精度对零的加工精度影响很小。
(×)14.大批量生产简单零件适合在数控铣床上加工。
(×)15.脉冲当量值很大,则数控机床加工精度好。
(×)16. 固定循环中没有指令X、Y、Z中的任一个及R值时,程序不能执行。
人教版高中英语选择性必修第四册综合检测(A卷)含答案
综合检测(A卷)(时间:120分钟满分:150分)第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对A.Look for a job.B.Take classes.A.To London.B.To Toronto.A.In an airplane.B.In a boat.A.A tree fell on it.B.Someone stole it.(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6、7题。
B.No.14.C.No.6.A.Where to change buses.B.The ticket price.听第7段材料,回答第8、9题。
A.Make snowballs.B.Go skating.’s the weather like today?A.Snowy and cold.B.Cloudy and windy.听第8段材料,回答第10至12题。
A.On Wednesday.B.On Saturday.C.On Friday.B.$815.C.$425.’s journey?A.Drinking is not allowed.B.A lunch will be served.听第9段材料,回答第13至16题。
A.For one week.B.For ten days.B.Tomorrow.C.Uncertain.’s the doctor’s suggestion for the woman?A.To have medical checks regularly.B.To take the medicine every day.A.In a few days.B.In a long time.听第10段材料,回答第17至20题。
05-08中华人民共和国史样卷、答案
10.1984年10月中共十二届三中全会后,农村改革进入第二步,重点调整农村产业结构,大力发展商品经济。()
三、多项选择题(从下列各题5个备选答案中选出2至5个正确答案,并将正确答案的号码写在题干后的括号内。答案选错或未选全者,该题无分。每题2分,共10分)
周恩来的纠“左”努力,是经“二月抗争”后又一次对“文革”错误的抵制和斗争,曾使各方面工作一度出现转机。但不久被江青一伙煽起的所谓“反右倾回潮”所打断。(1分)
八、材料分析题(10分)
1.指北京大学哲学系聂元梓、宋一秀等7人1966年5月25日写的题为《宋硕、陆平、彭佩云在文化大革命中究竟干些什么?》。(2分)
(3)根据社会主义建设的需要,提出在国家政治生活中开展反对官僚主义的斗争,进一步扩大社会主义民主,健全社会主义法制。(2分)
(4)根据党的地位的变化和新形势。新任务的要求,着重提出加强执政党建设的问题。特别提出了坚持民主集中制,坚持集体领导原则。反对个人崇拜、个专断等问题。(2分)
八大的路线是正确的。为新时期社会主义事业的发展和党的建设指明了方向,为探索中国社会主义建设道路作出了可贵的探索。(2分)
2.试述周恩来在1971年对纠“左”所作的努力。
九·一三事件后,周恩来在毛泽东支持下主持中央日常工作,为纠正“文革”中的“左”倾错误进行了大量工作。
首先,把正确地提出要批判极“左”思潮和无政府主义的意见,初步澄清了人们对林彪事件的认识。(2分)
其次,按照毛泽东的有关指示,努力抓紧为在“文革”中受到迫害的老干部落实政策,解放了一批老干部。(2分)
六、简答题(每题5分,共15分)
1.简述“一五”期间形成的经济体制的特征。
计算机组成原理样卷和参考答案
题号一二三四合计分数阅卷人一、单选题(每题2分.共30分)1 冯.诺依曼计算机结构的核心思想是:_____ 。
A 二进制运算B 有存储信息的功能 C运算速度快 D 存储程序控制2 计算机硬件能够直接执行的只有_____ 。
A 机器语言B 汇编语言C 机器语言和汇编语言D 各种高级语言3 零的原码可以用哪个代码来表示:_____ 。
A 11111111B 10000000C 01111111D 11000004 某数在计算机中用8421码表示为 0111 1000 1001 .其真值为_____。
A 789B 789HC 1929D 11110001001B 5目前在小型和微型计算机里最普遍采用的字符编码是_____。
A BCD码B 十六进制代码C AS CⅠⅠ码D 海明码6 当-1<x<0时.【x】原=:______。
A 1-xB xC 2+xD (2-2-n) -︱x ︳7 执行一条一地址的加法指令需要访问主存______次。
A 1B 2C 3D 48 在寄存器间接寻址中.操作数应在______中。
A 寄存器B 堆栈栈顶C 累加器D 主存单元9 在串行进位的并行加法器中.影响加法器运算速度的关键因素是:______。
A 门电路的级延迟B 元器件速度 C进位传递延迟 D 各位加法器速度的不同10 运算器虽由许多部件组成.但核心部件是______。
A 算术逻辑运算单元B 多路开关C 数据总线 D累加寄存器11在浮点数编码表示中______在机器中不出现.是隐含的。
A. 阶码B.符号 C 尾数 D 基数12 下列关于RISC的叙述中.错误的是:______。
A RISC 普遍采用微程序控制器B RISC 大多数指令在一个时钟周期内完成C RISC 的内部通用寄存器数量相对CISC少D RISC 的指令数、寻址方式和指令格式种类相对CISC少13计算机主频的周期是指______。
A 指令周期B 时钟周期C CPU周期D 存取周期14 冯.诺依曼计算机中指令和数据均以二进制形式存放在存储器中.CPU区分它们的依据是______。
《运筹学》 期末考试 试卷A 答案
《运筹学》试题样卷(一)一、判断题(共计10分,每小题1分,对的打√,错的打X )1. 无孤立点的图一定是连通图。
2. 对于线性规划的原问题和其对偶问题,若其中一个有最优解, 另一个也一定有最优解。
3. 如果一个线性规划问题有可行解,那么它必有最优解。
4.对偶问题的对偶问题一定是原问题。
5.用单纯形法求解标准形式(求最小值)的线性规划问题时,与0>j σ对应的变量都可以被选作换入变量。
6.若线性规划的原问题有无穷多个最优解时,其对偶问题也有无穷 多个最优解。
7. 度为0的点称为悬挂点。
8. 表上作业法实质上就是求解运输问题的单纯形法。
9. 一个图G 是树的充分必要条件是边数最少的无孤立点的图。
二、建立下面问题的线性规划模型(8分)某农场有100公顷土地及15000元资金可用于发展生产。
农场劳动力情况为秋冬季3500人日;春夏季4000人日。
如劳动力本身用不了时可外出打工,春秋季收入为25元 / 人日,秋冬季收入为20元 / 人日。
该农场种植三种作物:大豆、玉米、小麦,并饲养奶牛和鸡。
种作物时不需要专门投资,而饲养每头奶牛需投资800元,每只鸡投资3元。
养奶牛时每头需拨出1.5公顷土地种饲料,并占用人工秋冬季为100人日,春夏季为50人日,年净收入900元 / 每头奶牛。
养鸡时不占用土地,需人工为每只鸡秋冬季0.6人日,春夏季为0.3人日,年净收入2元 / 每只鸡。
农场现有鸡舍允许最多养1500只鸡,牛栏允许最多养200头。
三种作物每年需要的人工及收入情况如下表所示:试决定该农场的经营方案,使年净收入为最大。
三、已知下表为求解某目标函数为极大化线性规划问题的最终单纯形表,表中54,x x 为(1)写出原线性规划问题;(4分) (2)写出原问题的对偶问题;(3分)(3)直接由上表写出对偶问题的最优解。
(1分) 四、用单纯形法解下列线性规划问题(16分)3212max x x x Z +-=s. t. 3 x 1 + x 2 + x 3 ≤ 60 x 1- x 2 +2 x 3 ≤ 10 x 1+ x 2- x 3 ≤ 20 x 1, x 2 , x 3 ≥0五、求解下面运输问题。
大学英语A样卷[已调整格式]
大学英语(A)模拟试卷Information for the Examinees:This examination consists of FOUR parts. They are:Section I Reading Comprehension (30 points, 25 minutes)Section II Vocabulary and Grammar (40 points, 25 minutes)Section III Translation (10 points, 10 minutes)Section IV Writing (20 points, 30 minutes)The total score for this examination is 100. The time allowed for this examination is 90 minutes.Section I: Reading Comprehension [30 points]Part 1: Questions 1-5 are based on this part. (15 points)Read the following passage and choose the best answer from A, B, C and D.Most young people enjoy some form of physical activity. It may be walking, cycling or swimming, or in winter, skating or skiing. It may be game of some kind, football, hockey, golf, or tennis. It may be mountaineering.Those who have a passion for climbing high and difficult mountains are often looked upon with astonishment. Why are men and women willing to suffer cold and hardship, and to take risks on high mountains? This astonishment is caused probably by the difference between mountaineering and other forms of activity to which men give their leisure.Mountaineering is a sport and not a game. There are no man-made rules, as there are for such games as golf and football. There are, of course, rules of a different kind which it would be dangerous to ignore, but it is this freedom from man-made rules that makes mountaineering attractive to many people. Those who climb mountains are free to use their own methods.If we compare mountaineering and other more familiar sports, we might think that one big difference is that mountaineering is not a 'team game'. We should be mistaken in this. There are, it is true, no 'matches' between 'teams' of climbers, but when climbers are on a rock face linked by a rope on which their lives may depend, there is obviously teamwork.The mountain climber knows that he may have to fight forces that are stronger and more powerful than man. He has to fight the forces of nature. His sport requires high mental and physical qualities. A mountain climbercontinues to improve in skill year after year. A skier is probably past his best by the age of thirty, and most international tennis champions are in their early twenties. But it is not unusual for man of fifty or sixty to climb the highest mountains in Alps. They may take more time than younger men, but they probably climb with more skill and less waste of effort, and they certainly experience equal enjoyment.1、Mountaineering involves ______.A:coldB:hardshipC:physical riskD:all of the above答案: D2、The difference between a sport and a game has to do with the kind of ______.A:activityB:rulesC:uniformD:participants答案: B3、Mountaineering can be called a team sport because ______.A:it is an Olympic eventB:teams compete against each otherC:mountaineers depend on others while climbingD:there are 5 climbers on each team答案: C4、Mountaineers compete against ______.A:natureB:each otherC:other teamsD:international standards答案: A5、Choose the best title for the passage ______.A:mountaineering is different from golf and footballB:mountaineering is more attractive than other sportsC:mountaineeringD:mountain climbers答案: CPart 2: Questions 6- 10 are based on this part. (15 points)Remember global warming? Back in December, the threat of climate change was thundering and the rich countries agreed to cut their carbon-dioxide and other green-house-related emissions. Since then, interest has cooled markedly, and many European countries are already running away from the promises they made so loudly a few months ago. Butthere has been much talk, and a bit of action, to encourage renewable energies such as wind, hydro, solar and all living organisms. These emit no greenhouse gases, but tend to cost more than coal, oil or gas.The better, simpler idea is to remember that the easiest way to reduce something is to tax it - in this case, by taxing the carbon content power. The dirtier the power, the more tax it would pay. So dirty coal would be more expensive than clean coal, which would see its price rise in relation to oil, which would be more expensive compared with gas, which would lose some of its price advantage over renewables.Unless a carbon tax was so huge as to be economically crippling, it would not remove the price differential between all renewables and fossil fuels. But it would narrow that gap, by fixing the differing environmental costs into the price - a useful principle in itself. It would also give renewable producers a strong incentive to cut costs, and fossil-fuel suppliers the motivation to clean their products.Precedents suggest strongly that a carbon tax would be effective. But the disadvantage to carbon tax is political. After almost a decade of trying, the European Union gave up an attempt at a European carbon tax last year. Germany's ruling coalition is fighting against a proposed energy tax. In America, politicians believe that even mentioning the notion is certain death. But many of the political objections could be met if a carbon tax were made up for the loss elsewhere, for example by lowering payroll or sales taxes. There is always suspicion when governments come up with clever new ways to tax, and rightly so. The response to that suspicion should be to win the argument, not to abandon it.6、According to the passage, the easiest way to remove global warming is ___________.A:to encourage people to use renewable energiesB:to cut down the cost of wind, hydro, solar and all living organisms C:to force people to pay more tax for the carbon content of power D:to talk less but act more答案: C7、The standard of paying tax was _________.A:that the more carbon content of power it contained, the higher tax one would payB:that oil would be more expensive than clean coalC:that renewables would be most expensive of allD:in the order that renewables are the most expensive while clean coal the cheapest答案: A8、We can infer from the passage that carbon tax ___________.A:may not be as effective as people expectB:has encouraged renewable producers to cut costsC:has reduced consumption of the carbon content energy successfully D:couldn't be that effective if fossil fuels would not be forbidden 答案: A9、The underlined word "crippling" (Para. 3) most probably means_________.A:greatly increasingB:seriously weakeningC:sharply decliningD:abruptly halting答案: B10、The reason why many countries stopped introducing carbon tax eventually was mainly that ___________.A:governments had tried to put it into effect for many years but with no obvious resultB:if one country made up the loss by paying the carbon tax, other countries would follow itC:governments were afraid of being suspected if they adopted the new taxD:governments had been discussing what to do with carbon tax for a long time, but they didn’t believe it themselves.答案: CSection II: Vocabulary and Grammar [30 points]Part 1: Questions 11- 20 are based on this section. (10 points)Read the following sentences and choose the best answer from A, B, C andD.11、The girl immediately shut the window to _____the rain.A:keep outB:keep downC:keep upD:keep back答案: A12、_____five hundred people are believed to have drowned.A:As many asB:As much asC:So many asD:So much as答案: A13、The child was _______ by his bad grades and did not want to go to school. A:discouragedB:encouragedC:delightedD:disagreed答案: A14、Your ill treatment of disputes would put other people in a negative frame of ____.A:mindB:ideaC:intentionD:wish答案: A15、We all believe that it'd be hard for him to __________extra responsibilities now.A:take apartB:take upC:take onD:take back答案: C16、It is with her support _____he won the Nobel Prize.A:whichB:thatC:whatD:when答案: B17、I wish you wouldn't spend so much time ____TV.A:to watchB:watchC:watchedD:watching答案: D18、When the girl heard the news, she could do nothing but ________ back home.A:goingB:wentC:to goD:go答案: D19、It is not uncommon for ________ problems of communication between old and young.A:there to beB:there beingC:there to beingD:there be答案: A20、They ________ thankful to have the opportunity to further their studies.A:would like to beB:ought to beC:would rather beD:had better be答案: BPart 2: Questions 21 - 30 are based on this section. (20 points)Read the following passage and fill in each blank by choosing the best answer from A, B, C and D.Years ago in Scotland, the Clark family had a dream. Clark and his wife worked and saved, __21__ plans for their nine children and themselves to move to the United States. It __22__them many years, but finally they saved enough money. They got passports and reservations on a new liner (游轮) to that country.The entire family was __23__ about their new life. __24__, a week before their departure, the youngest son was bitten by a dog. The doctor healed the boy; but in case of rabies (狂犬病), the boy had to be separated and observed for two weeks. The family's __25__ was dashed. They would not be able to make the trip to __26__ as they had planned. Standing on the dock to watch the ship leave, the father shed tears of disappointment and cursed both his son and God for their __27__.Five days later, the __28__ news spread throughout Scotland - the mighty Titanic had sunk. The unsinkable ship had sunk, taking hundreds of lives with it. When Mr. Clark heard the news, he hugged his son and thanked him __29__ saving the family. He also thanked God for saving their lives and turning __30__ he had felt was a tragedy into a blessing. Although we may not always understand, all things happen for a reason.21、A:makingB:doingC:playingD:finding答案: A22、A:paidB:gaveC:spendD:took答案: D23、A:excitedB:worriedC:nervousD:tired答案: A24、A:BecauseB:HoweverC:ThereforeD:Besides答案: B25、A:partyB:dreamC:businessD:house答案: B26、A:ScotlandB:AfricaC:AustraliaD:America答案: D27、A:responsibility B:discomfortC:misfortuneD:courage答案: C28、A:happyB:similarC:funnyD:tragic答案: D29、A:toB:forC:withD:in答案: B30、A:thatB:whichC:whatD:who答案: CSection III: Translation [20 points]31、中国是一个人口众多的发展中国家。
样卷A《C语言程序设计》
C语言程序设计样卷A一、单选题(每小题2分,共40分)1.下面程序的输出是(B)。
main( ){ int x = 023;printf( "%d\n",--x);}A.17B.18C.23D.242.在C语言中,设int型变量占2个字节,则不正确的int类型常数是(A)。
A.62768B.12C.037D.0xa3.当a=1,b=2,c=3时,执行以下语句后a,b,c的值分别是(D )。
if(a>c)b=a;a=c;c=b;A.3,2,1B.1,2,3C.3,1,1D.3,2,24.以下叙述中正确的是(B)。
A.函数的定义可以嵌套,但函数的调用不可以嵌套B.函数的定义不可以嵌套,但函数的调用可以嵌套C.函数的定义和函数的调用均不可以嵌套D.函数的定义和函数的调用均可以嵌套5.以下叙述中不正确的是(B)。
A.在函数中,通过return语句获得返回值B.在函数中,如果没有return语句则不带回返回值C.在函数中,可以有多条return语句D.在C中,调用函数不必在一条独立的语句中完成6.若已定义:int a[9],*p=a;并在以后的语句中未改变p的值,不能表示a[1]地址的表达式为(C)。
A.p+1B.a+1C.a++D.++p7.下面程序的输出是( A )。
main( ){ int a[10]={1,2,3,4,5,6,7,8,9,10},*p=a;printf("%d\n",*(p+2));}A.3B.4C.1D.28.执行下面程序中的输出语句后,a的值是(C)。
main( ){ int a;printf("%d\n",(a=3*5,a*4,a+5));}A.65B.20C.15D.109.下面程序的输出是(C)。
main ( ){ int a = - 1, b = 4, k;k = (a++ <=0)&&(! (b-- <= 0));printf("%d %d %d \n",k,a,b);}A.0 0 3B.0 1 2C.1 0 3D.1 1 210.以下程序的输出结果是(A)。
英语a考试试题及答案
英语a考试试题及答案英语A考试试题及答案一、阅读理解(共20分)阅读下列短文,回答1-5题。
短文AIn today's fast-paced world, the ability to communicate effectively is more important than ever. English has become a global language, a bridge that connects people from different cultures and backgrounds. As a result, mastering English is not just a matter of academic achievement; it is a key to unlocking opportunities in various fields such as business, education, and technology.1. What is the purpose of the passage?A. To emphasize the importance of English.B. To encourage people to learn different languages.C. To discuss the history of the English language.D. To compare English with other global languages.答案:A2. What does the author suggest about English?A. It is the only global language.B. It is the easiest language to learn.C. It is a language that facilitates communication globally.D. It is a language limited to academic circles.答案:C短文BThe rise of social media platforms has dramatically changed the way we interact with one another. People now have the ability to connect with friends and family, share their experiences, and even build businesses, all from the convenience of their smartphones or computers. However, this digital revolution has also brought about concerns regarding privacy and the spread of misinformation.3. What is the main topic of the passage?A. The impact of technology on privacy.B. The benefits of social media for businesses.C. The evolution of communication through social media.D. The negative effects of social media on society.答案:C4. What concern does the author express about social media?A. It is too time-consuming.B. It can be a source of misinformation.C. It is only useful for personal interactions.D. It is not accessible to everyone.答案:B5. What can be inferred from the passage?A. Social media is a new phenomenon.B. Social media has no positive aspects.C. The author is against the use of social media.D. Social media has both positive and negative aspects.答案:D二、词汇与语法(共30分)用括号中所给词的适当形式填空。
【数学省样卷】五年级下册2018省样本卷A及答案
的面积最大是( A )平方厘米。
A.12.56
B.25.12
三、写出每组数的最大公因数和最小公倍数
C.50.24
9 和 12
5和7
24 和 8
Байду номын сангаас
最大公因数是( 3 ) 最大公因数是( 1 ) 最大公因数是( 8 )
最小公倍数是( 36 ) 最小公倍数是( 35 ) 最小公倍数是( 24 )
四、计算下面各题(怎样算简便就怎样算)
3.一个数的最大因数是 18,最小倍数也是 18,这个数是( )。把这个数
分解质因数,结果是(
)。
4.A、B 都表示自然数,A 是 B 的 1 。A 和 B 的最大公因数是( 4
),最小
公倍数是( )。
5.用长 8 厘米、宽 6 厘米的长方形纸片拼一个正方形,拼成的正方形的边长
至少是( )厘米。这个正方形里包含有(
二、选择正确答案的序号填在括号里(π取 3.14)
1.在 x÷□=1.6 中,当 x=1.6 时,□里应填( C )。
A.2.56
B.1.6
C.1
2. 因为 5×6=30,所以 6 是 30 的( A )。
A.因数
B.质因数
C.倍数
3.一节课的时间是 2 小时。这里的“ 2 ”是把( B )看作单位“1”平均分成 3
阴影部分面积拼起来是两个圆。圆的半径是 1.2 厘米。 3.14×1.2×1.2×2=9.0432(平方厘米) 答:横截面的面积是 9.0432 平方厘米。
6.甲、乙两个城市去年各月的平均气温如下图:
(1)根据图中的数据,这两个城市 ( 3 )月份的平均气温相差最 大,( 7 )月份的平均气温相 差最小。
汽车综合故障诊断与维修期末考试试卷
笔试课程考试样卷考试课程:汽车综合故考核性质:考试课考试方式:闭卷障诊断与维修试卷套号: 01试卷类型:A卷学年学期:考试时间:120分钟满分:100分姓名;学号:班级:一、选择题。
(从下列各题备选答案中选出正确答案,并将其代号写在相应位置处。
答案错选或未选者,该题不得分。
第1-10题为单选,每个2分;第11-15题为多选,每个3分。
共35分。
)1.以下能用来表征发动机气缸密封性的诊断参数是( B )。
A.气门间隙B.气缸压力C.点火提前角D.配气相位2.将电动汽油泵置于汽油箱内部的目的是( C )。
A.便于控制B.降低噪声C.防止气阻D.防止短路故障3.当进气歧管内真空度增大时,真空式汽油压力调节器将调节汽油压力( B )。
A.提高B.降低C.保持不变D.以上都不正确4.对喷油量起决定性作用的是( A )。
A.空气流量计B.水温传感器C.氧传感器D.爆燃传感器5.电控汽油系统的ECU能够做所有以下工作,除了( D )。
A.接收输入数据B.按顺序处理输入数据并监控输出作用C.控制内燃机的运行状况D.存储数据和信号6.下列选项中,( D )不属于汽车转向信号系统。
A.转向灯B.电喇叭C.制动灯D.大灯7.在夏季行车时,外界气温高,轮胎散热较慢,温度较高,已发生爆胎现象,因此,轮胎气压应( C )。
A.低一点B.高一点C.保持规定的气压标准D.途中气压过高可放掉一点8.汽车大灯一侧亮,另一侧暗,说明( B )。
A.变光开关接触不良B.大灯暗的这一侧搭铁不良C.车灯开关故障D.灯泡使用时间过长9.在发动机冷起动时,响声很明显,而温度一旦升高,响声即减弱或消失,一般是( C )。
A.轴承响B.连杆敲缸响C.活塞敲缸响D.皮带响10.甲认为气缸的最大磨损通常发生在活塞销轴线方向;乙认为气缸的锥度可以用活塞环和塞尺测量得到。
试问谁正确?( D )A.甲正确B.乙正确C.两人均正确D.两人均不正确11.不能有效抑制NOx生成的辅助控制系统是( ACDEF )。
1+X证书职业技能等级证书云计算平台运维与开发认证(中级)样卷A——附答案
C.瀑布模型
D.敏捷开发模型
22.下面关于项目立项启动表述正确的是?(ABCD)(10分)
A.项目启动阶段,将项目的目标、规划与任务进行完整地定义和阐述,成一份完成的项目工作任务书
B.项目启动会是宣导项目重要性的关键节点,必须就项目目标、上线条件、管理权限和项目干系人列表达成共识
C.项目启动阶段必须确定明确的责任人
D.般的缩容过程主要步骤包括禁止参与调度、节点容器撤离和移除计算节点
39.IaaS平台中拥有下面哪些项目_____。 (BC)(10分)
A.ERP
B.Openstack
C.Cloudstack
D.CRM
40.Python中使用requests第三方库的优点在于_____。(ABCD) (10分)
A. 持使用Cookie保持会话
C.服务市场镜像
D.个人镜像
35.以下关于弹性伸缩特点描述正确的有哪几项?(AB)(10分)
A.弹性伸缩可以根据您的业务需求和策略,自动调整 CVM 计算资源
B.弹性伸缩的计费方式为按云服务器所使用的资源来计费
C.弹性伸缩的计费方式为按年度计费
D.以上皆无
36.下列关于腾讯云负载均衡说法正确的是?(ACD)
D.以上都不正确
27.哪些是zookeeper主要角色?(ABC)(10分)
A.领导者
B.学习者
C.客户端
D.服务端
28.Kafka应用场景有哪些?(ABCD)(10分)
A.日志收集
B.消息系统
C.运营指标
D.流式处理
29.制定银行容器平台的需求时,建议考虑包括的方面有哪些?(ABCD)(10分)
A.管理大规模容器集群能力
2023年物理 (军队文职)样卷及答案
物理 (军队文职)样卷(总分100分,考试时长90分钟)一、单项选择题(每小题2 分,共 100分)1、在狭义相对论中,下列说法中哪些是正确的?()(1)一切运动物体相对于观察者的速度都不能大于真空中的光速(2)质量、长度、时间的测量结果都随物体与观察者的相对运动状态而改变(3)在一惯性系中发生于同一时刻不同地点的两个事件在其他一切惯性系中也是同时发生的(4)惯性系中的观察者观察一个与他做匀速相对运动的时钟时,会看到这个时钟比其他相同的时钟走得慢些A、(1)(2)(3)B、(1)(2)(4)C、(1)(3)(4)D、(2)(3)(4)【答案】B【解析】在一惯性系中发生于同一时刻不同地点的两个事件在其他一切惯性系中“同时”是相对的。
2、N型半导体中杂质原子所形成的局部能级(也称施主能级),在能带中应处于()。
A、满带中B、导带中C、禁带中,但接近满带顶D、禁带中,但接近导带底【答案】D【解析】N型半导体也称为电子型半导体,自由电子主要由杂质原子提供,空穴由热激发形成。
掺入的杂质越多,多子(自由电子)的浓度就越高,导电性能就越强。
杂质原子所形成的局部能级(也称施主能级),在能带中处于禁带但接近导带底。
3、以下电磁波按波长大小排序正确的是()。
A、无线电波、紫外线、红外线、X射线、γ射线B、无线电波、红外线、紫外线、γ射线、X射线C、无线电波、X射线、γ射线、红外线、紫外线D、无线电波、红外线、紫外线、X射线、γ射线【答案】D【解析】电磁波按照波长从大到小的顺序,可分为:无线电波、光波(红外线、可见光、紫外线)、X射线、γ射线等。
4、并联比管的流动特征是:A、各分管流量相等B、总流量等于各分管的流量和,且各分管水头损失相等C、总流量等于各分管的流量和,且各分管水头损失不等D、各分管测压管水头差不等于各分管的总能头差【答案】B5、机械波波动方程为y=0.03cos6π(t+0.01x),则( )。
A、其振幅为0.03mB、其周期为1/6sC、其波速为10m/sD、波沿x轴正向传播【答案】A【解析】由波动方程可知振幅为0.03m,周期T=2π/ω=1/3s,波长λ=1/0.03m,波速u=λ/T=100m/s,波沿x轴负向传播。
2023年运筹学期末考试试卷A答案
一、判断题(合计10分,每题1分,对旳打√,错旳打X )1. 无孤立点旳图一定是连通图。
2. 对于线性规划旳原问题和其对偶问题,若其中一种有最优解, 另一种也一定有最优解。
3. 假如一种线性规划问题有可行解,那么它必有最优解。
4.对偶问题旳对偶问题一定是原问题。
5.用单纯形法求解原则形式(求最小值)旳线性规划问题时,与>j σ对应旳变量都可以被选作换入变量。
6.若线性规划旳原问题有无穷多种最优解时,其对偶问题也有无穷 多种最优解。
7. 度为0旳点称为悬挂点。
8. 表上作业法实质上就是求解运送问题旳单纯形法。
9. 一种图G 是树旳充足必要条件是边数至少旳无孤立点旳图。
10. 任何线性规划问题都存在且有唯一旳对偶问题。
某农场有100公顷土地及15000元资金可用于发展生产。
农场劳动力状况为秋冬季3500人日;春夏季4000人日。
如劳动力自身用不了时可外出打工,春秋季收入为25元 / 人日,秋冬季收入为20元 / 人日。
该农场种植三种作物:大豆、玉米、小麦,并喂养奶牛和鸡。
种作物时不需要专门投资,而喂养每头奶牛需投资800元,每只鸡投资3元。
养奶牛时每头需拨出1.5公顷土地种饲料,并占用人工秋冬季为100人日,春夏季为50人日,年净收入900元 / 每头奶牛。
养鸡时不占用土地,需人工为每只鸡秋冬季0.6人日,春夏季为0.3人日,年净收入2元 / 每只鸡。
农场既有鸡舍容许最多养1500只鸡,牛栏容许最多养200头。
三种作物每年需要旳人工及收入状况如下表所示:试决定该农场旳经营方案,使年净收入为最大。
三、已知下表为求解某目旳函数为极大化线性规划问题旳最终单纯形表,表中54,x x 为松弛变量,问题旳约束为 ⎽ 形式(共8分)(1)写出原线性规划问题;(4分) (2)写出原问题旳对偶问题;(3分)(3)直接由上表写出对偶问题旳最优解。
(1分) 四、用单纯形法解下列线性规划问题(16分)3212max x x x Z +-=s. t. 3 x 1 + x 2 + x 3 ≤ 60 x 1- x 2 +2 x 3 ≤ 10 x 1+ x 2- x 3 ≤ 20 x 1, x 2 , x 3 ≥0五、求解下面运送问题。
unit2单元测试A卷 (全国卷地区使用)(含答案)高二英语课后练(人教版2019选择性必修第三册)
答卷时应注意事项1、拿到试卷,要认真仔细的先填好自己的考生信息。
2、拿到试卷不要提笔就写,先大致的浏览一遍,有多少大题,每个大题里有几个小题,有什么题型,哪些容易,哪些难,做到心里有底;3、审题,每个题目都要多读几遍,不仅要读大题,还要读小题,不放过每一个字,遇到暂时弄不懂题意的题目,手指点读,多读几遍题目,就能理解题意了;容易混乱的地方也应该多读几遍,比如从小到大,从左到右这样的题;4、每个题目做完了以后,把自己的手从试卷上完全移开,好好的看看有没有被自己的手臂挡住而遗漏的题;试卷第1页和第2页上下衔接的地方一定要注意,仔细看看有没有遗漏的小题;5、中途遇到真的解决不了的难题,注意安排好时间,先把后面会做的做完,再来重新读题,结合平时课堂上所学的知识,解答难题;一定要镇定,不能因此慌了手脚,影响下面的答题;6、卷面要清洁,字迹要清工整,非常重要;7、做完的试卷要检查,这样可以发现刚才可能留下的错误或是可以检查是否有漏题,检查的时候,用手指点读题目,不要管自己的答案,重新分析题意,所有计算题重新计算,判断题重新判断,填空题重新填空,之后把检查的结果与先前做的结果进行对比分析。
亲爱的小朋友,你们好!经过两个月的学习,你们一定有不小的收获吧,用你的自信和智慧,认真答题,相信你一定会闯关成功。
相信你是最棒的!Unit 2 Healthy Lifestyle单元素养评估A卷第一部分听力(共两节,满分30分)第二部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项,并在答题纸上将该项涂黑。
AResearchers say getting a good night’s sleep is probably the best tool for memory and learning. But short periods of sleep may help our brains work better, says a recent study on napping. And taking a nap may also help old adults fight off age-related memory loss.CDC, an American scientific organization, found that 50 to 70 million Americans have chronic(长期的) sleep disorders. So, someone who naps as a way of paying off a sleep debt may not experience the same improvements from napping as a well-rested person would. Also, that only children, the very old, sick or lazy people nap is not an uncommon opinion.Researchers recently looked at information provided by nearly 3,000 Chinese adults, aged 65 years or older, to learn if napping after a midday meal had any effect on the mental performance of the subjects.First, they asked the people if they napped and for how long. Then, based on their answers, researchers put them into four groups: non-nappers(0 min), short nappers(≤30 mins), moderate nappers(30-90 mins), and extended nappers(≥90 mins). Nearly 60% of the people said they did take a nap after lunch and that their naps lasted anywhere from 30 to 90 minutes. Most of the subjects said they napped for about an hour.The study found that people who took an hour-long nap did much better on mental tests than those who did not nap. The hour-long nappers also did better on the tests than those who napped for shorter and longer periods. In this study, it seemed that the most effective nap lasted for about an hour, but not much longer.Yet Doctor Michael Twery notes that an hour-long nap may be too long for young, healthy adults. 30 minutes is enough to remove the pressure to sleep and will help us feel more awake.1.What’s the main idea of this passage?A.Getting a good night’s sleep is probably the best tool for memory and learning.B.Getting rest during the middle of the day helps older adults’ brains work better.C.Taking a nap helps babies and young children learn better.D.Napping helps adults fight off age-related health problems.2.Among the following people who naps after lunch, who experiences the best improvement?A.A new mother with her baby crying for most of the night.B.A university student staying up late for the coming exams.C.A school guard working on the night shift.D.A retired teacher going to bed at 10 p.m.and rising at 6 a.m.3.A nap does better for healthy and young adults.A.30-minuteB.60-minuteC.70-minuteD.90-minute【语篇导读】本文是一篇说明文。
人教版高中英语必修5教师用书:Unit 4 阶段质量检测 A卷 学业水平达标 (含答案)
A卷学业水平达标(时间:120分钟满分:150分)第Ⅰ卷第一部分:听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
(Text 1)W:You look sleepy. What's the matter?M:I didn't sleep for the whole night because I had a long report to prepare for the president.W:You must be very tired now. You'd better go and get some sleep.1.What does the woman advise the man to do?A.She advises him to work hard at his lessons.B.She advises him to go to sleep.C.She advises him to stay there and wait.(Text 2)W:You should have been here ten minutes ago. The film has been on for ten minutes. It's a pity you missed the first part.M:I was about to leave my house when I had an unexpected visitor. We talked for some time. So I was a little late for the film. But it doesn't matter too much.2. Why was the man late for the film?A.Because he had an unexpected visitor.B.Because he had to take his son to his parents.C.Because his car broke down on the way.(Text 3)M:Those oranges look nice. How much are they?W:They are sixty cents a pound.3. How much are the oranges?A.6 cents a pound. B.16 cents a pound.C.60 cents a pound.(Text 4)W:I haven't seen Bob all day.M:Have you checked the lab? I wouldn't be surprised if he slept there.4. Where may Bob be?A.In the bedroom sleeping.B.In the office working.C.At the lab sleeping.(Text 5)W:Aren't you watching the movie on the television?M:It's not on until eight.5. When will the movie start?A.It's already on. B.It'll start at eight.C.It'll start after eight o'clock.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
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组成样卷A卷_答案
杭州电子科技大学学生考试卷(A)卷答案
一.单项选择题(20分,每题1分)
1.D 2. C 3. C 4. D 5. C
6. D
7. A
8. D
9. B 10. D
11.B 12. D 13. A 14. B 15. C
16.C 17. B 18. A 19. A 20. D
二.填空题(15分,每空1分)
1.控制器中有若干个专用寄存器,__IR _寄存器用来存放指令,PC 用来指出指令地址。
微程序控制器中微程序存放于控存(CM)。
2.半导体RAM通常分为SRAM和DRAM,主要区别在于:前者是用双稳态触发器来存储信息的,而后者是用极间电容来存储信息的,前者与后者相比,速度快,价格高。
3.从主存取出一条指令并执行完这条指令的时间,称为指令周期。
指令系统是指
一台计算机中所有机器指令的集合。
4.在微程序控制器中,指令译码器的作用是产生指令的微程序入口地址。
5.控制器由专用寄存器、指令译码器、时序系统、操作控制器构成,控制器的功能是取指令、分析指令、执行指令、处理特殊请求和异常情况。
6.微指令的格式可以分为水平型微指令和垂直型微指令,前者并行处理能力强,但微指令字长长。
三.计算题(18分)
1.(18分)设浮点数的格式为:阶码5位,包含一位符号位,尾数5位,包含一位
则按上述浮点数的格式:
①(2分)若数Z的浮点数的16进制形式为1ABH,求Z的十进制的真值。
[Z]浮=0,0110 1.01011 Z=-0.10101×2+6=-101010 Z=-42
②(4分)若(X)10 =15/32,(Y)10= -1.25,则求X和Y的规格化浮点数
表示形式。
X=0.01111 X=0.11110×2-1【X】浮=1,1111 0.11110
Y=-1.01 Y=-0.10100×2+1【Y】浮=0,0001 1.01100
③(5分)求(要求用补码计算,列出计算步骤)。
④(7分)求[X*Y](要求阶码用补码计算,尾数用补码BOOTH算法计算,列出计
算过程和算式)。
四.综合设计题(47分)
1.(20分)某机字长8 位,CPU地址总线16位,数据总线8位,存储器按字节编址,CPU 的控制信号线有:MREQ#(存储器访问请求,低电平有效),
R/W#(读写控制,低电平为写信号,高电平为读信号)。
试问:
(1)(2分)若该机主存采用16K×1位的DRAM芯片(内部为128×128阵列)构
成最大主存空间,若采用异步刷新方式,单元刷新周期为
2ms。
(2)(4分)若为该机配备2K×8位的Cache,每字块4字节,采用4路组相联映象,
Cache
1234H,则该地址映象到的Cache
(3)(4分)若CPU执行一段时间时,Cache完成存取的次数为2400次,主存完成的存取次数为100次,已知cache的存储周期为20ns,主存的存储周期为100ns。
则Cache/,Cache/主存系统的效率为
(4)(10分)若用若干个8K×4位的SRAM芯片形成24K×8位的RAM存储区域,起始地址为2000H,假设SRAM芯片有CS#(片选,低电平有效)和WE#(写使
能,低电平有效)信号控制端;试写出RAM的地址范围,并画出SRAM与CPU
的连接图(请标明SRAM芯片个数、译码器的输入输出线、地址线、数据线、控
制线及其连接)。
(5)
注意:除了HALT指令为单字指令外,其他指令均为双字指令;其中,SR为源寄存器号,DR为目的寄存器号,指令第二字为地址、数据或偏移量。
模型机结构如图1:(1)(
若(PC)=20H,变址寄存器(SI)=10H,则此时启动程序执行,问执行了几条
(2)(6分)该微程序控制器有28种微操作命令,采用直接控制法,有4个转移控制状态,采用译码形式编码,微指令格式中的下址字段8位,微指令格式如下,则操作控制字段和判别测试字段各有几位?控存的容量为多少(字数×字长)?
28位2位8位
控存的容量:256×38位
(3)(6分)模型机的某条指令的微程序流程图如图2所示,写出该条指令的功能、寻址方式、指令第二字的含义。
指令的功能:JMP指令,(PC)+DISP→PC
寻址方式:相对寻址
指令第二字的含义:相对偏移量
(4)(6分)写出上述SUB DR,[SI+ADDR]指令的微程序流程图。