3#机组联锁保护解读

合集下载

ⅲ与3的用法

ⅲ与3的用法
在数学中，罗马数字Ⅲ和阿拉伯数字3具有相似的意义，都表示计数或顺序。

但是，罗马数字Ⅲ通常用于较大的数字，特别是在罗马时代，而阿拉伯数字3则更为通用。

此外，罗马数字Ⅲ还有特定的数学符号意义，例如表示三角形。

- 阿拉伯数字3的用法：
阿拉伯数字3是一个基本的计数和顺序符号，可以用于表示数量、次序或顺序等。

例如，表示数量时可以表示三本书、三个苹果等；表示次序或顺序时可以表示第三名、第三个进球等。

在数学中，3通常用于表示一些基本的数学概念或运算，如三次方根、三角函数等。

- 罗马数字Ⅲ的用法：
罗马数字Ⅲ主要用于较大的计数或顺序，特别是在罗马时代。

例如，罗马帝国的年份和历史事件通常使用罗马数字来标记。

此外，罗马数字Ⅲ也可以用于表示三角形的数学符号，例如直角三角形、等边三角形等。

在科学和工程领域，罗马数字Ⅲ也用于表示一些特定的参数或符号，如质量、体积等。

总之，罗马数字Ⅲ和阿拉伯数字3都是计数和顺序的符号，但在使用上略有不同。

罗马数字Ⅲ主要用于较大的计数和顺序，特别是在历史和科学领域，而阿拉伯数字3则更为通用，在日常生活中更常用。

3在生活中可以表示什么

3在生活中可以表示什么
在生活中，数字3可以表示许多不同的事物和概念。

它是一个有趣而多面的数字，可以在各种场合和情境中被发现。

下面我们来看看3在生活中可以表示什么。

首先，3可以表示团结和和谐。

在许多文化和宗教中，3被视为一个具有特殊
意义的数字。

例如，在基督教中，三位一体代表了上帝的三个位格，父、子和圣灵。

在许多民间传说和神话中，三个兄弟或三个姐妹通常代表着团结和和谐的家庭关系。

因此，3可以被视为一种象征，代表着团结和和谐的力量。

其次，3也可以表示平衡和完整。

在许多领域中，平衡和完整都是非常重要的
概念。

例如，在艺术和设计中，三角形被认为是一种非常平衡和完整的形状，因为它具有三个相等的边和三个相等的角。

在哲学和心理学中，三个要素的平衡和完整性被视为一种理想状态，可以带来内心的平静和满足感。

最后，3也可以表示变化和发展。

在自然界和人类社会中，一切都在不断地变
化和发展。

这种变化和发展通常可以被分为三个阶段，开始、中间和结束。

例如，在植物的生命周期中，种子发芽、成长、开花结果，这三个阶段代表着植物的生长和发展过程。

在人类社会中，许多事物也经历着类似的变化和发展过程，例如家庭的成长、企业的发展等。

综上所述，3在生活中可以表示团结和和谐、平衡和完整以及变化和发展。

这
个数字在我们的日常生活中随处可见，它提醒着我们生活中重要的价值和原则，同时也让我们更加深入地理解世界的本质和规律。

让我们在生活中保持团结和和谐，追求平衡和完整，不断地变化和发展，让自己和周围的世界变得更加美好和丰富。

3的寓意和象征

3的寓意和象征3的寓意和象征一直以来都是令人着迷的话题，它在人们的生活中占据着重要的地位，不仅仅出现在数字、图形、文学、艺术等方面，还深刻影响着人们的思想、信仰和文化。

在这篇文章中，我将详细介绍3的寓意和象征，以及它所代表的含义和影响。

首先，3是一个具有神秘色彩的数字，它既可以代表幸运和成功，也可以代表不幸和厄运。

在苏格拉底哲学中，3被视为灵魂的数字，因为人们的灵魂是由三部分组成的：理智、情感和欲望。

在基督教中，3被视为象征着三位一体的上帝：父、子和圣灵。

此外，3还代表了生命、死亡和再生。

在古埃及神话和其他文化中，3代表了三个阶段的循环：生命、死亡和再生。

因此，3可以被看作是一个象征着生命循环的数字。

其次，3还与创造、平衡和完美相关联。

在美学中，3是一个非常重要的数字。

它被视为最平衡和完美的数字，因为它刚好处在1和5之间。

三角形也是一个具有完美平衡的形状。

许多艺术品中都有3的影子，例如三原色、三分色彩、三分构图等等。

此外，在许多文化中，3还被视为一个神圣的数字，因为它代表了创造力和天赋。

三只乌鸦、三只小熊和三只猪都被视为聪明、勇敢和有才华的动物，在古代也被视为象征着精灵和神仙。

最后，3还代表了联合、和谐和团结。

这一点在许多文化中都非常明显。

在儒家文化中，三才是社会组织的基础，三纲五常是家庭道德的基础。

在希腊神话中，三姐妹毕斯提斯是命运女神，代表着联合、平衡和团结。

在印度教中，三位主神布拉马、维希努和湿婆代表着三种“神圣能量”，这些能量一起形成了宇宙的平衡和谐。

3的寓意和象征是多种多样的，每个人对于3的理解也是不同的。

它可以代表幸运、成功、生命、创造力、和谐、团结等等，这些都是人们追求的目标。

同时，3也可以代表着不幸、痛苦和困难，对于这些挑战，我们需要勇敢地面对和克服。

因此，3不仅是一个数学数字，也是一个哲学概念和文化符号，渗透在人们的生活和思维之中。

它给我们带来了深刻的启示和思考，也让我们惊叹于数字和生命的奥秘。

新标准大学英语（第二版）视听说3听力原文及选择题整理

新标准⼤学英语（第⼆版）视听说3听⼒原⽂及选择题整理⼤学英语三视听说3第⼆版听⼒材料以及选择排序题整理U1Outside view1-2原⽂Presenter: Happiness is not what most students have in mind when they think of school. Yet a school in Germany has developed a novel way to raise the morale of its students, by teaching happiness in classes. Students at Heidelberg’s Willy Hellpach School of Economics are learning how to achieve happiness as an official subject, alongside mathematics and languages. This is the first school in Germany to develop a happiness course, intended for 17- to 19-year-olds preparing for university entrance exams. Ernst Fritz-Sch ubert, the school’s principal, is on a mission to change things.Ernst: It was my idea –I’ve been at this school for 31 years, and I feel that school and happiness have to be reunited. These are two terms which are not considered together, because one does not connect school with happiness. In some cases school comes behind the dentist on the popularity scale and we should try to push schools’ popularity a bit. It has been proved by science that a happy student can learn more than an unhappy one. Unhappy students can concentrate for a while but do not use all their potential. The happiness classes are intended to help students fulfill their potential. They will help the students live happy and prosperous lives.Presenter: The classes aim to help students in achieving a positive state of mind, by using all their own resources and boosting their self-esteem. In addition, they hope classes will increase self-awareness and physical comfort. Happiness classes are also intended to make students more aware about their environment and society as a whole. During classes students are encouraged to express themselves and observe their peers’ behaviour. The classes are taught by Bjoern Bonn, an actor and visiting lecturer.Outside view 3-4原⽂Bjoern: One of the exercises I do is to have one of the students walk across the classroom, with the others copying his walk. Through this exercise, I hope they learn something about themselves. Why do I move like this? How do others see my way of walking? I hope that with a higher body awareness they ideally – of course it will take time – achieve a higher self-consciousness which could lead to happiness. Wolfgang: We give these classes to students to help them find happiness. Now the question is: How do I define happiness? Happiness is for example a strengthening of the personality. We are providing helpful suggestions to make stronger people. People that ask "Who am I as a person? Am I really happy?" Pascal: It takes time and everybody has to find happiness for themselves. You cannot go into a coaching lesson and say, “Teach me happiness.” One can only get indications from teachers or the visiting lecturers. There are also happiness scientists, if we could talk to one of those I’m sure he would have some hints.Yosma: You would think that the teachers are writing definitions on the board. Not true. Those who want happiness have to find it for themselves, you cannot really learn that.Presenter: So what does it take to be happy, and can you learn it at school?News report 原⽂1、Recent statistics show that young people are heading abroad in ever-increasing numbers – at least temporarily. Experts say spending time overseas can give students an advantage when looking for a job after they graduate. Employers are attracted to candidates with international experience and global skills.Audrey Morgan, a graduate of the University of Pennsylvania, was inspired to learn Spanish. She decided to spend a semester studying in Spain during her junior year. That experience led to the job she has today, as an engineer for a technology company with offices all over the world.Her current work project involves working closely with an organization in Spain, and her fluent Spanishmeans she is able to translate documents from Spanish to English and communicate with her Spanish co-workers. She hopes to work in one of her company’s international offices within a few years.It’s up to students to decide how long they want to spend studying overseas. They may go for a year, a semester or a summer. However long or short the time, they are sure to have a rewarding experience. Q1: How does studying abroad give students an advantage in the job hunt?A. Employers are looking for candidates who have global skills.Q2: How much time should students spend overseas?D. Any amount.2、Potential college students are once again facing the annual ordeal of college admissions. Each year many university-bound students in the US fear writing the required college application essay. However, it is a chance for students to show admission officers who they really are beyond grades and test scores.A strong, well-written essay can make a difference when universities are choosing between talented applicants.Each university has its own set of essay prompts and questions that students can answer. They want students to reveal their best qualities and interests, show their creativity, as well as their writing skills. One university’s sample prompt is: “Describe the world you come from –for example, your family, community or school –and tell u s how your world has shaped your dreams and aspirations.” Or a question simply asking “What makes you happy?”Some students find that the essay is one of the most challenging things they’ve written. They have to think about issues that really matter to them, what their values are and what their experiences mean to them. Usually, by the end of the process, students will have discovered a lot about themselves that they didn’t know before.Q1: What do we learn about the college application essay from the news report?D. Students are required to submit an essay to universities.Q2: How do students feel about writing the college application essay?B. Students are afraid of writing the essay.Inside view1、Interviewer: Can you tell me … how do you think you have changed as you have matured? What things have had a major influence on you?Speaker 1: Well, let me think ... I suppose going to university had a big impact on my life. It made me much more open-minded. I met so many different types of people there with weird and wonderful ideas and it changed the way I see the world. I’m much more tolerant now ... It made me a more rounded person.Interviewer: Great ... And has any particular person had a central role in forming your character? Speaker 1:I guess that’d ha ve to be my grandfather. I was very close to him and he taught me to stand up for my beliefs. He was always telling me about his ...Interviewer: So what people or events have had an impact on your life?Speaker 2: I think that travelling in my gap year made me grow up and see both the beauty of the world and, well ... just the generosity of ordinary people. I travelled a lot around Asia and you know, I found that in some of the poorest countries, like Cambodia and Laos, people share whatever little they have, and they possess a real joy for life. It’s probably made me a less selfish person.Interviewer: Interesting. ... So you would recommend that young people take a gap year to discover themselves and the world?Speaker 2: Definitely. It gives you an opportunity to learn about the world beyond the one you grew up in and I found it really …Interviewer: Could you tell me what things in your life have had the greatest influence in forming your personality?Speaker 3: Well ... a couple of years ago I was on a reality TV show where a group of young people all lived in a house together. Each week someone was voted off by the audience. I got down to the final three! I suppose being on the show and seeing how the other contestants behaved made me realize howselfis h and spiteful some people can be just to get what they want. I also realized it’s best to just be yourself in life. If you pretend to be someone different people will eventually see through the lies. Interviewer: Right ... And how did you feel when you were eventually voted off?Speaker 3: Relieved, to be honest with you. But you know … a slight regret that I didn’t win because I kind of ...Interviewer: So can you tell me, what one thing do you think has had the biggest impact on your life? Speaker 4: Hmm, that’s a difficult question. But I think helping victims of the tsunami in 2004 had a very great impact on me. I’m half Thai and I’d just arrived in Thailand for a family Christmas holiday. When I heard the news I knew I had to help –you couldn’t not. I ended up acting as an interpreter for a group of volunteer doctors. It was an incredibly difficult time but you know, even in the middle of such a horrific tragedy there is still a huge amount of genuine human kindness.Interviewer: That’s amazing! And ha s it changed the way you view your future ...1. How did going to university change Speaker 1?C. It made him more open-minded.2. How did travelling change Speaker 2?rD. It made her grow up.3. How did being on a reality TV show change Speaker 3?A. It m ade him realize it’s important to be yourself.4. What did volunteering help Speaker 4 see?B. Genuine human kindness.2、Tony: Talking to us today in our Life Choices series is Joan Robinson, an academic counsellor at Manchester University. She gives advice to school students on choosing the right subject to study at university. Joan, welcome to the show. Joan: Thanks Tony.Tony: So Joan, what do our listeners need to think about when choosing a course? It’s a huge, potentially life-changing decision, isn’t it?Joan: Yes. I generally give students advice in two areas. Firstly, know yourself, and secondly, think to the future.Tony:When you say “know yourself” what do you mean?Joan: Basically, I mean evaluate your own personal strengths and weaknesses, your personality traits and the things you like.Tony: I see ... So how can our listeners do this?Joan:Well, start by asking yourself questions to help reflect on your life so far. For example, what subjects are you good at? Are you an organized and self-disciplined person? Are you confident and outgoing? Do you like working with others in a team or do you prefer working alone? These kinds of questions will help you discover more about yourself.Tony: Sounds like good advice. How about your second point regarding the future?Joan: Well, your choice of major subject is likely to have a significant impact on your future career so it’s important to look into this carefully. I recommend you check not only which academic subjects will help you get into a particular area of work, but also look carefully at what universities offer. Each university has its strengths so try to choose one that is the best in your chosen field. Find out what links the department has to related industries and leading companies in it.Tony: Good point. Now I’d like to take some calls from our listeners. First up we have James on the line. Hi James! How can we help?James: Hi. I’m interested in a career in IT and I’d like to ask Joan whether she thinks it’s better to go to a highly respected university, like Oxford, or to study somewhere that has more of a vocational focus? Joan: Well, James, you know it really depends on what you expect to get out of a university and how you see your future. Basically a handful of the brightest graduates are picked from the top universities around the world to join the leading IT companies. So I’d say if you’re a high-flyer then this is the route that might be for you. But if you are looking for a more mainstream career then you should consider a course that helps you acquire practical, transferable skills that you can use in the workplace ... and lookat which universities have the best levels of graduate recruitment for the kind of job you are aiming for. James: I see! Thanks a lot. That really helps me out …UNIT2Outside view1、Presenter: Around the world many children are living in poverty. Many children live in countries where there is war. Many children do not get enough to eat. Some of these children are suffering from malnutrition. Many children in the world cannot go to school. One agency that is helping these children is UNICEF. UNICEF means the United Nations Children’s Fund. UNICEF has more than 7,000 people working in 157 countries around the world to help children. One country where they are doing a great deal of work is Afghanistan. A whole generation of children in Afghanistan has never known peace, until recently. Now, UNICEF is bringing food for malnourished children. They are bringing medicine. Here a medical team travels on horseback to bring medicine to a remote mountain village. And UNICEF is helping the children get an education. DrLaroche: During the time of Taliban we have made a survey among 40,000 kids. And, uh, and they all say that the first thing they want is peace. And the second thing that they want is, was education. Presenter: The Taliban destroyed almost 2,000 schools. Under the Taliban, girls were not allowed to attend school at all.Moyeen: Well, over 50 per cent of the school has been destroyed completely. In the rest of the 50 per cent schools which, eh, eh, needs repair, we are trying to accommodate all the children in the schools. Presenter:Some of the schools are in people’s homes. This is a home school in Kabul. The teacher, HabibaKilwati, has been running the school for 12 years. She supervises 26 other schools like it.2、Student 1: We want to learn, so we can become teachers, doctors, or engineers and be like normal students.Presenter: It was dangerous for children to go to school. Under the Taliban, police punished families whose children went to school. Today, children are happy to be in school.Student 2: This morning I had some tea and an egg and came to school. I have notebooks, pencils, erasers, and friends and fun here.Presenter: UNICEF is helping rebuild the educational system in Afghanistan in many ways. UNICEF is helping to train teachers. They are rebuilding schools. They are printing textbooks, and delivering books and other supplies to schools. This girls school was closed under the Taliban. Now it is opening again. It has room for 960 students. These girls are happy to be back in school.Student 3: I am very disappointed and sad that I wasted six years. There was no education then. I tried to study then with my parents, but it’s not the same. It wasn’t so b ad, but now I am much happier because the schools are reopening.Maliha: We plan to open the schools and get these children enrolled and back in school. And to give them back their education, so they can read and write.Afghan man: When the Taliban came to power and closed the schools, girls stayed at home. Now there is an opportunity for them to continue their education. We are very happy about this. We can be proud of our girls, our young people. They can go back to school.Presenter: UNICEF is working on its mission to bring food, medicine, and education to the children of Afghanistan. In the process, they are also bringing hope.1.What happened when children went to school under the Taliban?D. The police punished their families.2.How is UNICEF helping to rebuild the educational system?A. They are printing textbooks and delivering books to schools.3.How many girls does the girls school have room for?B. 960.4.What did Student 3 try to do in the past six years?B. To study with her parents.5.Why does the Afghan man feel happy and proud?A. Because girls can continue with their education.News report > 1For those of you who were thinking the selfie was the final development in photography, there’s something new – a growing trend for people to recreate their childhood photos as adults. Some people recreate the photos as an amusing gift for their family, and others do it to relive their happy memories. Some of the photos have spread quickly across social media after being shared online.The Dobbie sisters’ family photos are the latest to go viral. The four sisters from Australia decided to create one last memory with their pet dog just before his death. They’d had Tigger since they were all children, but after 16 years together, they made the difficult decision to put him to rest. They decided to recreate a photo they found showing the girls when they were younger, sitting under a tree holding their beloved dog. The result is a heartwarming image that shows how much they have all grown and how the sisters’ love for Tigger has never changed.Q1: Why do people recreate their childhood photos according to the news report?They recreate photos to relive their happy memories.Q2: Why did the Dobbie sisters recreate the photo?C. Because the sisters wanted to create one last memory with their dog.News report > 2A rare Star Wars figurine was sold for 2,7000 US dollars. Experts say nostalgia is driving prices higher. For many adults, childhood memories revolve around the toys that they played with when they were younger. Seeing or holding an old toy from their past can transport them back to the time when they first laid eyes on it at the toy store, and the excitement they felt about taking it home to play. Toys from thepast were much simpler compared to the high-tech toys of today. Some may even argue that toys from the past encouraged children to use their creativity and imagination. In order to recapture their happy childhood memories, people collect old toys they had as children.There are many serious collectors who are willing to pay top prices to bring back memories. For example, Cabbage Patch Kids were dolls that were very popular in the 1980s. While toy stores still sell them, collectors want the original dolls and the rare collectibles are listed on eBay for up to $2,500. Other popular collectible toys are action figures such as G. I. Joes, Star Wars figures, My Little Ponies, and Barbie dolls.Q1: What is the difference between toys from the past and toys of today?D. Toys from the past encouraged more creativity and imagination than toys of today.Q2: What do we learn about old toys from the news report?B. Old toys can bring back happy memories for many people.Insideview1、One of the strangest feelings I’ve ever had was when I returned by chance to a place where I’d been happy as a child. My husband and I were visiting some friends for the weekend – they lived about 200 kilometres away. We were driving along when I suddenly saw a church in the distance that I recognized. My favourite aunt had lived very near it on a farm that my brother and I used to visit once a year with our parents.We were city kids, brought up in the middle of London, and this was a working farm – the real thing – with cows in cowsheds, fields with ponds and a muddy yard full of smelly pigs, and – we had the run of the whole place – it was just paradise for us. And then – there was the food – oh, home-made jam and bread and cakes, milk fresh from the cow. And my aunt Lottie –a farmer’s wife – and her husband, Uncle George and their kids, Katie and Ben, our two cousins who my brother and I really got on with. It was heaven that week we used to spend there. They moved from the farm when I was … how old? –about 14. So I’d never been back or seen it again.An yway, there we were, and I’d just seen the church –so we turned off and drove down this really narrow lane. And before I knew it we were in front of Aunt Lottie’s farm! The extraordinary thing was that it hadn’t changed – not one tiny bit.It was a lovely old place with a typical country cottage garden, full of flowers. There were lots of barns and sheds – they were next to –next to the farm. And you know, I can’t even begin to describe the feeling I had standing there. It was –oh, what was it? –an incredibly powerful feeling of longing –nostalgia for the past –for times when I’d been very, very happy. But it was the past. I hadn’t been there for 20 years and I couldn’t go back, so I also had a feeling of huge sadness, that I couldn’t havethose times again. And – at the same time – great sweetness, because those times had been so happy, so innocent –because I was a child! So there was this extraordinary mix –of longing, sadness and sweetness, all at the same time. It was the strangest feeling I’ve ev er had.1. Why were the speaker and her husband near the farm?C. Because they were visiting friends.2. Where had the speaker been brought up?B. In the middle of London.3. Why does the speaker describe the farm as “just paradise”?A. Because it was a real farm and she and her brother could run around.4. What food does the speaker mention?C. Jam, bread, cakes and milk.5. What do we learn about the farm?D. The garden was full of flowers.6. What feelings does the speaker mention?A. A longing for the past, sadness and sweetness.2、Interviewer:So what’s your first memory of school, Kevin?Kevin:I was really looking forward to school, I remember that, I just couldn’t wait. Yeah, Johnny, my brother, was a year older than me and he seemed so grown-up, with his red blazer and smart shoes.And I wanted to go to school and be grown-up too. I don’t remember much of the first day actually, apart from this little boy lying on the floor and screaming and screaming and me thinking what a baby he was. Interviewer: Right! What about you, Eva?Eva: I just have this one memory of this coat rack with all our coats. And I was looking for my peg which had a little picture of an elephant next to it. I remember I was crying because I wanted to go home and I coul dn’t get my coat on. I was crying so much and then the teacher came and helped me. Interviewer: OK, so what about your first best friend at school?Kevin:Oh, yeah, well, Steve, I remember him? because he’s still my best friend!Interviewer: Still your best friend!Eva:That’s so great!Kevin:Yeah, we didn’t know each other before we started school but we became really good friends and so did our mums. Our families ended up going on holiday together and that kind of thing. But we used to fight a lot, Steve and I, and the teachers used to get very cross with us. But we were just having fun. Interviewer: Cool! And what about you, Eva?Eva: My best friend was a girl called Robina. She had short blond hair, I remember I thought she looks (looked) like an angel. We sat next to each other and held hands and played fairies in the playground. She left in Year 3 and I cried for days. Interviewer: Oh, how sad! So what about the day you left school? How was that?Eva: I had a lot of mixed feelings, I remember walking home with this amazing feeling of freedom, you know, no more rules, no more bossy teachers. But I also felt pretty sad, because I’d had some good times. I was in a group of girls who were so supportive of each other.Kevin:I couldn’t wait to leave, I was counting the days. I just wanted to get a job, get a life, earn some cash. The day I left, I went out to celebrate with a couple of my mates and – had a very good time!UNIT3Outside view1、Part 1Voice-over: The Mona Lisa, the most famous painting in the world, was truly revolutionary even in its time. While he was painting the Mona Lisa, Leonardo da Vinci broke all the rules, even his own. In spite of the fact that Leonardo and other artists believed that women should only be portrayed with eyes gazing slightly down, Leonardo painted the Mona Lisa looking directly at the viewer. The position of her body is another innovation. While her face looks straight ahead her body is slightly turned, a pose that creates a sense of movement and tension. In another break from tradition, the Mona Lisa is not wearing any jewellery or adornments. Finally, backgrounds in portraits usually indicated a real place but the landscape in Leonardo’s portrait seems almost i maginary.Anne: One of the things I like to do is, um, think about her face and why, what is she trying, why, what is she trying to say with her face, and I used to think that her face told more than one story. For instance, if I covered up one side of her face, it seemed like she might be a little sad or reserved, almost secretive. Scott:Her eyes are, they’re kind of looking at us or around us, through us perhaps. I think with that painting she’s the viewer and we’re the subject in a way. And she has this look that she knows something that we don’t know.Anne: And then when I covered up that side and looked at the other side, she seemed happier, um, more satisfied. And together it created sort of the mystery about her that, um, made interpreting her face very enigmatic.Scott:There’s speculation that the Mona Lisa is a self-portrait of Leonardo and I, I believe that it is, there, there, the features do line up between the Mona Lisa and sketches of Leonardo.Voice-over:2、Part 2Anne: When I was young, um, I was always interested in, um, reading books about people and, and the dynamics, different kinds of relationships they had and so when I became a painter it was natural for me to be interested in painting people and looking for similar kinds of stories to tell about them, that you might read about in a book.Scott: Uh, most of my work consists of photographic self-portraiture. Um, I’m interested in using myself as the subject, um, not only as the creator of the image but as the, the character, or the performer of, of the images.Anne:So in my portraits I’m trying to capture, um, a deeper essence of a person, um, more or less. Scott: This work here is done with a pinhole camera, which requires a very long exposure so, with a portrait you can get this feelin g of time passed. It’s not a, it’s not an instant, per se, it could be five minutes of exposure.Anne:So this is another project I’m working on. I’m almost finished with it but I still need to work on the reflections in the water, um, and the face of the boy before it’s finished.Scott: I often work with multiples and, you know, using a mirror or the same image twice and what I wanted to do was link the two portraits together with the string. It’s kind of the string of thought or this idea of remembering or the resilience of memory.Anne:I don’t just paint from photographs. I try to make a work of art. Um, I try to make a painting that goes beyond a mere photographic image. I try to capture something about the soul of the, or the essence of this person.Scott:This piece here is, uh, it’s called The Measure of Decay and behind the piece there are portraits, again, of me. I have this clay covering on that has cracked and so it’s, it’s kind of like the process of decay. So as each portrait goes around you can, you can see the image in a different focus.Anne:I love painting portraits. I love painting but portraits are very special because they’re about people. Scott:I’m fascinated by portraiture in general, and the human body and how that image lives over ti me. Anne: I like to capture what is unique and special about an individual in paint.News report>1Israeli artist EyalGever is working on a project that will be the first artwork created in space. It will be a 3D sculpture made inside the International Space Station. He will create his artwork using a zero-gravity 3D printer. Once it is finished, the sculpture will be released into the universe.Working with NASA, Gever’s space project is named “Laugh”. The 3D printer will produce a physical representatio n of a person’s laugh. Sound cannot travel in space, but this sculpture can show what laughter looks like.Gever is asking people around the world to participate in his project. There is a social media campaign called “LaughInSpace”, where people are invit ed to record and submit their laughter online. When the audio samples have been collected, people will be invited to vote on which clip should be represented in the sculpture. Then Gever will use the sounds of the winner’s laughter to create the space scul pture.。

高清电影Ed2k链接地址3

根3是无理数的证明

根3是无理数的证明今天咱们来一起看看为什么根3是无理数呢？这就像一场有趣的数学冒险哦。

咱们先来说说什么是有理数。

有理数呀，就像是我们能很容易找到规律的数。

比如说，1呀，2呀，还有像1/2这样的分数。

你看，1就是1个，2就是2个，1/2呢，就是把1个东西平均分成2份，每份就是1/2，这些数我们都能很清楚地知道它们是多少。

那无理数呢？无理数就像是一群调皮的小怪兽，藏在数字的世界里。

根3就是其中一个。

咱们来假设根3是有理数。

那按照有理数的定义，它就可以写成一个分数的样子，就像a/b（这里的a和b都是整数，而且b不能是0哦）。

而且呢，我们可以让这个分数是最简分数，就是说a和b没有除了1以外的共同的约数，就像3/4这样，3和4除了1就没有别的数能同时整除它们了。

那如果根3 = a/b，那把两边都平方一下，就得到3 = a²/b²，然后再变一变，就成了a² = 3b²。

这时候，咱们来想个例子哦。

假如a是个整数，那a²就是a乘以a。

比如说a = 5的时候，a² = 5×5 = 25。

那a² = 3b²这个式子呢，就说明a²是3的倍数。

那什么样的整数的平方是3的倍数呢？咱们可以试试一些数。

像1的平方是1，不是3的倍数；2的平方是4，也不是3的倍数；3的平方是9，这就是3的倍数啦。

其实呀，只有a本身是3的倍数的时候，a²才会是3的倍数。

那咱们就可以说a = 3k（k也是个整数）。

把a = 3k代入到a² = 3b²里，就变成了(3k)² = 3b²，算一算就是9k² = 3b²，再变一变就是b² = 3k²。

这就和前面说a²的情况一样啦，这就说明b也是3的倍数。

可是呢，我们最开始说a/b是最简分数呀，现在a和b都是3的倍数，这就矛盾啦，就像我们说好了一件事，结果发现这件事根本做不到一样。

3的数字代表什么意思有什么含义

3的数字代表什么意思有什么含义数字“三”无论是西方还是在中国都被作为神秘的象征。

那么，你知道3的数字代表什么意思吗?接下来就跟着店铺一起去看看3的数字代表含义吧。

3的数字含义数字3的含义：表达数在两个对立之间有著抽象或灵性的关系，例如阴和阳并不是一种关系，爱或欲望必须存在，这样才会有所谓的关系出现，关系的建立是存在于两端之内的第三股力量，对立的和解是宇宙中第三力量。

三的扮演角色，在“三位一体”中得以认知，这在古埃及或世界上其他的神话(例如____的三位一体)中出现。

数字3拥有极高的表达天赋，他们会非常乐意跟人交流自己的想法，也会非常喜欢各种社交关系带给自己的新鲜感。

他们喜欢在人群中表现自己，由于他们对情绪拥有极强的感受力，天性中又带着浪漫快乐的一面，所以他们时常会成为朋友圈内调解气氛的快乐源泉。

数字3的含义关键词：沟通、社交、快乐象征符号：三角型属性：灵巧聪慧型对应色彩：黄色五行：阳火星座排行：双子、双鱼数字3在形态上是个多方位的“可爱数”，把3侧翻过去就是英文字母E，躺下又像是W，趴下看又成了M，这是阿拉伯数字里最有趣的一个数。

3代表关系，黑与白无法直接关联，阴和阳必须同时存在，关系的建立是第三种力量。

1是父亲，2是母亲，而3就是它们的“孩子”。

在____中，3是圣父、圣子和圣灵的综合体，即男性驱动力+儿童状态+灵性结合三位一体数。

这是一个乐观机敏的数字，具有旺盛的好奇心，乐观善于表达，具备孩子一般的纯真与多变性。

正面优势聪明，热情，想象力丰富，有创意，幽默感，充满活力，善于表达，时尚，擅社交，沟通，多才多艺，有趣，乐观，有激情，受欢迎负面挑战夸张，缺乏责任心，做作，缺乏方向，自我怀疑，搬弄是非，幼稚，逃避现实，肤浅，虚荣浮华，喋喋不休，撒谎，铺张浪费恐惧被限制，无聊，面对现实，不被关注数字3的象征意义数字“三”无论是西方还是在中国都被作为神秘的象征。

“三”在符号象征体系中，几乎不含任何反面意义，其象征意义涉及到宗教思想、传统、神等诸多领域。

由三个不同的英文字母和三个不同的阿拉伯数字组成一个

一般模型：一般模型
个元素，从4个不同的元素a、b、c、d中取出个元素，然不同的元素中取出3个元素后按照一定的顺序排成一列，共有多少种不同的排法？一定的顺序排成一列后按照一定的顺序排成一列，共有多少种不同的排法？
由此可以写出所有的排列：
abc adb bca cab cda dba
abd adc bcd cad cdb dbc
练习
练习2 练习2．在A、B、C、D四位候选人中，选举四位候选人中，四位候选人中
正、副班长各一人，共有几种不同的选法？写出所副班长各一人，共有几种不同的选法？有可能的选举结果．有可能的选举结果．解：选举过程可以分为两个步骤．选举过程可以分为两个步骤．
步选正班长，人中任何一人可以当选人中任何一人可以当选，种选法种选法；第1步选正班长，4人中任何一人可以当选，有4种选法；步选正班长步选副班长，人中任一人都可以当选，第2步选副班长，余下的人中任一人都可以当选，有3 步选副班长余下的3人中任一人都可以当选种选法．种选法．根据分步计数原理，不同的选法有：根据分步计数原理，不同的选法有： 4 ×3＝12（种）．＝（其选举结果是：其选举结果是： AB AC AD BC BD CD BA CA DA CB DB DC
问题1 从甲、问题1 从甲、乙、丙3名同学中选出名参加名同学中选出2名参加名同学中选出
某天的一项活动，其中1名同学参加上午的活动名同学参加上午的活动，某天的一项活动，其中名同学参加上午的活动， 1名同学参加下午的活动，有多少种不同的方法？名同学参加下午的活动，名同学参加下午的活动有多少种不同的方法？元素：元素：被选取的对象一般模型：一般模型：个元素，从3个不同的元素个不同的元素a,b,c中取出个元素，然后按照一中取出2个元素然后按照一定的顺序排成一列一共有多少种不同的排列方法？排成一列，定的顺序排成一列，一共有多少种不同的排列方法？

1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。

二次风机
启动条件（各条件与）二次风进口风门开度小于5% 二次风机液偶位置反馈小于5% 任一高压流化风机运行任一引风机运行无二次风机跳闸条件存在入口风温不低于0度二次风机轴承温度低于70度二次风机液偶进出口油温低于85度电机绕组绕组温度不高于85度电机轴承温度不高于85度
MFT动作：
关减温水所有门，（脉冲）。总管，左右一二级，调门切手动) 保护关油阀，（进油，回油，1,2#油枪进油阀）。（软，硬）点火油枪退。（软，硬）停给煤机。（软，硬）停冷渣机。（脉冲）强制减压站气动减压调门开度为0 送信号至脱硫脱销。（硬接线，MFT板）锅炉MFT动作后，如果3#气机与发电机未跳闸由运行人员依据运行规程进行相应处理。汽包水位高3值跳汽机（汽机主保护，未投）
顺序控制
1 定义：将生产过程的部分工艺按照事先规定好的条件及顺序进行自动操作。可以是闭环的，也可以是开环的。炉膛吹灰系统化学水处理顺控系统输煤程控系统
采集数据按用途分类： 1 监测 2 报警 3 控制 4 联锁保护。数据切除操作需要注意切除数据原点和引用点切除数据和切除逻辑的区别
保护跳闸（各条件或）

两台引风机均跳闸二次风机保护跳闸一次风机停止二次风机液偶出油温度大于95度二次风机前后轴承震动大于11mm/S延时3秒二次风机轴承温度大于95度电机轴承温度大于95度电机绕组温度高于145度。
一次风机
启动条件（各条件与）：一次风机进口风门开度小于5% 任一高压流化风机运行任一引风机运行无一次风机保护跳闸条件入口风温低于20度一次风机轴承温度低于70度电机绕组温度不高于85度保护跳闸（跳一次风机）：两台引风机均跳闸 2台流化风机均跳闸，延时15秒风机前后轴承震动大于11mm/S延时3秒风机轴承温度大于95度电机轴承温度大于95度电机绕组温度大于145度。
3#机组主要联锁保护
第一章基础知识热工联锁保护
定义：机组出现危险工况时，自动采取措施，防止事故产生和避免事故扩大，保证设备及人身安全。当故障发生时，热工保护系统的优先级最高。超越运行人员的手动操作，按照预先规定的方式处理事故。联锁：热工保护系统的一种重要技术。联：联动；锁：闭锁。
1 锅炉主要控制及联锁保护主汽压、主汽温度、汽包水位、炉膛安全监控系统（FSSS）。 2 汽轮机的热工保护汽机本体保护( 轴向位移、缸胀和差胀、超速（零转速）、振动监测及保护、偏心、轴承温度高等)和润滑油压力低、真空度低等。 3 机、炉、电大联锁保护（3#机未投）单元机组是一个整体。燃料锅炉汽轮机发电机电网任何一个故障都会影响整个系统。

保护跳闸

MFT动作后延时15秒且炉膛压力低于-2489pa 引风机保护跳闸引风机液偶出油温度大于95度引风机运行60秒后且出口门在关位风机前后轴承振动大于11ห้องสมุดไป่ตู้m/S，延时3秒引风机轴承温度大于95度引风机电机轴承温度大于95度电机绕组温度高于95度。联锁启动引风机投入联锁另一台引风机跳闸
点火吹扫逻辑无MFT跳闸条件总风量大于25% 所有给煤机全停所有进油快关阀，油枪油阀全关任一引风机运行一次风机运行二次风机运行任一流化风机运行一次风量大于流化风量所有二次风调门开度大于50% 所有播煤风调门大于10% 汽包水位正常炉膛压力正常时间：300秒
能引起炉膛负压过大的原因。（讨论）在高负荷时炉膛突然灭火送引风机联锁失败
高压流化风机启动允许：1风机出口门全开。 2任一引风机运行。连锁启动（各条件或）： 1联锁投入，运行高压流化风机跳闸； 2.联锁投入，母管压力低于15Kpa。
风机出口电动门
高压流化风机出口电动门超驰开（各条件或）：顺控启动高压流化风机；高压流化风机投入联锁且出口电动门全关；

引风机出口电动门超驰关闭：另一台引风机运行超驰开（各条件或）：两台引风机均停，延时60秒。
风机逻辑

引风机
启动条件（各条件与）：无引风机跳闸条件存在；引风机入口调节门开度小于5%；引风机出口门关闭；引风机液偶反馈低于5%；引风机导叶开度反馈低于5%；引风机液偶出口油压力低不存在；引风机液偶出口油温不低于20度；引风机液偶出口油温不高于85度；引风机轴承温度不高于85度；引风机电机轴承温度不高于85度；电机绕组温度不高于85度。
给煤机逻辑启动条件（与逻辑）：无给煤机跳闸条件出口门全开变频器输出小于5% 无报警信号投给煤机条件（1无MFT,2平均床温大于450℃）给煤机保护跳闸： MFT 给煤机出口闸门关闭延时3秒（建议不设时限）超温堵煤报警关出口门，停给煤机给煤机故障停机，关出口门
事故放水电动门
联锁开：汽包水位高于125mm 联锁关：汽包水位低于50mm
锅炉DCS逻辑

MFT
触发条件：两台引风机停止一次风机停止汽包水位小于-280mm（延时3秒，三取二未投）汽包水位高于200mm（延时3秒，三取二未投）总风量小于25%，延时15秒床温大于1020度，（高报950度，低报760度）.(24取12). 床温小于650度，（正常燃烧与给煤机运行）。炉膛负压大于2489Pa延时3秒（4取2）炉膛负压小于-2489Pa延时3秒（4取2）汽轮机ETS动作停炉且 3#发电机有功功率大于15MW 时流化风机两台跳闸延时15秒手动停炉
油燃料跳闸（OFT）油燃料跳闸是为了防止在OFT情况下燃料流入炉膛，以免锅炉熄灭后生成爆燃物。OFT条件为： 1) 任意油角阀开时, 油母管压力低3值(延时5s)。 2) 任意油角阀开时, 进油快关阀全关。 3) MFT有首出信号。 4) 进油阀全开17秒内，火检无火。当发生OFT时，所有的油枪和油枪跳闸阀全部同时跳闸。