CHAP24-20 [兼容模式]
vue单页面项目SEO优化问题

vue单页⾯项⽬SEO优化问题之前⽤vue做了⼀个动态官⽹项⽬,后期客户要求seo,百度上之前搜索不到官⽹地址,后来在项⽬的⼊⼝⽂件index.html页⾯加上了,固定的meta标签,加上name名为keywords、description的meta标签。
例⼦:<meta charset="utf-8">//下⾯这个meta标签是ie8的专⽤标记,指定ie8浏览器器模拟特定版本的ie浏览器渲染⽅式,下⾯指定的是edge<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">//在ie、360等浏览器打开时,默认使⽤极速模式,然后是兼容模式,然后是标准模式<meta name="renderer" content="webkit|ie-comp|ie-stand">//seo相关,百度收录时,的描述⽂字<meta name="description" content="第⼗七届xxxxx医学⼤会">//seo相关:百度搜索时的关键字,就是⽤那些关键字可以搜索到此⽹站<meta name="keywords" content="中国国际xx医学⼤会,第⼗七届,xx,医学,国际">以上做了个简单的seo优化,这个项⽬有⼏个官⽹,但是其中只有⼀个官⽹要求seo,也就是在百度能够搜索到,当时为了应急,就写死了,但是,其它的⽹站也就会受到⼲扰了,也就是对于⼀个项⽬对应⼏个官⽹,写死的meta标签做seo是不科学的。
于是下⾯⼜来寻找更科学的seo优化⽅案,下⾯是⼀些相关连接,很感谢作者:⽂中提到了关于vue单页项⽬的⼀些seo优化⽅案:⾸先想vue、react、angular三⼤前端框架都有spa页⾯,做起来seo就很⿇烦,当然,不是必须要求⽤这三个框架就必须采⽤spa的开发模式,但是spa前后端分离的形式真的是太⽅便了,如果不采⽤spa⽅式进⾏开发,⽤古⽼的混合开发⾃然不会存在seo的问题,但是我们现在⼤多采⽤的是spa的形式开发的,⽅案1:服务端渲染上⾯这个截图是vue作者,为解决seo优化所提出的⼀个⽅案,服务端渲染(ssr):官⽹链接:如果项⽬刚开始就考虑到seo,采⽤服务端渲染,那么就⽤服务端渲染就得了。
微信公众号开启服务器配置JAVA

微信公众号开启服务器配置JAVA第⼀步:了解配置(建议先不要⽴即配,完成步骤⼆后再配置)URL 是⽤来接收公众号的消息回调和事件回调的;Token 由开发者可以任意填写,只⽤于⾸次微信校验服务器⽤,校验通过后就没⽤了;EncodingAESKey 由开发者⼿动填写或随机⽣成,将⽤作回调消息体加解密密钥,如果设置了兼容模式(明⽂密⽂共存)=> 可以⽤EncodingAESKey 来加密明⽂得到密⽂,和微信的密⽂⽐较来校验接收数据的安全性;安全模式(只有密⽂,需要解密),⽤EncodingAESKey 解密得到微信的消息体;第⼆步:验证消息来⾃微信服务器在微信公众平台配置好服务器信息后,微信服务器将⽴即发送GET请求到填写的服务器地址URL上(其他的消息回调都是POST),我们要校验微信的信息,并按⽂档规定返回;⾄此我们配置的服务器就配置成功了;此步骤具体代码:public String weChatOffiaccountCheckCallback(String echostr, String signature, String timestamp, String nonce) {String[] valueArray = new String[]{"配置的Token", timestamp, nonce};Arrays.sort(valueArray);String s = StringUtils.join(valueArray);String encode = DigestUtils.sha1Hex(s);return signature.equals(encode) ? echostr : "fail";}第三步:在微信公众平台配置服务器信息(就是第⼀步的三个配置项)。
天津市第二十中学2023-2024学年高三上学期12月月考英语试题

天津市第二十中学2023-2024学年高三上学期12月月考英语试题一、单项选择1.—Linda, do you know Jia Ling has become the highest grossing female film director in China after directing her first film?—Wow, ________.A.go for it B.good for her C.all the best D.what a coincidence 2.________ the 24 Solar Terms on Chinese lunar calendar, the farmers in ancient China accomplished the great astronomical and meteorological achievement with their intelligence and experience.A.Basing B.Based C.To base.D.Having been based 3.Crowds of people ________ to watch the charity of performance last night.A.worked out B.turned out C.made out D.reached out4.In order to make her 45th birthday impressive, I intend to buy her a wonderful present, that is not expensive but very meaningful.A.it B.one C.the one D.this5.They are hoping for a return to normal ______ the war is over.A.now that B.even if C.as though D.in case6.________ is often the case, I assume, is the fact that when looking back, the bittersweet senior life is always one’s highlight in pursuit of dream.A.As B.Which C.That D.What7.I ________ a new alarm clock the other day at Taylor’s when I heard someone singing a familiar song.A.bought B.was buying C.has bought D.would buy 8.There _______ a six percent drop in the consumption of such drinks by the end of last month.A.is B.was C.will be D.had been 9.Reading materials for children entered schools to help them develop the habit of financial management at a young age.A.having intended B.intending C.intended D.having been intended 10.According to a newly released regulation on online video services, no one _____ generate, release or spread fake news or information by using such technologies.A.can B.shall C.will D.may11.Ann was much kinder to Peter than she was to the others, ________, of course, made all the others upset.A.which B.who C.what D.that12.After talking to Lucia about the advantages of the new robotic vacuum cleaner for hours, she was finally ________ buying one next month.A.in need of B.in defence of C.in place of D.in favor of13.At minus 130℃, a living cell can be ________ for a thousand years.A.preserved B.protected C.spared D.developed 14.History is the best teacher. It ________ records the development path of each country and foretells the future to us.A.apparently B.conventionally C.faithfully D.eventually 15.—The student union is looking for volunteers for the promotion of rubbish-sorting Would you like to join in?—________. Everyone should do his bit.A.You asked for it B.You betC.You have my word D.You’ve got me there二、完形填空On Christmas of 2017, I was born again. We like to spend our Christmas holidays somewhere warm abroad, and that year we 16 Uganda. Nature, wildlife, and sunny days were a 17 when it was so 18 and dark in Europe. Life was beautiful, and we had a rental car and a busy schedule ahead to explore the country.This is where this short travel story turns into one of my most 19 travel experiences. At Murchinson Falls National Park, we had a car accident. I lost 20 of the car, and it rolled over, destroying windows, chassis (底盘), and the engine. But we were alive! My right arm was 21 injured, but we 22 to walk to our lodge (旅馆),not far inside the 23 . In the lodge,I was 24 to learn that there was a pretty decent American hospital in Masindi that was just a one-hour drive away. Moreover, one of the lodge’s guests was a nurse who 25 to the wound while we were waiting for the taxi. The hospital took care of us and after a couple of injections and stitches (缝合), I was 26 to head to our new hotel in Masindi; however, my wound required daily 27 and more injections, so we were 28 to stay in town for a few days.The town’s highlights were the market and our 29 visit to the hospital, so we 30 looking for the small things, 31 mod with the medical staff and the people in the market, and learning more about their customs.We learned to slow down. When we were allowed to 32 we took a road trip through the country to see something else. We did not care about our travel bucket 33 anymore—we were 34 , and we wanted to enjoy Uganda’s unique nature and its people. In the end, our Uganda trip was not about the places that we saw, but the people that we met. It was travel for 35 more than sightseeing.16.A.recommended B.chose C.predicted D.informed 17.A.blessing B.barrier C.limitation D.balance 18.A.complicated B.mysterious C.crowded D.cold 19.A.doubtful B.wonderful C.scary D.imaginary 20.A.sense B.sight C.control D.direction 21.A.severely B.permanently C.partly D.deliberately 22.A.discovered B.failed C.continued D.managed 23.A.spot B.accident C.country D.park 24.A.curious B.happy C.shocked D.creative 25.A.cleaned B.cured C.swept D.repaired 26.A.fortunate B.grateful C.ready D.relieved 27.A.movement B.dressing C.suffering D.exercise 28.A.asked B.forbidden C.permitted D.taught 29.A.occasional B.daily C.risky D.awful 30.A.put off B.carried on C.insisted on D.ended up 31.A.chatting B.arguing C.bargaining D.meeting32.A.exercise B.wander C.leave D.escape 33.A.guide B.list C.approach D.memory 34.A.awake B.sensitive C.allergic D.alive 35.A.experiment B.explanation C.experience D.reflection三、阅读理解Give a little sunshine!The Council on Aging (COA) runs a telephone friendship project called the Sunshine Call Program, matching over-60s with a friendly volunteer for a daily chat over the phone. The aim is simple — to help ease the loneliness and repair social networks.Are you ready to add a little sunshine to a senior’s life?The Sunshine Call Program initially links a volunteer with an isolate (独居的) senior for a daily call When comfortable the volunteer introduces a second senior to the call. Then another, until there are four seniors to one volunteer on what is essentially a conference call. Without having to leave the house, you will help the seniors meet and make new friends. They will then exchange phone numbers to chat on their own and reduce their isolation.What are the volunteer qualifications?V olunteers must have access to the Internet and be willing to be trained on the use of a chat app. COA will provide all supplies required to make the calls. Besides, volunteers must agree to participate in monthly meetings with other volunteers and guest speakers. All volunteers must be willing to provide a recent Criminal Record Check, the cost of which will be borne by COA.Andthe most important volunteer qualification is a sense of caring and a desire to help seniors in the community!If you wish to volunteer with our Sunshine Call program, never hesitate! Just CLICK HERE to fill out the application form.36.Why does the passage mention Sheila’s experience?A.To show her lonelinessB.To share a sweet memory.C.To stress the value of COA.D.To praise Rianne’s kindness.37.One of the responsibilities of volunteers is__________.A.making weekly calls to seniorsB.visiting seniors during holidaysC.introducing new friends to seniorsD.teaching seniors to use smart phones38.If you want to be a volunteer, what are you required to do?A.Learn the use of a chat app.B.Prepare a computer by yourself.C.Offer a letter of recommendation.D.Have relevant working experience.39.What is the purpose of the passage?A.To inform the readers of COA.B.To invite seniors to sign up for COAC.To introduce volunteer work in COA.D.To advertise for new volunteers for COA.40.Which of the following is the passage probably taken from?A.A newspaper for teenagers.B.A website of an organization.C.A guide for travelers.D.A magazine for the elderly.It probably was not easy to translate the tough talks at the high-level meeting between the U.S. and China in Anchorage. Chinese female translator Zhang Jing became an online hit in China for remaining unflustered(从容不迫的), graceful, and accurate.One video of the first session of the diplomatic talks shows how Yang Jiechi starts his response to the American side at 8.30 minutes, going on until the 24.36-minute mark. Next to him, interpreter Zhang Jing is fiercely taking notes. When Yang finishes speaking, he glances to foreign minister Wang Yi on his right to let him speak, after which Zhang says, “Shall I first translate?” While the U.S. side was awaiting the translation, Yang then says: “Ok, you translate,” adding in English: “It’s a test for the interpreter,” after which the American side says “We’re gonna give the translator a raise!” Zhang then goes ahead and calmly translates Yang’s entire 15-minute speech.To give a speedy translation of such a lengthy off-the-record speech is seen as a sign of Zhang’s utmost professionalism as an interpreter, which many on Weibo praise. “She’s my idol,” multiple people write.On Sunday, the hashtag “China-U.S. Talks Female Interpreter Zhang Jing” had reached 200 million views, but it is not the first time for Zhang, who was previously called “the most beautiful interpreter” of the National Congress in 2013.Being an interpreter is generally regarded an exciting and attractive job by many netizens, as the career involves much traveling and international contacts. But the ability to master another language than Chinese is also often admired.“Translators are usually the ‘heroes behind the scenes’, “one commenter writes, pointing out how rare it is for an interpreter to hit the limelight (聚光灯) like this.“There are still people saying it’s not important to learn English,” another Weibo user writes: “But if that were true, how could we educate brilliant interpreters like her? How else could we quarrel with Americans at the conference table?!”Many who write about Zhang on Weibo say that she is an example or a role model to them: “I hope that my spoken English one day would be as excellent as hers. This motivates me to try even harder.”41.We can infer that during the first session of the talk, ________.A.Zhang Jing seemed fierce because of Yang Jiechi’s long talkB.Zhang Jing wrote down fierce words in response to the US sideC.it was beyond Zhang Jing’s ability to follow Yang JiechiD.Zhang Jing concentrated on translating in an intense atmosphere.42.What does the underlined “it” in the fourth paragraph refer to?A.Zhang Jing was called “the most beautiful interpreter”.B.Zhang Jing became an online hit several years ago.C.Zhang Jing interpreted for the China-U.S. diplomatic talk.D.Zhang Jing gave a speedy translation of a long speech.43.Why did the American side say “We’re gonna give the translator a raise!“A.Because the American side wanted to employ Zhang Jing due to her talent.B.Because the American side thought Zhang Jing got a low salary.C.Because the American side considered Zhang Jing’s job quite tough.D.Because it was impossible for Zhang Jing to assume the task except by a pay rise. 44.Zhang Jing is taken as a good example of________.A.quarrelling with the American sidesB.enjoying an exciting and attractive jobC.showing the significance of learning English wellD.stressing the importance of educating brilliant interpreters45.Where does the passage least possibly taken from?A.Science report.B.The Internet.C.Wechat official account.D.Newspaper.As people are becoming more socially conscious about where their food comes from and how it impacts the planet, they are choosing animal-free plant-based options. Cow-free meat has been around for quite some time and the popularity of brands like Beyond Meat and cultivated meat from Aleph Farms and others are soaring. While there are a large number of plant-based milk substitutes, none of them have the same taste of cow’s milk. Now, an Israeli food-tech startup Remilk created real dairy products without harming a single cow or the planet.The company stresses that their product Remilk is not a milk substitute but rather is the realdeal. Made from a special process called microbial fermentation (微生物发酵), milk is manufactured in a lab instead of in a cow. And the end product is very healthy. “In a very simple way, we take the gene that encodes for the milk protein,” said Aviv Wolff, CEO of Remilk.”The gene functions as an instruction book for the production of the protein it encodes. And so, we insert the gene into a microbe that we’ve developed and it instructs our microbe to produce the specific protein in a very efficient way.”The company says that the lab-produced milk tastes identical to the real thing and they hope to eventually replace cows by creating every dairy product sold. They expect to roll out plant-based cheese and yogurt in addition to milk. “Remilk was founded with the mission to stop using animals to produce our food because, as dairy lovers, we realize that giving up on milk is not an option,” Wolff said. “But today’s milk comes with an unreasonable price tag. The dairy industry is destructive to our planet, our health, and our animals, and is simply not sustainable anymore.”The environmental price tag of dairy farming is way too high. According to the World Wildlife Fund, dairy cows add a huge amount of greenhouse gasses to the atmosphere and contribute to global warming and climate change as well as foul the air around them. Dairy operations consume large amounts of water and run-off of manure (粪肥) and fertilizers from these farms get into local waterways. The production of Remilk uses only 5 percent of the resources and produces only 1 percent of the waste of producing cow’s milk according to the company. And they accomplish this by being 100 percent cruelty-free unlike dairy farms. 46.What distinguishes Remilk from other milk substitutes?A.It enjoys broad popularity.B.It has the highest output.C.It comes in various flavours.D.It tastes the same as cow’s milk.47.What is paragraph 2 mainly about?A.The production of Remilk.B.The nutritional value of Remilk.C.The role of gene in making protein.D.The process of microbial fermentation.48.What can we know from Wolff’s words in paragraph 3?A.Remilk was set up for animal protection.B.Dairy industries should be shut down.C.Remilk aims to produce animal-free food.D.Prices of cow’s milk are soaring these days.49.What does the underlined word “foul” probably mean in the last paragraph?A.Clean.B.Heat.C.Pollute.D.Consume.50.What can we infer from the passage?A.Drawing on gene technology, Remilk has developed a variety of dairy products.B.Conventional dairy industry is anything but eco-friendly.C.The new technology adopted by Remilk transforms the gene of cows.D.It’ll be some time before the public get accustomed to the milk substitutes.“Girls are weak, and boys are strong. This is what is being subconsciously communicated to hundreds of millions of young boys and girls all over the world, just like it was with me,” said American actor Justin Baldoni. As a boy, all he wanted was to be accepted by other people. That acceptance meant he had to pretend to be strong when he was weak, confident when he felt insecure, and tough when he was actually hurting.Is that a healthy lifestyle? A member of the CPPCC Standing Committee might say “yes”. In his proposal, he spoke of a need to “prevent the feminization of male youths”. In response to his call, China’s Ministry of Education has recently demanded that schools should hire more physical education teachers and improve teaching methods to cultivate masculinity in students.The response has been widely debated online, with many people saying that it reinforces gender stereotypes. The state broadcaster CCTV wrote on its Weibo account, “Education is not simply about cultivating men and women. It’s more important to develop a willingness to take responsibility.” You might be wondering now: What is masculinity, and why is this so controversial?Well, by itself, “masculinity” refers to the qualities traditionally considered to be typical of men. While there is not really a single “correct” set of qualities, the term is often associated withstrength, courage, assertiveness, and emotional control. Sometimes, however, these seemingly admirable qualities can be extended in unrealistic ways. But boys are also human. Blindly asking them to control their feelings “like a man” can only increase their stress when they grow up.As an educator who has spent years teaching in China, I agree that attaching more importance to physical education would definitely benefit students. Sports provide opportunities for physical fitness. More importantly, they can help develop lifelong skills, such as leadership and communication skills. However, putting the emphasis on masculinity is far from a sound reason for which to do so.It is unnecessary for all boys to build up their muscles, but it is essential that they all learn how to be strong inside. It is also fine for boys to cry and to show their weakness. Schools should work on equipping students with the skills and values they will need to be successful in life, not reinforcing stereotypes of masculinity borrowed from a bygone age.51.Why did young Justin Baldoni think it necessary to pretend to be what he was actually not?A.He was trying to be strong and confident.B.He wanted to be accepted as a real man.C.It was necessary for an actor to be strong and tough.D.He felt it secure and safe to do so.52.The underlined expression “masculinity” in Paragraph 2 most probably means “__________”A.manly qualities B.potential abilitiesC.self-centredness D.steady strength53.What is the argument against the demand of China’s Ministry of Education?A.It is necessary to prevent the feminization of male youths.B.Physical education should be paid more attention to.C.We should teach students according to their individual qualities.D.Importance should be attached to developing students’ sense of responsibility. 54.What can we learn from the passage?A.Masculinity is out of date.B.Masculinity is overstated.C.Masculinity shows physical strength.D.Masculinity only focuses on physical fitness.55.What does the author want to say in the article?A.We should do everything we can to guarantee students’ health.B.Schools should differentiate between boys and girls while educating them.C.It is important to prepare students with necessary skills and right values.D.It is time to weaken stereotypes of masculinity.阅读下面短文,按照要求用英语回答问题。
VoNR语音解决方案

VoNR Qos要求
5QI特性列表
VoNR所需承载
3GPP协议根据资源类型、优先级、时延等性能特征定义了5QI,描述了 QoS流在UE和UPF之间端到端接收分组数据处理特性。
5QI 等级
1
2 3 4
5
资源 类型
VoNR是全IP条件下的端到端语音解决方案,其业务特点决定在NR网络 侧需要使用多种类型承载来支持。所使用的的承载包括信令承载和业 务承载:SRB、DRB。
语音业务载组合: SRB1+SRB2+1xAM DRB+1xUM DRB UM DRB为5QI=1 AM DRB分别为5QI=5
视频业务承载组合: SRB1+SRB2++1xAM DRB+2xUM DRB, UM DRB为5QI=1和5QI=2 AM DRB分别为5QI=5
• 扩展音频带宽:50Hz – 16kHz,支持人类听觉的全带宽,高娱乐
品质的音乐编码
高清晰高保真语音体验
• 网络部署初期,传统4G终端较多,EVS采用AMR兼容模式
• 网络成熟期5G终端渗透率提高后,5G终端采用EVS提升语音质 量
目前:H.265/HEVC: 比上一代视频大小减少39 – 44% 未来:H.266/VVC: 比上一代视频大小减少40%+
视频画质不变前提下,数据 量减少40%以上
VR应用结合 /
R16定义IVAS[2] 语音编码标准,支持更好的抗丢包能力,可面向VR 应用带来沉浸的效果,还能在EVS 的基础上进一步提升抗丢包能力
可与VR应用结合
[1]VoNR起呼阶段不依赖系统间互操作,但是移动过程中如果遇到无信号、强干扰等问题也需要系统间互操作保障语音连续性
专题06 语法选择20篇(广州专用)(期末真题+名校模拟)-2024-2025学年八年级英语上学期期

2024-2025学年八年级英语上学期期末复习查缺补漏冲刺满分(牛津深圳版)专题06 语法选择20篇(广州专用)期末真题+名校模拟(2022上·广东广州·八年级广州四十七中校考期末)阅读下面短文,按照句子结构的语法性和上下文连贯的8.A.healthy B.health C.healthily D.unhealthy9.A.a B.an C.the D./10.A.lose B.lost C.losing D.have lost11.A.Make B.Making C.Made D.Makes12.A.are B.am C.is D.was13.A.little B.few C.a little D.a few14.A.quick B.quicker C.more quickly D.most quickly15.A.you B.your C.yours D.yourself(2022上·广东广州·八年级增城中学校考期末)Throughout the year, there are many activities at school. One of 16 activities of the year is the food collection. For the past few years, this 17 very successful. Each school does its food collection 18 . However, most of the time it is set up in a similar style.In my school, it usually lasts for 19 weeks. Students bring their food 20 home. The food should be kept for 21 long time, such as canned food and pastas. We 22 hold activities outside the school. Some students go door to door and ask people 23 them some food. Some set up boxes in churches and 24 areas such as stores or cinemas. The students all work hard and the members of the neighborhood are very supportive.After that time is over, we bring the collected food to our local Community Table. The families in our community can go for a warm meal 25 they need to. Usually, a group of students go with one teacher to send the food.I 26 food with our teacher last year. And I was 27 to see so many families under the problem of hunger.I was pleased that 28 school could help out all of those families. We do this several times each year.29 great activity! Sure, we 30 change the world, but we can do our best to make our world a better place.16.A.popular B.more popular C.most popular D.the most popular17.A.is B.was C.been D.has been18.A.different B.differently C.more different D.difference19.A.few B.little C.a few D.a little20.A.from B.at C.to D.into21.A.a B.an C.the D./22.A.too B.also C.either D.as well23.A.give B.giving C.gave D.to give24.A.others B.another C.other D.the others25.A.so B.if C.though D.but26.A.send B.sends C.sent D.will send27.A.surprise B.surprised C.surprising D.surprises28.A.we B.us C.our D.ourselves29.A.How B.How a C.What D.What a30.A.can’t B.needn’t C.shouldn’t D.mustn’t(2022上·广东广州·八年级校考期末)Marco looked at the basketball hoop(篮圈)and threw the ball up. “Score!” Marco shouted as the ball went 31 the basketball hoop. “You won this time, but next time I 32 better than you, Marco!” “I wish we could play at the park. But the basketball hoop in our neighborhood park 33 broken since last Friday. I guess there 34 nothing we can do.”Marco and Kim walked past the recycling center. They saw Mr. Morse 35 plastic, paper and metal things there. Marco looked at all the old things 36 for a long time. “Well, wonderful! That gives me 37 idea!” he said. “Mr. Morse, do you have anything for us to reuse to make a basketball hoop?”Mr. Morse picked up a plastic basket. “I think you can take it 38 you are going to make one.”“It looks useless, old and broken. I want a new basketball hoop!” said Kim.“ 39 things is a great way to stop waste.” said Marco. “Isn’t it also meaningful to make something on our own?”“That sounds 40 ! I guess we can try,” said Kim, “but I still don’t believe it will be as 41 as a new one.”They took the basket to Marco’s house and found some wood in an old garden. Together they made a post and a backboard 42 time later, when each part was ready, they took everything to the park and set up the hoop.“Wow, I was wrong.” said Kim. “It is worth 43 it and it looks better than I thought! I’m happy that we made our 44 basketball hoop. We can play basketball here now.” The two friends played until dinner time and enjoyed 45 .31.A.past B.through C.across D.over32.A.play B.plays C.will play D.to play33.A.has been B.was C.will be D.have been34.A.were B.are C.was D.is35.A.collects B.collected C.collecting D.to collect36.A.quiet B.quietly C.more quietly D.quieter37.A.a B.an C.the D./38.A.so B.because C.if D.but39.A.Reuse B.Reuses C.Reusing D.Reused40.A.interest B.interests C.interested D.interesting41.A.good B.well C.better D.best42.A.Some B.Many C.A few D.Any43.A.do B.to do C.doing D.does44.A.one B.first C.the first D.ones45.A.them B.they C.their D.themselves(2022上·广东广州·八年级统考期末)There was once a king who had a great palace with a wonderful garden. He was happier than 46 else there. In the garden, there lived all kinds of animals. All of them enjoyed 47 there.The king was very happy with the whole garden except for 48 old tree in the centre of the garden. It was 49 old and dry that the king hated it very much. Finally, the king ordered some people 50 it down and turn the place into a swimming pool. 51 after the tree was cut down, the animals left the garden. Without the animals, the garden was not 52 before. The king was sad, but he didn’t know what had happened.A young man went to the king, and said he could 53 what had happened. “This was because you cut the old tree down.” said the young man. “There 54 some moths (飞蛾)living in the old tree. Birds needed to eat the moths and then they produced wastes for plants to grow. The plants then attracted many 55 animals to your garden. The animals wouldn’t leave your garden 56 you cut down the tree. So the tree is important 57 your garden because it can make your garden beautiful.”“Excellent!” said the king, “I’ll make you 58 rich if you make my garden beautiful again.”“I’m afraid you will spend many years on it. It 59 many years to get the natural balance (生态平衡).” said the young man.The king was sad. This was 60 time he realized the importance of the tree. But all he could do was just to wait.46.A.someone B.anyone C.no one D.everyone47.A.them B.their C.theirs D.themselves48.A.a B.an C.the D./49.A.so B.very C.too D.quite50.A.cut B.cutting C.to cut D.for cutting51.A.And B.But C.Or D.So52.A.as more beautiful as B.so beautiful than C.more beautiful as D.as beautiful as53.A.explain B.explains C.explaining D.to explain54.A.was B.were C.is D.are55.A.other B.others C.another D.the other56.A.if B.though C.so D.unless57.A.of B.to C.towards D.on58.A.to become B.becoming C.become D.becomes59.A.take B.takes C.took D.will take60.A.first B.one C.the first D.the one(2022下·广东广州·八年级统考期末)阅读下面短文,按照句子结构的语法性和上下文连贯的要求,从各题所给的项中,选出最佳选项,并在答题卡上将该项涂黑。
2023-2024学年江苏省常州市第二十四中学教育集团七年级上册期中英语试卷(含解析)

2023-2024学年江苏省常州市第二十四中学教育集团七年级(上)期中英语试卷一、单选题(本大题共15小题,共15.0分)1.在A、B、C、D四个选项中,选出划线部分读音与其余三个不同的选项。
A. chatB. gradeC. ageD. wake2.在A、B、C、D四个选项中,选出划线部分读音与其余三个不同的选项。
A. restB. letterC. sheD. else3.在A、B、C、D四个选项中,选出划线部分读音与其余三个不同的选项。
A. onlyB. hopeC. shopD. hero4.在A、B、C、D四个选项中,选出划线部分读音与其余三个不同的选项。
A. studentB. clubC. usuallyD. museum5.在A、B、C、D四个选项中,选出划线部分读音与其余三个不同的选项。
A. startB. quarterC. cardD. pardon6.Here is ______ orange jacket. Is ______ jacket Frank's?A. the, theB. an, aC. an, theD. the, a7.They are my friends. ________ name is Sam, and ________ is Jenny,A. He, sheB. His, herC. His, sheD. Her, her8.The class started ______ six o'clock ______ the afternoon of 16 October.A. at; onB. on; onC. at; inD. in; on9.—I want to visit Nanjing Museum next Monday. Can you come with me?—Well, Nanjing Museum ______ on Monday. Let's go there another day.A. isn't openB. isn't closedC. doesn't openD. doesn't close10.Dancing is good ________ us and many girls in our class are good ________ it.A. in, inB. for, forC. at, atD. for, at11.The warm morning sunshine comes in through the window, and it makes the classroom ________.A. cleanB. bigC. beautifulD. bright12.It's a quarter to seven! Go to wake ______. It's time ______ school.A. up him; forB. him up; toC. him up; forD. up him; to13.The Maths exam was really easy. But still, ______ students didn't pass it.A. fewB. a fewC. littleD. a little14.— ______ is it from the city library to your school?— It's about half an hour's drive.A. How longB. WhenC. How farD. How soon15.— ________ do you go to the Reading Club every week? — Twice.A. How much timeB. How many timesC. How oftenD. How long二、完形填空(本大题共10小题,共10.0分)Lily goes to school in America this year. Life is different and she wants to share with us. Here's something about her.She's in New York for two weeks. She likes the (16) . The teachers and students are friendly. She (17) a diary (日记) in English every (18) . Her English teacher says it is a good way to (19) English. Most of the students in her school come from America. There are no Chinese students, (20) she has to speak English, she must (21) hard! She wants to have (22) , but this does not bappen so easily. She is afraid to talk (23) other people in school! She likes her classmates, but it's hard for her to understand (理解) and join (24) in their talks. She misses (想念) her (25) friends and her family.16.A. library B. concert C. school D. dinning hall17.A. does B. keeps C. makes D. writes18.A. year B. month C. week D. day19.A. speak B. read C. use D. spend20.A. so B. but C. because D. then21.A. sweep B. spend C. study D. cook22.A. friends B. meals C. coats D. postcards23.A. for B. to C. at D. from24.A. them B. us C. you D. they25.A. new B. old C. clever D. cute三、阅读理解(本大题共10小题,共15.0分)AHow do you make friends? Some students are sharing their ideas with us.I've made some good friends at the gym (体育馆)I go to. People there are very friendly. Talking tothem as I take exercise is a good way for us to get toknow each other.I can make more friends on the Internet because itkeeps me in touch with the whole world. I can getworldwide stories from my friends all over the world.I spend lots of my free time with people fromother countries. When I'm with them, I really get toknow what they're like and how easy they are to getalong with. They help me learn English.Although we are quite different, Adam and I havebeen close friends for 5 years. We have a lot to talk.We often play basketball together after school. We gofor a picnic at weekends. It's always a good time to bewith him.26.Who often plays basketball after school?A. Tom.B. Yumi.C. Anna.D. Peter.27.With the help of her friends, Yumi ________.A. takes more exerciseB. feels happier at picnicsC. learns English betterD. makes up more stories28.Anna has made some good friends ________.A. at her schoolB. in other countriesC. at the gymD. on the InternetBI am Kyra. I think my father is a little fat but he says he is not. He is only "pear-shaped(梨形的)". My mother has a very beautiful face. The skin(皮肤) on her face is soft. She has "skin like a peach".I have a little sister. We love her very much. My mother says that she is the "apple of her eye". My parents say I am lazy. I like to lie on the sofa and watch television. I also like to play computer games and eat snacks. My parents call me a "couch potato(沙发土豆)". They tell me I should do more sports but I don't like sport. It isn't my "cup of tea".I have a dog. His name is Freddie. Freddie sleeps a lot. He likes to play with his ball. At that time, he gets very excited—he "goes bananas".I have a cousin. She has red hair. We call her "carrot top" because of her red hair. She is really kind. I think she is "as sweet as sugar".Do yo like my writing? It is easy to tell you all about my family. It is really "a piece of cake".29.When ______, Freddie "goes bananas".A. he sleeps a lotB. he has nice foodC. he plays with his ballD. he meets my family members30.Kyra thinks ______ is "a piece of cake".A. playing computer ganesB. doing more sportsC. telling others all about her familyD. writing interesting articles31.According to(根据) Kyra's introduction(介绍) of her family, we know that ______.A. Kyra doesn't like doing sportB. Kyra's little sister has "skin like a peach"C. Kyra's mother has red hair, so we call her "carrot top"D. All the members in Kyra's family like eatingC"Early to bed and early to rise make a man healthy, wealthy and wise." This is an old English saying. It means that when we go to bed early, we can get up early the next morning. Then we will become healthy. We will also become rich and clever.This is true. To keep healthy, we must have enough sleep. Experts(专家) say that adults(成人) should get seven to eight hours of sleep a night. Teenagers need nine to ten hours of sleep. And school-aged children may need more than ten hours of sleep. Children who do not have enough sleep can't do their work very well. They won't be wise and they may not become wealthy!We also need exercise. Walking, running, swimming and playing games are all exercise. Exercise keeps us strong. It also helps the blood to move around the body. This is very important. Our blood takes the nutrition(营养) from food to all parts of our body.The head also needs blood. So exercise that moves the blood to our head helps us think better!32.What does the underlined word "rise" mean?A. Stand up.B. Get up.C. Sit down.D. Do exercise.33.If children don't sleep for 10 hours, they may ______.A. not be late for schoolB. hecoine wiseC. not study wellD. become rich34.A person needs exercise because ________.A. it helps make him healthyB. he has a lot of homework to doC. he is strongD. he is not strong35.Which of the following is NOT true?A. Exercise helps the blood to move.B. A teenager should have 9—10 hours sleep.C. If we have enough blood, we'll be wise.D. It's good for you to get up early and go to bed early.四、信息匹配(本大题共4小题,共6.0分)I'm Susan and I'm a mother of two children. (1) In the morning, I get up at 6 o'clock and then I cook (烹饪) breakfast for them. (2) After that, I go to a clothes shop. Linda is in the dance club now and she needs a pair of beautiful shoes. (3) I buy vegetables, meat and fruit for dinner. In the afternoon, I make my home clean. (4) At 6:30, we have dinner. In the evening, we watch TV for one hour from 8:00 to 9:00. After they sleep, I take a shower and go to bed. It is 10 o'clock. You see, a mother's life is so busy.A. Next I go to the food shop.B. We have a big family.C. Jack and Linda are my son and daughter.D. They are happy to get to school.E. At 7:15, I drive my car to take them to school.F. At 4:00, my children get home by school bus.36.A. A B. B C. C D. D E. E F. F37.A. A B. B C. C D. D E. E F. F38.A. A B. B C. C D. D E. E F. F39.A. A B. B C. C D. D E. E F. F五、阅读填空(本大题共1小题,共10.0分)40. There is a big (1) beautiful country in South America. It is easy (2) (see) it on the world map.It (3) (look) like a heart. Yes, it is Brazil, the biggest country with the most people in South America. Brazil is famous for (4) (it) beautiful landscape(风景). Let' s (5) (take) a look.In the north of the country, there (6) (be) the biggest forest in the world, the Amazon rainforest. It covers half of Brazil. It is home to many (7) (kind) of animals, from rare(稀有的) birds (8) some dangerousanimals, (9) cougars(美洲狮).In the west, on the border(边界) between Brazil and Argentina, is the Iguazu Falls. It is the (10) (two) widest waterfall in the world.The Amazon River flows(流) through Brazil. It is the second longest river in the world after the Nile in Africa.(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)六、单词拼写-单句(本大题共5小题,共5.0分)41.Maps are good for (地理).42.Weˈre going on a (野餐)tomorrow.43.What's your favorite outdoor (活动)?44.Time flies when you're having (乐趣).45.Lin Dan and Li Zongwei both played badminton very well. They were my (英雄).七、完成句子(本大题共6小题,共9.0分)46.学生们每天花20分钟做运动吗?Does it ?47.做早操为新的一天做好准备。
Facebook Chat 用户指南说明书

Facebook Chat User GuideBefore you install this module, you should make a backup of your site. The instance mode should be set to development before you begin the installation. Enter the console and navigate to run the command below.1. php bin/magento deploy:mode:set developer then goto /app/code folder. (If you don't see the code folder, you need to create one. After that create an Elfsight/FacebookChat folder and extract the extension files into this folder. If there are any files already in theElfsight/FacebookChat folder, remove them and replace with the new extracted ones).2. Next, open the console and navigate to run the command: php bin/magento setup:upgrade Important: If you’re installing the module in developer mode, you don't need to re-compile. If not, recompile and generate the browser static-content with the command below:1. php bin/magento setup:di:compile2. php bin/magento setup:static-content:deploySwitch the mode back to production after you complete the setup. magento deploy:mode:set production & make sure all file and folder permissions are correct.Backend settings:PHP: 7.0MySQL: 5.7Options:Name Default value DescriptionuserAccessToken Authorize with your Facebook account toconnect the chat widget to your Facebookpage.page Select the Facebook Page you need to connectto the chat from the list of your available pages. bubbleIcon fb-chat Select an icon for the chat bubble.bubbleText Add some call to action text to the bubble, ifnecessary.picture facebook Select the source of your user pic for the chatwindow.pictureLibrary Choose an appropriate user pic from imageslibrary. You can use the gender filter to find theright one.pictureCustom Upload a user pic from your computer. Werecommend square aspect ratio.name Elfsight Set the username for the chat. The widget usesthe name of your Facebook page as default.nameCaptionType replyTime Choose the caption type to display below theusername.nameCaptionReplyTime Typically replieswithin a day Choose one of the predefined estimated reply times to let your users know when to expect a response.nameCaptionCustom Set any text to be displayed below theusername.welcomeMessage Hi there! <br>Howcan I help you? Enter a welcome message or a greeting to display when the chat window is opened. Offer to help or ask a question to engage a website visitor in conversation.buttonText Start Chat Enter the chat trigger text to be displayed onthe button.buttonIconVisible TRUE Show/hide Facebook Messenger icon on yourbutton.position floating Choose the perfect display position for yourwidget. Floating Bubble will scroll along withyour website page. Embed Bubble is added asa button to a specified page area. Clicking onthe button will open the chat window. EmbedChat Window adds a window to a specifiedpage area.align right Align your chat widget to the left or to the right,or keep it in the center of the page.whereToDisplayChat allPages This setting is used in case you've installed thechat to your website template, and it's availableon each page of your website.excludedPages[].url Set the URL of the page where you don't wantto display the chat.specificPages[].url Set the URl of the page with the chat. showChatOnMobile TRUE Show/hide the chat widget on mobile devices.showChatTo allVisitors Select the category of visitors you want todisplay the chat for: all visitors, visitors whohave come to your website for the first time,visitors who had been on your website before.timeOnPage Set the number of seconds the website visitorhas to spend on the page to open the chatwindow automatically.timeOnSite Set the number of seconds the website visitorhas to spend on the website to open the chatwindow automatically.scrollPosition Set the scrolled page percentage for the chatwindow to open automatically.exiIntent Activate this setting to make the chat windowopen automatically everytime a visitor intendsto leave the website and close the browser tab.notifications bubbleBadge,tabTitle Select the kind of notifications to let your visitors know that chat window is opened and a conversation is active. These notifications catch the visitor's eye and encourage them to communicate with you.bubbleBackgroundColor rgb(255, 255, 255) Set the bubble background color. bubbleIconColor rgb(0, 132, 255) Set the bubble icon and text color. headerBackgroundColor rgb(250, 250, 250) Set the chat window header background color. buttonColor rgb(0, 132, 255) Set the start chat button color. buttonBorderRadius 8 Use this option to adjust your button's shape.Screenshots: Content。
介绍 ChatGPT

介绍ChatGPT——革命性的对话生成新工具今天,我想揭开ChatGPT 的神秘面纱——GANs*(生成对抗网络)的一个迷人的新应用程序,它在AI 社区中引起了很大的轰动。
对于那些不熟悉GANs 的人来说,它们是一种神经网络,它使用两个相互竞争的网络——一个生成器和一个鉴别器——来创建逼真的输出。
生成器创建假输出,而鉴别器则试图区分假输出和真实数据之间的区别。
通过这个来回过程,GAN 能够产生与真实数据无法区分的输出。
ChatGPT 采用了这一概念并将其应用于基于文本的对话。
它使用GAN 生成对输入文本的响应,使其能够与人类进行听起来自然的对话。
但这里有一个问题——ChatGPT 的回应只是在切线上触及现实。
虽然它们听起来很有说服力,但它们最终是GAN 的虚构创作。
这听起来像是一个缺点,但它实际上使ChatGPT 非常有用。
因为它不受现实的约束,ChatGPT 可以进行完全想象的对话并提供创造性的、开箱即用的响应。
例如,你可以问ChatGPT 如果它能飞会做什么,它可能会这样回答:“我会像雄鹰一样翱翔在天空,感受我翅膀下的风和飞行的自由。
”人类不可能想出这种类型的响应,但它完全在ChatGPT 的可能性范围内。
ChatGPT 使我们能够探索超出我们日常现实限制的可能性,这可能是非常强大的。
那么,如果ChatGPT 的响应只是切线地触及现实,为什么还要使用ChatGPT?因为有时候,我们需要的正是这种创造性的、富有想象力的思维来解决复杂的问题并产生新的想法。
ChatGPT 使我们能够探索超出我们日常现实限制的可能性,这可能是非常强大的。
所以,你有它- ChatGPT 揭秘!虽然它的反应可能并不总是植根于现实,但它们对于产生创意和进行富有想象力的对话仍然非常有用。
我希望你能尝试一下,看看它能为你解锁哪些新的可能性。
Using ChatGPT to write codeChatGPT 不限于英语。
它不仅可以处理其他口头语言,还可以编写代码片段。
- 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)。
CHAP 24‐20 交流发电系统¾目的–交流发电系统产生并控制电源系统使用的三相115V,400Hz的交流电。
¾综述–交流发电系统是3相、4线的交流电–交流系统的电源有4个:没有自动的电源选择优先级–没有自动的电源选择优先级。
¾电源分配:电源分配–AC TRANSFER BUS–MAIN BUS–GALLEYS–STBY BUS–TRU1,TRU2,TRU3¾电源品质–400HZ–115VAC–三相电¾控制–BPCU•RLY\EPC\LOAD SHED RLY\EPC\...–GCU•GCB 和BTB–SCU•APU GENP5顶板和电源系统相关的控制面板有3个:–P5‐13电表、电瓶和厨房电源面板–P5‐5发电机驱动和备用电源面板–P5‐交流系统、发电机和APU面板4交流系统发电机和人工作动各有什么现象?¾IDG电源馈线走向–馈线沿下部机身到达PDP–馈线有四处连接点:¾APU电源馈线走向–馈线有两个连接点:–APU电源馈线沿机身顶部走线。
电源馈线沿机身顶部走线¾外电源–沿下部机身到达PDP2,–有两个连接点:¾P6和P18板P6和P18板位于驾驶舱,大部分飞机系统的负载跳开关都位于这两个板驾驶舱大部分机系统的负载跳关都这个面板。
在这两个面板里包括:–热敏跳开关–继电器–二极管–导线¾电子设备舱电子设备舱包括以下部件:–组件–电源分配面部(PDP)–电瓶–继电器E4架E4架上有以下交流发电或与之相关的部件:–BPCU–PDP2(P92)–GCU2E2架E2架上有以下交流发电或与之相关的部件:–AGCU–GCU1–SCU–PDP1(P92)接线盒电源系统有许多接线盒。
接线盒中有许多不同的交流和直流负载的继电器。
大部分的接线盒位于电子设备舱或驾驶舱下部的前部机身飞机上大部分的接线盒位于电子设备舱或驾驶舱下部的前部机身。
飞机上主要的接线盒包括:–J4–J5–J9–J20–J22–J23–J24.GCU功能GCU有以下功能:–GCB和BTB控制–提供并控制IDG的励磁–在电源品质超限时保护电源系统和IDG–控制P5‐5和P5‐4板的电源系统指示–提供自测试功能以便排故¾GCU输入:输入–GCU1和GCU2电源:–GCU从两处感知3相电流强度:相电流强度–GCU从GCB得到电压信号。
–GCU1和GCU2有以下输入信号:–GCU监控IDG的滑油压力和频率信号–RTL信号¾GCU输出¾GCU故障安全模式当GCU进入故障安全模式时:–GCR断开–GCB断开–BTB闭合(如果断开)–GCU面板的GCU故障指示灯¾自测试(BITE)¾GCB人工闭合当以下条件满足时,GCU1向GCB1发出闭合指令:1.火警手柄位于正常位22.发电机电门1瞬时置于ON位3.GCU从DEU得到可以加载(RTL)信号或IDG 品质良好超过20秒4.BTB1断开¾RTL信号:–当发动机在慢车以上运转,并且起动手柄在慢车位。
¾GCB自动闭合–火警手柄在正常位–BTB1断开–飞机在空中模式–在转换到空中模式时,APU是飞机的唯一交流电源在转换到空中模式时是飞机的唯交流电源–APB断开¾这些只发生在空中,当回到地面状态时,线路会重新复位¾GCB断开GCU得到欠速信号(发动机停车)–发动机火警手柄在火警位–电源品质超限–发电机电门瞬时置于OFF位得到的断开指令–GCU BPCU人工闭合自动闭合交流发电机保护与励磁发电机励磁IDG有一个恒速装置和一个无刷交流发电机。
有个恒速装置和个无刷交流发电机交流发电机是3相、无刷的发电机。
发电机包括以下部件:–励磁发电机转子(电枢)–主发电机转子(励磁线圈)–永磁发电机(PMG)转子–主发电机(励磁发电机)定子–PMG定子–中线电流互感器(NCT)¾励磁发电:¾GCU监控发电机的电压输出,并调节:¾在以下情况发生时,GCR断开,IDG失去励磁:–发电机电门置于OFF位–发动机火警手柄拔出–任何GCU保护功能发生–发电机驱动脱开(欠频保护)¾当GCR断开时,GCB断开。
¾当发动机在IDG发电时关车,GCR不会断开(RTL信号的参与)。
¾GCU通过断开GCR,保护功能:–过压、欠压过压欠压–过频、欠频–相电流不平衡–发电机二极管失效–相序错误–过流–差动保护–欠速保护¾GCU故障安全模式¾GCU1自动闭合GCRAPU起动发电机¾目的–APU起动发电机有两个功能。
起动发电机有个功能¾位置¾描述发电机有以下部件:–励磁发电机–主发电机–永磁发电机(PMG)PMG提供建压和电压控制所需的电源。
提供建压和电压控制所需的电源32,000英尺以下位90KVA,在41,000英尺的功率为66KVAAPU起动发电机描述–AGCU依靠输入信号来控制APB的状态。
–AGCU和SCU为起动发电机和系统负载提供保护。
–AGCU使用SCU的电压调节器来控制起动发电机的输出。
的电压调节器来控制起动发电机的输出¾AGCU的输入¾GCU输出¾自测试¾APB的闭合¾APB断开APU起动发电机是3相的无刷交流发电机。
¾发电机包括以下部件:¾发电机励磁:–监控发电机的电压和电流。
AGCU监控发电机的电压和电流–SCU监控并控制发电机的输出电压。
机–AGCU中的GCR并不是APU发电机励磁回路上的一部分–AGCU的GCR闭合后向SCU发出VR许可信号。
VR许可信号将闭合SCU 的励磁线路。
¾APU起动发电机起动模式¾AGCU保护:–过压、欠压–过频、欠频–相电流不平衡–相序–过流–差动保护–欠速–AGCU故障安全模式•AGCU断开VR许可信号,从而断开SCU的GCR•AGCU断开APB•在AGCU提供AGCU故障指示¾VR许可条件满足时,AGCU提供VR许可信号:–APU提供RTL信号(APU转速超过95%并且不在冷却停车循环或保护性停车的初始阶段)–起动发电机的频率在范围内–AGCU内的GCR闭合¾发电和启动过程,VR信号作用¾目的SCU有以下两个功能:–调节APU起动发电机的电源输出–在APU起动时起动APU¾位置–SCU位于电子设备舱的E2架。
架¾综述:¾目的¾位置These breakers are in power distribution panel 1 (P91):–Bustie breaker1(BTB1)–Auxiliary power breaker (APB)–Generator control breaker 1 (GCB 1).These breakers are in power distribution panel 2 (P92): Th b k i di ib i l(P92)¾描述:–工作:–辅助触点作用:•Control (open/close) of the breakerC l(/l)f h b k•Position status information for the BPCU•Bus power indication on the P5 panel.¾Purpose¾描述DPCTs and one CT,There are three CT:–IDG 1 (GEN 1 DPCT)–IDG 2 (GEN 2 DPCT)APU generator (APU GEN DPCT)–starter‐–External power (CT).¾位置:位置These DPCTs are in the P91 :•Generator 1 DPCT (GEN 1 DPCT)•APU starter‐generator DPCT (APU GEN DPCT).P92:¾位置¾描述:¾P91:–部件:部件•AC transfer bus 1•* Ground service bus 1•*1DC bus•* Generator control breaker 1 (GCB 1)•* Auxiliary power breaker (APB)•* Bus tie breaker 1 (BTB 1).–警告红灯(面板前、后)警告红灯(面板前后•GEN 1 (on when IDG 1 supplies power)•TIE BUS (on where there is power at the bus tie breakers) APU PWR (on when the starter generator•‐supplies power)•EXT PWR (on when external power supplies power).¾P92:(警告灯有差别–警告灯有差别)交流系统‐断路器控制¾综述–GCU和BPCU一起控制交流电源系统。
–GCU和BPCU根据P5‐4板的选择来控制BTB和GCB。
¾外电源BPCU控制外电源接入:–BPCU通过断路器的辅助触点来监控EPC、GCB和BTB的位置。
的位置–同时,BPCU还监控外电源的品质。
–BPCU在闭合EPC之前确保所有的GCB断开并且外电源的品质良好。
–在EPC闭合后,BPCU通知GCU闭合BTB。
¾APU电源将APU发电机电门1瞬时置于ON位,将导致:–AGCU监控APU起动发电机的电源品质(如果品质良好,以下步骤才会发生)–AGCU通知BPCU已选择APU的电源–BPCU通知GCU1断开GCB1(如果GCB1是闭合的)–如果EPC闭合,则BPCU断开EPC–AGCU指令APB闭合–BPCU指令GCU1闭合BTB1–如果转换汇流条2没有电,则BPCU指令GCU2闭合BTB2没有电则–如果转换汇流条从其它电源得电,则必须瞬时闭合2号APU发电机电门。