基础5-8#楼褥垫层技术交底
基础达标三 (Units 5-8, 八年级上册)
基础达标三(Units 5—8, 八年级上册)一、单项选择(共15小题, 每小题1分,计15分)1. The wetlands are ______ home to a lot of wildlife, so they play an important role in protecting animals.A. aB.anC. theD. /2. What exciting news! Our school will provide the students ______ some new computers.A. fromB. withC. toD. for3. —Millie has trouble solving the Maths problem, doesn’t she? —Yes, she does. But she is too proud to ______ others’ help.A. acceptB. joinC. receiveD. attend4. —What do you want to be in the future? —I ______ be an engineer, but I’m not quite sure at present.A. mustB. mayC. needD. should5. Henry and his friends were playing basketball in the playground yesterday afternoon ______ it suddenly began to rain heavily.A. becauseB. afterC. whenD. while6. The old lady’s son left home when he was young and never came back. She wants to know whether he is ______ or dead.A. liveB. livingC. livelyD. alive7. —How many films did you watch during the May Day holiday? —______ . I went to the beach on vacation.A. NoB. NoneC. No oneD. Nothing8. Write down the questions you want to ask. ______ , you will forget some of them.A. MoreoverB. HoweverC. InsteadD. Otherwise9.To our great joy, more and more people try to do everything they can ______ wild animals these days.A. protectB. protectedC. to protectD. protecting10. —We plan to drive our car to Dalian next month. —Are you serious? It’s such a long way. What if the car ______ ?A. breaks outB. breaks downC. breaks intoD. breaks up11. After finishing all his work, my father felt so ______ that he fell ______ in the study.A. asleep; sleepyB. sleepy; asleepC. sleepy; sleepyD. asleep; asleep12. Pandas are very small ______ , but they can weigh as much as 80 kilos when they grow up.A. in factB. at lastC. as usualD. at birth13. “The song Yesterday Once More sounds pretty beautiful.” The sentence structure is ______ .A. S+VB. S+V+OC. S+V+PD. S+V+DO+OC14. —Jim, I called you at seven last night, but no one answered the phone. —I ______ a shower in the bathroom at that time.A. am takingB. was takingC. have takenD. took15. —I missed the beginning of Readers yesterday evening. —______ ! But you can watch it on the Internet at any time.A. What a pityB. No problemC. You’re rightD. That’s OK二、完形填空(共15小题, 每小题1分,计15分)I jumped up high in the air and landed in the sandpit. “3.55 metres!” the referee (裁判) ___1___ . The result was my best by then, but I was not ___2___ with it.I have been competing in the long jump since primary school, so for me, I was likely to succeed. But this time, ___3___ seemed far from me. After trying several times, I lost heart and wanted to ___4___ .As I reached the last round of the jump, my worry and self-doubt built up inside. It seemed that all my ___5___ had been meaningless. I stood at the starting line, my mind totally blank (空白的) and my hands ___6___ . I heard my classmates’ cheers ___7___ me, so I started running. I tried using my arms and shoulders to run faster, but my body started to show signs of tiredness.As the highlight of this term, this long-awaited sports event became my Waterloo. Accepting failure was the last thing I wanted. ___8___ my best friends came to comfort me, I couldn’t even say a word. They told me I had done a good job and that they were ___9___ me. These words were like warm wind, ___10___ away the dark clouds in my heart.___11___ this experience, I realize that failure is the most common thing in life. We meet different kinds of failures everywhere. Failure makes us better understand ___12___ and our disadvantages. And it can make us get ___13___ . That’s because it not only allows us to get ___14___ from it, but also makes us improve ourselves. What’s more, failure offers us a chance to ___15___ our bad feelings with friends, which can develop our friendships. This is what I’ve learned in the long jump.1. A. explained B. announced C. promised D. introduced2. A. satisfied B. patient C. strict D. careful3. A. stress B. truth C. victory D. peace4. A. give up B. stay out C. calm down D. cut in5. A. hopes B. efforts C. questions D. secrets6. A. soft B. dirty C. pretty D. wet7. A. above B. among C. around D. along8. A. Though B. Since C. If D. When9. A. angry with B. worried about C. proud of D. crazy about10. A. blowing B. throwing C. running D. pushing11. A. With B. Over C. Through D. On12. A. yourselves B. ourselves C. itself D. themselves13. A. stronger B. busier C. friendlier D. cleverer14. A. classes B. subjects C. lessons D. items15. A. mix B. share C. compare D. exchange三、阅读理解(共15小题, 每小题2分, 计30分)ALove animals and kids? Want to help protect animals and the natural world? Have some time to give? Then enroll in (加入) the interesting programme for teenagers in Saint Louis, Zoo ALIVE, and become a volunteer.What to doHelp the zoo workers plan weekend activities for children.Encourage the zoo visitors to take part in educational activities.Go on camping trips to explore nature and wildlife.Help with the zoo’s activities and plan your own project.Learn about the zoo, its animals, etc.Volunteer requirementsBe at least 15 years old.Be confident and responsible (负责任的).Have good communication skills.No experience is necessary, but you must be pleased to try new things.Attend a monthly meeting. (Usually held from 5 p.m. to 7:30 p.m. on the first Sunday of each month)Give your time for at least two activities per month for at least one year.Give us a call at 646-467X.The V olunteer Services is happy to share more information with you!1. Zoo ALIVE is the name of ______ .A. a zoo zooB. a website zooC. a meeting zooD. a programme2. V olunteers for Zoo ALIVE will plan ______ for children.A. camping trips zooB. weekend activities zooC. educational activities zooD. talks about environment3. l5-year-old Paul can’t enroll in Zoo ALIVE probably because ______ .A. he is too young zooB. he has no experience zooC. he likes trying new things zooD. he isn’t good at communicatingBPeter sat on the doorstep, thinking. All day he had been trying to come up with an idea for his school science fair project. He couldn’t think of an idea, and he was starting to feel nervous.Just then Peter heard some birds chirping (唧唧叫) in a tree.Peter raced into his house and went upstairs to look out of the window. Sure enough, a little brown bird had built its nest (鸟巢) in a tree outside his window.“Mum, come and see!” Peter cried. “A bird made a nest in the tree outside my window!”“It even laid some eggs!” Peter’s mum said.“Now I know what I’m going to do for the science fair!” Peter said.For two weeks, Peter watched the bird care for its eggs. He kept a diary to record what the mother bird did every day. Peter’s mum let him use her camera to take pictures when the babies were born.The following week at the science fair, Peter won first place!1. The mother bird is ______ .A. brownB. blackC. whiteD. gray2. To finish the science fair project, Peter ______ every day.A. fed the birdB. kept a diaryC. cleaned the windowD. used a camera3. How did Peter’s mum help him?A. She wrote a report with him.B. She watched the bird with him.C. She drew a picture for him.D. She let him use her camera.CNowadays, we have kinds of technologies to protect us from different disasters. We even know where and when some disasters, like the typhoon, come. While most of the new technologies are far away from us, some around us can help people in disasters.The drone (无人机) is one of them. It can be used to send food, water and other important things when a natural disaster happens. Very often the buildings are too dangerous for rescue (救援) teams to get in. They can make the drone fly into the buildings to search for those who are still alive first.Social media is also a useful tool when it comes to natural disasters. With its help, people can know about the natural disasters before they hit. And some social media platforms allow people to mark themselves as safe after disasters so others can know their status.Social media is also a place for up-to-the-minute news, so people can learn what is going on in the disaster areas. Besides, many social media platforms allow people to donate money to help people in disaster areas. The money will help them get back to their normal life as soon as possible. For example, livestreaming (直播) helped raise a lot of money for Henan after the flood in 2021.Although these technologies can help when there is a natural disaster, we still need to prepare necessary tools and learn important skills to protect ourselves.1. According to the writer, the drone can fly into dangerous buildings to ______ after disasters.A. call rescue teamsB. send food and waterC. search for people aliveD. remind people of danger2. If people know others’ “status”, they know ______ .A. what they are likeB. what they are doingC. if they are at homeD. how they are going4. The writer mentions livestreaming to show ______ .A. social media can provide up-to-the-minute newsB. social media can help raise money after a disasterC. people can know about coming disasters on social mediaD. people can tell others they are safe through social media5. The purpose of the passage is to ______ .A. tell readers what to do when disasters comeB. advise readers to use social media more oftenC. tell readers how some technologies help in disastersD. ask readers to learn necessary skills for natural disastersD(Chu Wenwen, a girl born in 1994, set up True Nature Conservation Association (瞳之初自然保护协会) to protect wild animals in China. Here’s an interview with her. )Host: Would you like to share your childhood stories with us?Chu: Sure. I’ve been hiking with my father in the wild since I was two years old. I spent my whole childhood in the Altai Mountains, Xinjiang. As there were no other children playing with me, wild animals became my best friends. In 2001, I got my first camera and started taking pictures of them. Of all the animals, I paid most attention to beavers (河狸).Host: Why did you care more about beavers?Chu: There used to be 162 families of Mengxin beavers in China, of which only 38 were in the reserve. The other beaver families were in great danger. Most of the beaver babies born each year couldn’t survive. What’s worse, willow shrubs (柳树灌木), beavers’ most important food, became fewer and fewer several years ago. ___▲___ . So I wanted to do something to save them.Host: So what did you decide to do?Chu:In 2018, I started a project. Over 1 million Internet users donated their snack money to it. Later, about 400,000 willow shrubs were planted with the money.Host: What makes you devote yourself to the work?Chu: My father has spent most of his life in the wild. Influenced by what I saw and heard in the childhood, and with my deep love for nature, I have chosen to do the work. My father handed 162 beaver families over to me. and I wanted to make sure that when I handed them over to the next beaver protector. there would be no Jess than 162 families. Luckily, with the support of kind people, the number of beaver families has increased from 162 to 190 over the past four years. I believe more and more people will join us to do something helpful for these animals.Host: You really did a great job!1. When did Chu begin to go to the wild with her father?A. In 1994.B. In 1996.C. In 1998.D. In 2001.2. What do we know about Mengxin beavers?A. Most of them live in the reserve.B. Willow shrubs are their only food.C. Most beavers give birth to babies every year.D. The environment for beavers is getting better and better.3. Which of the following can be put in ___▲___ ?A. It caused many beavers to die of hunger.B. Beavers are good at building things.C. They’re quiet and interesting animals.D. We can hardly see them in the daytime.4. What does the underlined sentence mean?A. Chu wanted to save all the beaver families.B. Chu asked more people to join her to protect beavers.C. Chu hoped that she could protect beavers as well as her father.D. Chu thought it was hard to finish the job that her father gave to her.5. What is the best title for the reading?A. Try to protect animals in ChinaB. A Chinese girl’s life experienceC. True Nature Conservation AssociationD. Chu’s devotion to protecting beavers四、任务型阅读(共10小题, 每小题2分, 计20分)(一)阅读下面短文, 从短文后的选项中选出可以填入空白处的最佳选项。
学英语报外研高二基础第5-8期答案解析
第5期完形填空1-5 CAABD6-10 BADCD11-15 ABCBC16-20 DADCB阅读理解1-4 CBDB阅读填空1-5 FECAD语法填空1.to go2.hobbies3. crossing4. stopped5. but6. Finally7. that8. of9. was eaten10. enjoyable答案解析完形填空语篇类型是记叙文，主题语境是生活。
作者在加油站遇到了一位独自坐在野餐桌前的妇女，出于爱心与她共同进餐并了解了她的故事，最后明白要珍惜眼前人。
1. C。
此处意思是说作者和丈夫开车驶入加油站。
pull into意为“驶入”。
根据第三段中的I got out of the car with the backpack可将A、B、D排除。
2. A。
根据第7空后的asked if it was okay if I sat down with her可知，那位女士独自一人坐在桌旁，无人陪伴。
3. A。
winter coat与long pants相一致，那么热的天气，但是那位女士却穿着冬天的外套和长裤。
4. B。
根据空后的some items并结合下文提到的backpack可知，应该选B 项，即作者把一些东西收拾到一起，放到包里面送人。
5. D。
根据空后的it matched her coat可知，作者认为新的背包很适合那位女士。
6. B。
作者往背包里塞满了零食、饮料和一些个人用品。
7. A。
根据常识可知，应该是向陌生人先做自我介绍，所以选A项。
作者走近那位女士，做了自我介绍并且询问是否可以和她坐一起。
8. D。
D项的bag指代的是上下文提到的 backpack。
9. C。
那位女士请求作者和她一起吃零食，因为她今天还没有吃东西呢。
10. D。
参考上题解析。
11. A。
根据第7空后的asked if it was okay if I sat down with her可知，作者和女士在那里坐了一个半小时。
机械基础5-8章期末试题带答案
《机械基础》试题一、填空题1、齿轮接触属于运动副中的____副。
螺旋副属于运动副中的_________副。
高，低2、曲柄摇杆机构中可作为主动件的构件有______。
曲柄或摇杆3、铰链四杆机构可演化为_______、_______等机构。
曲柄滑块机构，导杆机构4、凸轮机构由凸轮、_____和______三个基本构件组成。
从动件，机架5、根据__________层的材料不同，V带分为线绳结构和__________结构，其中__________结构的带应用广泛。
强力，帘布，帘布6、普通螺纹的牙型特征代号是______，牙型角为____度。
M，607、套筒滚子链中，套筒与销轴采用_____配合，外链板与销轴采用_____配合。
间隙，过盈8、齿轮传动的基本要求是（1）_______________（2）_______________。
传动平稳，承载能力强9、模数是__________与__________的比值，其单位是__________。
齿距，圆周率，mm10、轴承按摩擦性质分____________和____________。
滚动轴承，滑动轴承11、向心轴承的轴瓦有______和______ 。
整体式，剖分式12、滚动轴承结构通常由______，______，______和保持架组成。
内圈、外圈、滚动体13、按轴的功用和承载情况，轴可分为______，______和转轴。
心轴，传动轴14、阶梯轴上截面变化的部分称为______ ，它对轴上的零件起_____ 作用。
轴肩，轴向定位15、链传动按其用途不同可分为____________链、____________链和牵引链。
传动，起重16、液压传动是以_________为工作介质，利用液体的_________，通过_________的变化实现动力传递的。
液压油；压力；密封容积。
17、液压传动系统是由（1）_________（2）_________（3）_________和辅助元件等四个部分组成。
中职英语基础模块1第5-8单元期末考试试卷
14. — Would you like to join us to have dinner this weekend?— _____, because I have a lot of work to do.A. It dependsB. I’d like toC. I love toD. It’s decided15. —It’s too hot and I want a coffee with ice. What have you _____ ?— The same as yours.A. wanted toB. liked toC. got in mindD. thought in mind16. —Could I use your bicycle?—_____ It’s a spare one.A. Good idea.B. Go ahead.C. No need.D. You’d better not17. —I’ll fix your computer right now.—Take your time. _____A. I can’t stand it.B. It’s great.C. I’m in no hurry.D. It’s not my cup of tea.18. We’re doing a _____ about network games. 49A. planB. surveyC. jobD. poster19. —What activities do you usually do online?—I like _____ with my friends every day.A. sendingB. drinkingC. seeingD. chatting20. You should _____ your lessons carefully after class.A. go throughB. go onC. go overD. go after二、阅读并选择最佳答案补全文章（10*1=10）Workplace celebrations of any type are a good way of creating good working environment. People enjoy parties as a way to21) _________special moments in their lives. Some companies hold 22) _________ parties for new employees to help them know their co-workers better. Some companies hold 23) _________ office birthday parties for all the employees born in that month.It is 24) _________ for companies to hold an annual meeting around the New Year. The purpose is to celebrate th e past year’s 25) _________, and to look forward to the next year. Speeches 26) _________ to summarize the company’s big achievements. And it is to praise 27) _________ employees as well. There might also be a lucky draw, and very often there will be dancing, singing and 28) _________ activities. These activities provide a good 29) _________ for the employees to know each other better. Good relationships between employees in return can 30) _________ working efficiency. Workplace celebrations have become an essential part of company culture nowadays.21) A. have B. celebrate C. attend D. know22) A. farewell B. banquet C. welcome D. birthday23) A. monthly B. daily C. weekend D. yearly24) A. informal B. unusual C. special D. common25) A. succeed B. success C. successful D. successfully26) A. make B. have made C. making D. are made27) A. all B. outstanding C. lucky D. new28) A. other B. another C. the other D. others29) A. company B. party C. opportunity D. room30) A. make B. improve C. reduce D. handle三、阅读并选择最佳答案（20*2=40）(A)Dear Mr Michael Smith,On behalf of ABC Shopping, I want to invite you to take part in the opening ceremony of our new shopping mall in Shenzhen. FT Clothing and ABC Shopping have been good partners for over ten years. Your support is of great importa nce to our company’s growth. We want to take this opportunity to express our thanks for you.The opening ceremony is going to be held at 108 Nanping road, Futian district on November 8th at 10:00 am. We hope you will be able to confirm your attendance before November 1st. We look forward to seeing you at this celebration.Sincerely yours,Li Mei31) Who is invited to the opening ceremony?A. Li Mei.B. Michael Smith.C. ABC shopping.D. The new shopping mall.32) When will the opening ceremony be held?A. November 8th.B. November 1st.C. November 10th.D. November 9th.33) Where will the event be held?A. At FT Clothing in Shenzhen.B. At ABC Shopping in Beijing.C. At 108 Futian road, Nanping district.D. At 108 Nanping road, Futian district.34) What is the purpose of the invitation?A. To confirm the place of the event.B. To express thanks for FT clothing.C. To confirm the time of the opening ceremony.D. To confirm the attendance of the business partner.35) Which one of the following is TRUE according to the text?A. Mr. Smith will confirm the attendance at 10:00 am on November 8th.B. ABC Shopping has played an important role in FT Clothing’s growth.C. The new shopping mall of ABC Shopping was in Futian district, Shenzhen.D. The two companies have been business partners for no more than 10 years.(B)The staple food in China is usually rice or wheat. Millet, corn, potatoes, and sweet potatoes are alsocommon. Apart from rice, food made from wheat like steamed bread, noodles, dumplings, and pancakes with local flavors always make dinner table rich and colorful.China is a big country, and people’s eating habits differ from place to place. The local food and cooking from the eight provinces of Shandong, Sichuan, Guangdong, Jiangsu, Zhejiang, Fujian, Hunan and Anhui make the world-famous Eight-Chinese-Cuisine. Many Chinese people are also good cooks. They enjoy cooking at home. For others, they like to eat out. They eat Chinese food not only in expensive restaurants that offer better environment, but also in small restaurants that serve delicious food at low price. People from all over the world can choose from restaurants which serve dishes with different tastes and expenses.36) Which of the following is NOT the staple food in China? _____.A. riceB. wheatC. tomatoD. millet37) Which of the following is NOT one of the Eight-Chinese-Cuisine? _____.A. Henan CuisineB. Jiangsu CuisineC. Zhejiang CuisineD. Sichuan Cuisine38) We can infer (推断) that _____.A. Chinese are all good cooksB. Chinese enjoy cooking in a restaurantC. Some Chinese like to eat outD. Chinese eat in expensive restaurants39) Why do people choose an expensive restaurant? _____.A. They are richB. It offers delicious foodC. There are less customersD. The environment is better40) What is the title of this passage?A. What do Chinese Eat?B. Staple Food in China.C. Chinese Food Culture.D. Restaurant in China.(C)You may know about “junk food” like French fries. But do you know about “junk sleep”? Recently, a British survey found that electronic products(电子产品) in teenagers’bedrooms are affecting(影响) their sleep.The survey was done among 1 000 British children from 12 to 16. It found that 30% of them got just 4 to 7 hours of sleep every day. But doctors say they need 8 to 9 hours. Almost a quarter of the children said they fell asleep more than once a week while watching TV, listening to music or using other electronic products.“This is very worrying.” said Dr Chris, a British expert, “We call it ‘junk sleep’, It means you don't get enough sleep and the quality of the sleep is bad, too. If you don't get good rest, you don't perform well in school the next day.”The survey found that 40% of the children felt tired each day, with girls between 13 and 16 feeling bad. Most of the teenagers have a phone, MP5 or TV in their bedroom. And many of them have all three.41)What mainly affected teenagers' sleep according to the survey?A.MusicB. Junk foodC. Computer gamesD. Electronic products42) How many of the children in the survey feel tired each day?A. 200B. 400C. 500D. 1,00043) “Junk food” and “junk sleep” are similar to each other in the w ay that ________. A. teenagers don’t enjoy itB. people like both in their spare timeC. the quality of sleep or food is badD. they are both good for people’s health44) Which of the following is NOT TRUE according to the passage?A. “Junk sleep” means you don't get enough sleep.B. Teenagers just need 4 to 7 hours of sleep each day.C. Teenagers shouldn’t spend too much time on electronic products.D. Most of the teenagers have a phone, MP5 or TV in their bedrooms.45) What is the author's attitude towards “junk sleep”?A. Worried.B. Doubtful.C. Unhappy.D. Supportive.(D)Wu Mei was born and raised in a village in the east of Hubei province. After graduating from college, she worked in a city. Later, she decided to give up her well-paid job in the city and go back to her hometown to start her own business. She aimed to let more people know about her hometown and help the villagers live a better life through daily posts on social media (社交媒体).Her classmates in the middle school also went back home with her. They decided to give it a try and started their own business after a meeting.They learned the skill together on how to promote themselves to get more followers. It was not easy at the very beginning as they learned everything by themselves. But gradually they began making money and also helped open the market.Wu acts as a bridge to connect her hometown with the big world. “It’s never easy to draw people’s attention. But we’ll work hard to achieve our aims”, she said.46) When did Wu decide to return to her hometown?A. Right after graduating from college.B. After working in a city for some time.C. Before getting a well-paid job.D. Before graduating from a college in Hubei Province.47) What did Wu do when she went back to her hometown?A. She started her business.B. She taught in a middle school.C. She became a nurse in a hospital.D. She worked at a media company.48) Wu used the social media to _____.A. stay away from the real worldB. get more money from the richC. better promote her business and her hometownD. let more people know about her life in the city49) What does the underlined word followers mean?A. Money.B. Thief.C. Fans.D. Specialty.50) How did Wu learn to promote herself online?A. She was good at it at the beginning.B. She learned by herself.C. She found someone to help her.D. She learned it from the university.四．用其适当形式补全以下句子（5*2=10）be able to apart from pay attention to tend to contribute to1.Dear students, please _____________________the notice I sent.2.She ____________________ make breakfast by herself.3.He had an egg _____________________ a piece of bread.4.His daughter also ________________ the great meal.5.People________________ go to restaurants with a good rating.五、作文(20)请结合自身经历谈一谈网络的优点。
MATLAB基础及应用课件(下)第5-8章
图5-5 拟合曲线
第5章 MATLAB数值计算
第5章 MATLAB数值计算
5.4.4 图形窗口的拟合和统计工具
第5章 MATLAB数值计算
在图5-6中的“绘制拟合图”中选择拟合方 法（可同时选多种）；
“显示方程”复核框可以选择是否在图形上 显示拟合多项式；
“绘制残差图”复核框选中时会产生第二幅 图形，该图形显示了每一个数据点与计算出来的 拟合曲线之间的距离。
例如选择“线性”和“三次方”拟合方法， 同时选中两个复核框，产生图形如图5-7所示。
MATLAB的图形窗口中提供了简单方便的数 据拟合和基本统计工具。
数据拟合工具可以对所绘制的曲线使用多种 方法进行拟合；
基本统计工具可提供最小值、最大值、平均 值、中位值、标准差、数据范围等统计运算。
1．数据拟合工具
第5章 MATLAB数值计算
使用数据拟合工具首先需要创建一幅图形，在 命令行窗口输入以下程序：
两个矩阵x和y的相关系 数
第5章 MATLAB数值计算
5.2 数值运算 一、 多项式
名称
创建多项 式
求根
求值
多项式乘 法
多项式除 法
多项式求 导
函数格式 P=[ a0 a1 a2 …an-1
an] P=poly(A) roots(P) polyval(P，A)
polyvalm(P,m)
说明
P为多项式（以下各函数中P均为多项式），a0 a1 a2 … an-1 an为按降幂顺序排列的多项式系数 A为向量。创建以向量A中元素为根的多项式
童诗白《模拟电子技术基础》(第版)笔记和课后习题(含考研真题)详解(5-8章)【圣才出品】
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圣才电子书 十万种考研考证电子书、题库视频学习平台
时间常数，从而降低下限频率。然而这种改善是很有限的，因此在信号频率很低的使用场合， 应考虑采用直接耦合方式。
（2）“带宽增益积”为中频放大倍数与通频带的乘积，即
晶体管选定后，增益带宽积近似常量。当 fH fL 时， fbw f H ，由此可知，fH r 的提高与|Ausm|的增大是相互矛盾的。改善高频特性的根本办法是选择 bb 和 Cob 均小的管
5.1 在图 5.1 所示电路中，已知晶体管的 rbb’、Cμ、Cπ，Ri≈rbe。 填空：除要求填写表达式的之外，其余各空填入①增大、②基本不变、③减小。 (1)在空载情况下，下限频率的表达式 fL= 。当 Rb 减小时，fL 将 ；当带上负载 电阻后，fL 将 。 (2)在空载情况下，若 b-e 间等效电容为 C’π，则上限频率的表达式 fH= ；当 Rs 为零 时，fH 将 ；当 Rb 减小时，gm 将 ，C’π将 ，fH 将 。
子，同时尽量减小 C 所在回路的总等效电阻。 （3）场效应管的增益带宽积为
场效应选定后，增益带宽积近似常量。因此，改善高频特性的根本办法是选择 Cgb 小
的管子并减小 rg 的阻值。
四、多级放大电路的频率响应 1．多级放大电路频率特性的定性分析 设N级放大电路各级的电压放大倍数分别为Aul，Au2，…，AuN，则电路电压放大倍数：
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圣才电子书
2．低通电路
十万种考研考证电子书、题库视频学习平台
低通电路及其频率响应如图 5.2 所示。
图 5.2 低通电路及其频率响应
设输出电压Uo 与输入电压Ui
之比为
Au
，下限截止频率
热工基础答案5-8
状态对应的 h、ω、φ、td ：
答 案
网
解：由 t =30℃、tw =25℃ 在ω-t 图上找到所求湿空气状态点，然后读出该
ww
w.
kh
φ≈66.5 %
（ps 查附表 1-a）
v
mv p 2.823 v 0.02016951 kg/m3 20.17g/m3 V Rg , vT 8314.5 303 18
5.9
p1=3MPa、t1=450℃的蒸气定熵膨胀至 p2=4 kPa，试用 h－s 图求单位质量
蒸气所作的膨胀功和技术功。 解：首先在 h-s 图上按 p1=3MPa、t1=450℃找出初始状态点 1，然后沿定熵
定熵过程： w=－Δu，
wt=－Δh
w u u1 u2 (h1 h2 ) ( p1v1 p2v2 )
课
后
答 案
p2 T2 T1 p 1
500 1.4 293 464 K 100
p4 T4 T3 p 3
1
网
1
100 1.4 1173 741 K 500
5
T1 293 1 36.9 % ； T2 464
ww
0.4
0.4
w.
kh
解：已知： p1 100 kPa ； T1 20 273 293 K ；
da
题略（循环图见 P130. F.8.12）
w.
5 103 p1 193.876 0.287 273.15 ln 59257.7 kJ 101.325 p2
设 2～3～4.
V2 V ，则
高中政治必修一《经济生活》(5-8课)基础知识梳理(框架式)
第五课：企业与劳动者1 含义：以_____为目的，向社会提供____________的____________。
企地位：国民经济的____________、市场经济活动的____________业类别：____________、____________、____________形式：_____________、__________、_____________2 含义：依法_______，有____________财产，以_______为目的的____________。
公形有限责任公司：____________________________________司式股份有限责任公司：_________________________________________3 （1）制定____________经营战略；企业（2）提高_________能力，依靠___________________等手段形成自己的经营竞争优势；成功（3）______经营，树立良好____________的（4）健全____________因素（5）兼并或__________（6）遵守____________，遵守社会公德、商业道德，承担____________ （1）创造____________和____________4 意义（2）促进__________不断再生产就（3）有利与____________实现自身价值根本途径——____________（鼓励发展中小企业和第三产业）业解决国家：________________________措施企业：________________________个人：____________________________________5 维权国家：社会主义____________依原因劳动者：调动劳动者________、创造性的保证。
法（1）党和国家：完善_______________，规范和协调______关系，维维权消除就业____________权措施（2）用人单位：遵守________等相关规定，加强____改善____ （3）劳动者：________________________第六课投资理财1含义：个人储蓄机构储蓄主要储蓄机构——________________存款利息=本金×利率×存期特点：2 主体：商业主要业务：___________、____________、____________；银行其他业务：____________、____________、____________；作用：____________、____________、____________；拓展：我国利率的制定机构——____________基准利率存款准备金（率）3 政策表现：____________货币政策 ____________ ____________ 本质：____________4 股权代表____________即____________、____________、____________；股偿还方式：____________、____________；票影响股价的因素：__________、__________、__________、__________等完善股市的意义：促进___________，提高____________，推动____________。
鲁教版五四制英语八年级下册基础知识专练 (Units 5-8)
鲁教版八下基础知识专练(Units 5-8)Unit 5Ⅰ. 根据句意和汉语提示写出单词。
1. You should put your (心) into your studies.2. I spent the whole day taking (照片) of the city.3. The teacher tried to (引起……关注) all the students in English.4. (不管什么) you do, you should do carefully.5. I think reading more can (增加) your knowledge.Ⅱ. 选择填空。
( ) 1. We should help the people are in trouble.A. whoB. whomC. thoseD. which( ) 2.—do you ______ the action movie?—I enjoy it a lot.A. How; think ofB. What; like aboutC. What; think ofD. How; like about ( ) 3. —The music is really wonderful.—Yes. It reminds me ______ my old life.A. forB. ofC. toD. on( ) 4. —Do you prefer jazz ______ rock music?—Rock music, I think.A. toB. orC. thatD. for( ) 5. Help yourselves to the chicken. It ______ delicious.A. looksB. tastesC. soundsD. feelsⅢ. 按要求改写句子，每空一词。
1. Do you know the young man who has blonde hair? (改为同义句)Do you know the young man blonde hair?2. I don’t want the computer. The computer is too expensive. (合并为一句)I don’t want the computer too expensive.3. What do you think of the TV play? (改为同义句)do you the TV play?4. I prefer classical music to pop music. (改为同义句)I classical music pop music.5. They’re having a great time in Hong Kong. (改为同义句)They’re in Hong Kong.Ⅳ. 根据汉语意思完成句子，每空一词。
机械基础第二学期期中试卷(5-8)
XX中等专业学校2011—2012学年第二学期机械基础学科期中试卷一、判断题（正确的在括号内大打√，反之打×）（24分）1.定轴轮系中每个齿轮的几何轴线位置都是固定的。
2.在齿轮系中，输出轴与输入轴的角速度（或转速）之比称为轮系的传动比。
3.齿轮系中加惰轮即会改变总传动比的大小，又会改变从动轮的旋转方向。
4.齿轮系中的某一中间齿轮，既可以是以前一级齿轮副的从动轮，又可以是后一级的主动轮。
5.齿轮系可以实现多级的变速要求。
6.在中间平面内，蜗轮蜗杆的啮合相当于渐开线齿轮齿条的啮合。
7.棘轮机构能将主动件的往复运动转换成从动件的间歇运动。
槽轮机构和棘轮机构一样，可方便地调节槽轮转角的大小。
齿轮的模数越大，齿轮就越大，承载能力也越大。
V带型号中，截面尺寸最小是Z型。
机器中广泛采用渐开线齿轮是因为只有渐开线齿轮才能保持传动比恒定。
安装V带时，V带的内圈应牢固贴近带轮槽底。
V带传动的张紧轮最好布置在松边外侧靠近大带轮处。
和带传动相比，链传动适宜在低速、重载，以及工作环境恶劣的场合中工作。
蜗杆传动的最主要失效形式是齿轮折断。
模数m表示齿轮齿形的大小，它是没有单位的。
V带的横截面为梯形，下面是工作面。
z=16与z=20的齿轮相比，z=20的齿轮几何尺寸一定大。
用展成法加工齿轮时，一把刀可以加工出任意齿数的齿轮，并能正确的啮合。
对渐开线直齿圆柱齿轮，当其齿数小于17时，不论用何种方法加工都会产生根切。
一组V带中发现其中有一根已不能使用，只要换上一根新的就行。
齿面点蚀多发生在润滑良好的闭式齿轮传动中。
蜗杆传动中，蜗杆的头数z1越少，自锁性能越好，其传动效率越低。
（24分）传动比很大，要求能实现变速、变向的传动，选用▲传动。
A.带传动B.链传动C.齿轮系传动2.齿轮系▲A.不能获得大传动比B.不适宜做较远距离的传递C.可以实现变向和变速要求3.传递平行轴运动的齿轮系，若外啮合齿轮为偶数对时，首末两轮转向▲。
YJK基础专题讲座第5~8节
考虑冲跨比影响，按柱边和桩边位置确定冲切角， 介于45度与75度之间（1-0.25） 计算冲切力FL时，扣除冲切锥底面范围内的桩反力， 本例中，3912.2 = 4890.2 – 978.0
47
柱冲切不够时 可移动部分桩到柱的冲切破坏锥体内
平伐基础沉降迭代实例
沉降迭代效果
不迭代的位移
不迭代的沉降
迭代的位移
迭代的沉降
桩伐基础沉降迭代实例
沉降迭代效果
不迭代的位移
不迭代的沉降
迭代的位移
迭代的沉降
混合基础沉降迭代实例
沉降迭代效果
不迭代的位移
不迭代的沉降
迭代的位移
迭代的沉降
内容大纲
一．基础设计的荷载及软件应用要点 二．复杂基础设计要点 三．基于桩土非线性分析的抗浮、人防设计 四．防水板设计要点 五．基于上部基础土共同作用的迭代计算方法用于沉降计算 六．基础冲切抗剪分析与传统软件的对比和改进 七．YJK基础建模的主要特点 八．YJK设计结果管理的主要特点 九．YJK基础施工图应用要点 十. 考虑基础变形对上部结构的影响—上部基础土共同分析模型的新应用
基础的统一建模统一计算
建模的主要特点
集成所有基础形式的统一基础建模； 基于AtuoCAD导图的快速建模； 筏板布置、编辑极其方便；
l l –
不依赖网格节点； 支持任意形状编辑； 支持移动复制镜像等复杂操作；
强大的辅助编辑工具 辅助自动建模；
地质 资料
独立 基础
地基梁
筏板
承台
桩
条基
拉梁
CAD 导入
43
YJK的承台冲切结果
计算柱冲切力时，如果桩在冲切锥内， 则扣除桩反力，因此冲切力Fl为0。
2019年小学五年级下册基础训练5-8答案
小学五年级下册基础训练答案第五单元18将相和巩固运用3.（1）A （2）D (3)B4.（1）理直气壮：指理由充分，说话有气势。
因为玉在自己手里，心里有底，所以能理直气壮。
（2）廉颇认为蔺相如仅靠一张嘴，官职就比自己高，所以不服气。
不是，蔺相如靠的是机智勇敢，智慧，顾大局、识大体。
拓展阅读1.军心涣散：赵国军队的人员无心恋战，没有积极奋战的心态了。
一意孤行：赵括不接受别人的劝告，顽固地按照自己的主观想法去做。
纸上谈兵:在纸面上谈论打仗。
比喻空谈理论，不能解决实际问题。
也比喻空谈不能成为现实。
2略19草船借箭巩固运用4．不让对方看清楚；顺风顺水，船跑得快；虚张声势，让对方误认为有很多人。
拓展阅读1．因为其他几次和第一次的情景差不多，作者只写第一次，其他几次一笔带过，做到了详略得当。
2.这样指七次捉住孟获都放他走，让孟获心服口服。
“心悦诚服”的意思指孟获真心地服气或服从诸葛亮。
这句话意思是要使一个人真心地服气或服从，不能依靠武力，而应该以德服人。
2019年小学五年级下册基础训练5-8答案巩固运用1（1）一会儿（2）拿、用（3）顺势老虎2.(1)大虫见掀他不着，吼一声，就像半天里起了个霹雳,震得那山冈也动了，接着把铁棒似的虎尾倒竖起来一剪。
大虫的吼叫霹雳虎尾铁棒（2）一掀一剪一闪一闪（3）沉着冷静武艺高强动作敏捷（答案不唯一）拓展阅读1．文中指林冲被高俅逼得走投无路，只好去投奔梁山。
比喻被迫起来反抗。
也比喻被迫采取某种行动。
2．（1）走掩放坐（2）抄吼冲杀情绪由平静到愤怒。
林冲情绪变化的原因是高俅派人要烧死他，即使烧不死也要诬陷他，总之要把林冲往绝路上逼。
3.豪爽，正直，疾恶如仇。
21*猴王出世巩固运用2．（1）石碑刻（2）闭上直接（3）说，叫3.（1）反问（2）排比（3）拟人（4）比喻第五单元自我检测五、1 .鲁肃对周瑜说：“十万支箭，三天造不成。
”2.我不怕秦王，难道我怕廉将军吗？3.为了我们赵国，所以我避着廉将军。
材料科学基础I 5-8 三元合金相图
三元共晶点E 三元共晶点 三条二元共晶曲线的交点E， 三条二元共晶曲线的交点 ，就是 三元共晶点。 三元共晶点。在点进行三元共晶转 变： LE TE ( A + B + C ) → 根据相律 f =C-P +1= 0，这是一个 ， 恒温转变。 恒温转变。 E点所在平面△A’B’C’称为三元共 点所在平面△ 称为三元共 点所在平面 称为 晶平面。 晶平面。 液相面、 液相面、固相面 液相面： 液相面：TAE1EE3TA， TBE2EE1TB ， TCE3EE2TC 固相面： 三元共晶面——水平面 固相面： △A’B’C’三元共晶面 三元共晶面 水平面
Qα = OD' OE ' OF ' , Qβ = , Qγ = DD' EE ' FF '
由于O点象共轭三角形的重心，所以称为重心法则。 由于 点象共轭三角形的重心，所以称为重心法则。 点象共轭三角形的重心 注意，直线法则、 注意，直线法则、杠杆定律和重心法则仅适用于三元相图的等 水平）截面。 温（水平）截面。
二元合金 合金 共晶点 共晶转变 A-B B-C C-A E1 E2 E3 f ＝0 合金 L→ (A+B) 恒温 A-B-C 转变 L→ (B+C) B-C-A L→ (C+A) C-A-B E1E E2E E3E 三元合金 共晶曲线 共晶转变 L→ (A+B) L→ (B+C) L→ (C+A) f ＝1 非恒温 转变
二、三元匀晶相图 1、立体相图分析 、
液相面， 液相面，固相面 相区： 相区： 液相区——液相面以上区域 液相区 液相面以上区域 固相区——固相面以下区域 固相区 固相面以下区域 二相区——液相面和固相面之间的区域 二相区 液相面和固相面之间的区域 立体相图的用途 应用立体相图可以分析某成分的合金的冷却凝固过程， 应用立体相图可以分析某成分的合金的冷却凝固过程，与二 元相图类似。例如，分析合金o的冷却凝固过程 的冷却凝固过程： 元相图类似。例如，分析合金 的冷却凝固过程：温度降低到液 相面开始结晶出固相α，随着温度继续下降，液相逐渐减少， 相面开始结晶出固相 ，随着温度继续下降，液相逐渐减少，固 相逐渐增多，温度低于固相面时液相全部转变成固相。 相逐渐增多，温度低于固相面时液相全部转变成固相。凝固过 程中，液相成分沿液相面变化，固相成分沿固相面变化。 程中，液相成分沿液相面变化，固相成分沿固相面变化。
阎石《数字电子技术基础》(第6版)配套题库-考研真题精选(第5~8章)【圣才出品】
圣才电子书 十万种考研考证电子书、题库视频学习平台
B．ROM 是用于存储固定信息的，因此不可以用来实现逻辑函数 C．ROM 可作为 PLD 实现多输出组合逻辑函数 D．ROM 中存储的信息是固定的，因此 ROM 的存储容量不可以扩展 【答案】C 【解析】ROM 是由存储矩阵、地址译码器和输出电路组成的；ROM 的存储容量是可 以扩展的；ROM 芯片配合门电路是可以实现组合逻辑函数的，故选 C。
输人地址代码的若干位译成某一条字线的输出高、低电平信号，从存储矩阵中选中一行存储 单元；列地址译码器将输入地址代码的其余几位译成某一根输出线上的高、低电平信号，从 字线选中的一行存储单元中再选 l 位（或几位），使这些被选中的单元经读/写控制电路与输 入/输出端接通，以便对这些单元进行读、写操作。
7．若用 32K×8 位的 CMOS 静态 RAM 芯片组成 256K×16 位的存储器系统，共需要 ______片芯片。[北京邮电大学 2015 研]
3．信息即能读出又能写入，但信息非永久性保存的半导体存储器是（ ）。[江苏大 学 2016 研]
A．固定 ROM B．EPROM C．E2PROM D．静态 RAM 【答案】D 【解析】ABC 三项都属于只读存储器，它只能读出数据。
4．欲使 JK 触发器按 Qn＋1＝Qn 工作，可使 JK 触发器的输入端为以下哪几种情况？ （ ）[北京邮电大学 2015 研]
6．在下列触发器电路中，能够使 Qn1 Qn 的是（ ）。[山东大学 2019 研]
A．
B．
C．
【答案】A 【K′Q 可知，A 项可以实现； B 项是下降沿触发的 D 触发器，实现 Q*＝D＝1；C 项是下降沿触发的 JK 触发器，实现 Q* ＝Q＋Q′＝1。
《会计基础》5-8-本节经典例题解析
经典例题解析50．甲公司2019年年初“利润分配——未分配利润”账户的余额为贷方余额，金额为50万元，2019年实现净利润200万元，提取盈余公积20万元，分配利润50万元，则2019年末未分配利润的数额为（）。
A．180万B．250万C．200万D．230万【正确答案】A【答案解析】年末“利润分配——未分配利润”账户＝年初“利润分配——未分配利润”50万＋本年净利200万－提取盈余公积（包括法定盈余公积和任意盈余公积）20万－利润分配50万51．财务成果的计算和处理内容的有（）。
A．利润的计算B．所得税的计算C．利润分配D．亏损弥补【正确答案】ABCD【答案解析】财务成果的计算和处理一般包括利润的计算、所得税的计算和交纳、利润分配或亏损弥补等。
利润的计算，是指期末结转各项收入（费用）、利得（损失）类科目的账务处理。
所得税费用的计算，是指应交纳所得税的计算，所得税的财务处理。
利润分配或亏损弥补，是指提取法定盈余公积/任意盈余公积的账务处理，向投资者分配利润的账务处理所得税费用的缴纳等。
财务成果账户是用来计算并反映一定期间企业全部经营业务活动的最终成果，并确定企业利润或亏损数额的。
故以上四项均表述正确。
52．下列关于“所得税”账户的表述中正确的有（）。
A．该账户是损益类账户B．该账户的余额期末结账时应转入“本年利润”账户C．该账户属负债类账户D．该账户的余额一般在贷方【正确答案】AB【答案解析】“所得税费用”账户属于损益类账户，期末转入“本年利润”账户，无余额。
53．企业实现的净利润，应按照国家的规定和投资者的决议进行合理的分配，在下列各项中，首先应做的是（）。
A．弥补以前年度尚未弥补的亏损B．向投资者分配利润C．提取任意盈余公积D．提取法定盈余公积【正确答案】A【答案解析】企业在利润分配之前，应根据本年净利润（或亏损）与年初未分配利润（或亏损）、其他转入的金额等项目，计算可供分配的利润。
54．下列各项中，属于营业外收入的是（）。
物业基础第5--8章 习题
第5章商业场所的物业管理知识姓名：单位：一、单项选择题(选项中只有一个正确答案)1．市级购物中心的服务人口一般在( )万人以上。
A．1 0 B．20 C．30 D．502．保持商业场所各种标识的完整，其首要作用是( )。
A.确保商业场所的安全性B．确保顾客购物的便利性C．确保各项设备设施的可靠性D．确保商业场所功能的合理性3．出租的( )最适合采用百分比租金形式计收租金。
A.住宅B．高级公寓C．商业场所D．工业厂房4.商业场所租赁合同中设有限制承租人在附近重复设店条款的主要原因是防止影响( )。
A．本商业场所的营业额B．经营内容C．顾客选择产品D．商业场所形象5．商业场所的承租客商中，( )的物业租期通常在20年以上。
A．基本承租户B．主要承租户C．一般承租户D．次要承租户6．物业租期在10年以上，对公共商业场所的经营稳定性起到重要作用的承租客商是( )。
A．基本承租户B．主要承租户C．关键承租户D．一般承租户7．以下表述中正确的是( )。
A．商业场所的承租人应分担共用部位、共用设施设备的维修养护费用B．商业场所的承租人可以自己决定营业时间，不必与其他承租人保持一致C．旨在推广整个商厦的广告费用应由业主承担，承租人有权拒绝为此付费D．商业场所的房产税和土地使用税应由物业管理企业交纳8. 商业场所不仅水、电、卫生等现代化设备一应俱全，更以典雅别致的造型、高标准的建筑质量和优质的上等装饰材料与琳琅满目的商品相衬托，从而树立起良好的形象，主要是为了( )。
A．增加出租面积B．建立商业场所的信誉C．吸引消费者，提高营业额D．使商业场所布局合理9. ( )商业场所多由露天广场、走廊通道并配以低层建筑群构成，包括大型停车场、小件批发市场、电子工业品供应市场等。
A．敞开型B．封闭型C．敞开型及封闭型D．超市型1 0．商业场所客流量大、商品众多，所以在商业场所的物业管理工作中，首要的一项是( )。
A．环境的保洁B．火灾的防范C．购物的便利D．标识的完整11. 商业场所承租客商的选配方法是( )。
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2.5振捣：用铁锹、挂杠铺设，即人工调整铺设厚度至设计要求，铺设后采用平板振捣器振捣密实，压实系数0.9。
5#楼900厚筏板下褥垫层上皮：-5.09m（绝对标高15.51m）；7-8#楼900厚筏板下褥垫层上皮标高：- 5.09m（绝对标高：15.31m）；6#楼900厚筏板下褥垫层上皮：-5.09 m（绝对标高15.51m）；
2.4褥垫层铺设：褥垫层铺设前清槽必须完毕并经设计、勘察验槽合格；褥垫层实铺设厚度为200mm，褥垫层虚铺厚度230mm高出标高20-30mm，以防夯实后褥垫层下沉；褥垫层铺设后采用平板振捣器夯实不少于3遍，压实系数为0.9，伸出垫层边缘不少于200mm。
2.6找平：振捣密实后，以已做好的水平标高线为准检查平整度，高的铲掉，凹处补平。在找平过程中，随时校核标高，以确保褥垫层Байду номын сангаас平整度不超过10mm。
三、质量要求
3.1评定混凝土强度的试块，必须按《混凝土强度检验评定标准》的规定取样、制作、养护和试验，其强度必须符合施工规范的规定。
3.2允许偏差项目(企业标准)
二、施工工艺
2.1工艺流程：弹标高、水平控制线-钉标高控制桩-铺设碎石褥垫层-振捣-找平
2.2标高已经校核完毕，高低差不得超过5mm。基层处理完毕，褥垫层铺设厚度200mm，每边超出基础垫层外边缘200mm。褥垫层碎石材料内不得含有杂物等。
2.3在现场结构外围标志线外钉立小木桩，在其上标注褥垫层上皮标高线。根据工程设计要求及现场实际情况，应在结构南北两侧各设立标高、轴线控制点。为保证整体褥垫层的平整度，因此要求在槽内以间距10m钉立小木桩设立标高控制点，铺设褥垫层过程中拉线检查，小木桩逐个撤除。褥垫层上皮标高同垫层底标高相同；电梯基坑、后浇带、集水坑位置标高较多，具体以图纸为准不再另述。
5.2水平控制点必须设置，点数应覆盖整个槽底，铺设过程和振捣后都必须进行标高的校核。过高或过低的地方及时进行修补。
技术负责人：交底人：接交人：
序号项目允许偏差（mm）检验方法
1表面平整度10用2m靠尺和楔形塞尺检查
2标高±20用水准仪检查
3厚度个别地方不得大于20mm尺量检查
四、成品保护
在施工前，应检查基槽周边上方有无易滑落的物品或材料、工具，以免出现其他情况。
五、质量控制措施
5.1振捣必须密实，达到设计要求0.9的压实系数。控制好标高，确保褥垫层满足设计要求的200mm厚。
工程名称
潮白河孔雀城颐景园普通商品住宅小区二标段5-8#楼
交底部位
褥垫层铺设
工程编号
日期
2015年8月16日
交底内容：
一、施工准备
1.1机具：手推车、尖铁锹、平板振捣器、刮杠等。
1.2材料：5-16mm碎石，粒径不超过30mm。
1.3作业条件：
1.3.1现场道路满足车辆运输及通行的要求。
1.3.2已经甲方、设计、监理及勘察院等各方验槽完毕，清槽完毕并报监理验收。