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1、prisoner knocked him to the ground with a sharp blow. Then, jumping into the car, he drove off as quickly as he could. Lesson82 Monster or fish? 是妖还是鱼？Fishermen and sailors sometimes claim to have seen monsters in the sea. Though people have often laughed at stories told by seamen, it is now known t
2、hat many of these monsters which have at times been sighted are simply strange fish. Occasionally, unusual creatures are washed to the shore, but they are rarely caught out at sea. Some time ago, however, a peculiar fish was caught near Madagascar. A small fishing-boat was carried miles out to sea b
3、y the powerful fish as it pulled on the line. Realizing that this was no ordinary fish, the fisherman made every effort not to damage it in any way. When it was eventually brought to shore, it was found to be over thirteen feet long. It had a head like a horse, big blue eyes, shining silver skin, an
4、d a bright red tail, The fish, which has since been sent to a museum where it is being examined by a scientist, is called an oarfish. Such creatures have rarely been seen alive by man as they live at a depth of six hundred feet.Lesson83 After the elections 大选之后The former Prime Minister, Mr Wentworth
5、 Lane, was defeated in the recent elections. He is now retiring from political life and has gone abroad. My friend, Crawley, has always been a fanatical opponent of Mr Lanes Radical Progressive Party. After the elections, Crawley went to the former Prime Ministers house. When he asked if Mr Lane liv
6、ed there, the policeman on duty told him that since his defeat, the ex-Prime Minister had gone abroad. On the following day, Crawley went to the house again. The same policeman was just walking slowly past the entrance, when Crawley asked the same question. Though a little suspicious this time, the
7、policeman gave him the same answer. The day after, Crawley went to the house once more and asked exactly the same question. This time, the policeman lost his temper. I told you yesterday and the day before yesterday, he shouted, Mr Lane was defeated in the elections. He has retired from political li
8、fe and gone to live abroad ! I know, answered Crawley, but I love to hear you say it ! Lesson84 On strike 罢工Busmen have decided to go on strike next week. The strike is due to begin on Tuesday. No one knows how long it will last. The busmen have stated that the strike will continue until general agr
9、eement is reached about pay and working conditions. Most people believe that the strike will last for at least a week. Many owners of private cars are going to offer free rides to people on their way to work. This will relieve pressure on the trains to some extent. Meanwhile, a number of university
10、students have volunteered to drive buses while the strike lasts. All the young men are expert drivers, but before they drive any of the buses, they will have to pass a special test. The students are going to take the test in two days time. Even so, people are going to find it difficult to get to wor
11、k. But so far, the public has expressed its gratitude to the students in letters to the Press. Only one or two people have objected that the students will drive too fast!Lesson85 Never too old to learn 活到老学到老I have just received a letter from my old school informing me that my former head- master, M
12、r Regmald Page, will be retiring next week. Pupils of the school, old and new, will be sending him a present to mark the occasion. All those who have contributed towards the gift will sign their names in a large album which will be sent to the headmasters home. We shall all remember Mr Page for his
13、patience and understanding and for the kindly encouragement he gave us when we went so unwillingly to school. A great many former pupils will be attending a farewell dinner in his honour next Thursday. It is a curious coincidence that the day before his retirement, Mr Page will have been teaching fo
14、r a total of forty years. After he has retired, he will devote himself to gardening. For him, this will be an entirely new hobby. But this does not matter, for, as he has often remarked, one is never too old to learn. Lesson86 Out of control 失控As the man tried to swing the speed-boat round, the stee
15、ring-wheel came away in his hands. He waved desperately to his companion, who had been water-skiing for the last fifteen minutes. Both men had hardly had time to realize what was happening when they were thrown violent1y into the sea. The speed-boat had struck a buoy, but it continued to move very q
16、uickly across the water. Both men had just begun to swim towards the shore. when they noticed with dismay that the speed-boat was moving in a circle. It now came straight towards them at tremendous speed. In less than a minute, it roared past them only a few feet away. After it had passed, they swam
17、 on as quickly as they could because they knew that the boat would soon return. They had just had enough time to swim out of danger when the boat again completed a circle. On this occasion, however, it had slowed down considerably. The petrol had nearly all been used up. Before long, the noise dropp
18、ed completely and the boat began to drift gently across the water.Lesson87 A perfect alibi 极好的不在犯罪现场的证据At the time the murder was committed, I was travelling on the 8.0 oclock train to London, said the man.Do you always catch such an early train ? asked the inspector.Of course I do, answered the man
19、. I must be at work at 10.0 oclock. My employer will confirm that I was there on time. Would a later train get you to work on time ? asked the inspector. I suppose it would, but I never catch a later train.At what time did you arrive at the station ?At ten to eight. I bought a paper and waited for t
20、he train.And you didnt notice anything unusual ? Of course not.I suggest, said the inspector, that you are not telling the truth. I suggest that you did not catch the 8.0 oclock train, but that you caught the 8.25 which would still get you to work on time. You see, on the morning of the murder, the
21、8.0 oclock train did not run at all. It broke down at Ferngreen station and was taken off the line.Lesson88 Trapped in a mine 困在矿井里Six men have been trapped in a mine for seventeen hours. If they are not brought to the surface soon they may lose their lives. However, rescue operations are proving di
22、fficult. If explosives are used, vibrations will cause the roof of the mine to collapse. Rescue workers are therefore drilling a hole on the north side of the mine. They intend to bring the men up in a special capsule. If there had not been a hard layer of rock beneath the soil, they would have comp
23、leted the job in a few hours. As it is, they have been drilling for sixteen hours and they still have a long way to go. Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with the closest relatives. Though they are running out of food and dri
24、nk, the men are cheerful and confident that they will get out soon. They have been told that rescue operations are progressing smoothly. If they knew how difficult it was to drill through the hard rock, they would lose heart. Lesson89 A slip of the tongue 口误People will do anything to see a free show
25、-even if it is a bad one. When the news got round that a variety show would be presented at our local cinema by the P. and U. Bird Seed Company, we all rushed to see it. We had to queue for hours to get in and there must have been several hundred people present just be- fore the show began. Unfortun
26、ately, the show was one of the dullest we have ever seen. Those who failed to get in need not have felt disappointed as many of the artistes who should have appeared did not come. The only funny things we heard that evening came from the advertiser at the beginning of the programme. He was obviously
27、 very nervous and for some minutes stood awkwardly before the microphone. As soon as he opened his mouth, everyone burst out laughing. We all know what the poor man should have said, but what he actually said was: This is the Poo and Ee Seed Bird Company. Good ladies, evening and gentlemen !lesson90
28、 Whats for supper ？ 晚餐吃什么？Though Brazil is one of the richest countries in the world, much of it has not yet been developed. It was mainly for this reason that the Brazilian government decided to have a new city built 600 miles north-west of Rio de Janeiro. Designed by the great architect Lucio Cost
29、a, the new city, Brasilia, replaced Rio de Janeiro as the capital of Brazif in 1960. Brasilia has been carefully planned for modern living. Its wide roads, which can take fourteen lanes of traffic, have been keptaway from living areas. Children do not have to cross busy streets to go to school. Hous
30、ewives can visit-shopping centres on foot, for in these specially designed living areas, cars are unnecessary. At first, the government had great difficulty in persuading people to leave Rio and to settle in Brasilia. Since 1960, however, the population has been growing all the time. Brasilia has qu
31、ickly established itself as the capital of the country. The idea to have the capital moved so far inland will have a great effect on the future of Brazil.Lesson91 Three men in a basket 三人同篮A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby. He informed the stati
32、on at once, but no one there was able to explain the mystery. The officer in the control tower was very angry when he heard the news, because balloons can be a great danger to aircraft. He said that someone might by spying on the station and the pilot was ordered to keep track of the strange object.
33、 The pilot managed to circle the balloon for some time. He could make out three men in a basket under it and one of them was holding field-glasses. When the balloon was over the station, the pilot saw one of the men taking photographs. Soon afterwards, the balloon began to descend and it landed near
34、 an airfield. The police were called in, but they could not arrest anyone, for the basket contained two Members of Parliament and the Commanding Officer of the station! As the Commanding Officer explained later, one half of the station did not know what the other half was doing ! Lesson92 Asking for
35、 trouble 自找麻烦It must have been about two in the morning when I returned home. I tried to wake up my wife by ringing the door-bell, but she was fast asleep, so I got a ladder from the shed in the garden, put it against the wall, and began climbing towards the bedroom window. I was almost there when a
36、 sarcastic voice below said, I dont think the windows need cleaning at this time of the night.I looked down and nearly fell off the ladder when I saw a policeman. I immediately regretted answering in the way I did, but I said, I enjoy cleaning windows at night.So do I, answered the policeman in the
37、same tone. Excuse my interrupting you. I hate to interrupt a man when hes busy working, but would you mind coming with me to the station ? Well, Id prefer to stay here, I said. You see, Ive forgotten my key.Your what ? he called.My key, I shouted. Fortunately, the shouting woke up my wife who opened
38、 the window just as the policeman had started to climb towards me.Lesson93 A noble gift 崇高的礼物One of the most famous monuments in the world, the Statue of Liberty, was presented to the United States of America in the nineteenth century by the people of France. The great statue, which was designed by
39、the sculptor Auguste Bartholdi, took ten years to complete. The actual figure was made of copper supported by a metal framework which had been especially constructed by Eiffel. Before it could be transported to the United States, a site had to be found for it and a pedestal had to be built. The site
40、 chosen was an island at the entrance of New York Harbour. By 1884, a statue which was 151 feet tall, had been erected in Paris. The following year, it was taken to pieces and sent to America. By the end of October 1886, the statue had been put together again and it was officially presented to the A
41、merican people by Bartholdi. Ever since then, the great monument has been a symbol of liberty for the millions of people who have passed through New York Harbour to make their homes in America.Lesson94 Future champions 未来的冠军Experiments have proved that children can be instructed in swimming at a ver
42、y early age. At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk. Babies of two months old do not appear to be reluctant to目 录1 概述31.1 建设背景31.1.1 必要性与迫切性31.1.2 建设依据41.1.3 建设意义61.2 现状与需求分析61.2.1 报警与监控系统现状61.2.2 网络与通信设施现状71.2.
43、3 需要解决的问题81.2.4 需求分析82 系统建设目标、原则、内容92.1 建设目标92.2 建设原则92.3 建设步骤102.4 建设内容103 系统总体架构设计113.1 系统结构113.1.1 组织结构113.1.2 系统职能结构113.1.3 系统组网结构123.1.4 公安专网与公共网络的连接133.2 系统平台构建133.2.1 系统平台规划133.2.2 系统接入层143.2.3 系统核心层164 系统设计174.1 系统设计原则174.2 系统组成结构184.2.1 系统组成184.2.2 市级监控中心204.2.3 分（县）局级监控中心214.2.4 派出所监控分中心（新
44、建）224.2.5 已建监控系统的派出所监控分中心234.2.6 专业服务公司监控中心234.2.7 重点防范单位和小区监控室244.3 系统软件设计254.3.1 系统视频流分析254.3.2 视频的分布式共享策略254.3.3 系统软件组成285 系统性能特点及主要技术指标345.1 系统性能特点345.2 系统主要技术指标365.3 系统主要设备技术指标361 概述1.1 建设背景1.1.1 必要性与迫切性改革开放以来，我国社会发生了翻天覆地的变化，在经济得到了迅速发展、人民生活水平得到了迅速提高的同时，社会治安形势也发生了深刻的变化，对社会治安综合治理工作提出了更高的要求。警方需要走科
45、技强警之路，向科技要警力；安全防范工作也开始充分运用现代科技手段，向科技要平安。科技创安的目的就是要增强人民群众的安全感，提高老百姓的生活质量，构建安宁、和谐的社会环境。要想有效的遏止住刑事犯罪案件上升趋势，维护社会治安、保障社会安定，就需要大力投入科技力量。城市报警与监控技术系统是社会治安防控体系建设的重要组成部分，也是贯彻打防结合、预防为主方针的技术手段。城市报警与监控系统的建设已经开展多年，为了更进一步地增强和提高这些技术手段的有效性，公安部科技局于2005年8月下发了关于开展城市报警与监控技术系统建设工作的意见。文件中对系统建设的指导思想、基本原则、主要内容、工作要求以及构成措施等都提
46、出了明确的要求，加强要以规范技术应用为重点，以增强技术设施的实际应用效能为核心，通过系统集成，机制创新。在建设过程中坚持以人为本，探索创新、大胆实践，统筹规划、分步设施等原则，促进安防技术与公安业务工作的紧密结合，为保障人民安居乐业，创建和谐社会做贡献。从2005年10月开始到2008年，公安部将在全国开展城市报警与监控系统建设“3111”试点工程（即在省、市、县三级开展报警与监控系统建设试点工程，每个省确定一个市，有条件的地方确定一个县，有条件的县确定一个社区或街区为报警与监控体统建设的试点市、县、社区或街区），提出了全面加快推进城市报警与监控系统建设试点工作的要求，并且进行了全面细致的工作
47、布置。会上还强调了“三到要求”：要把报警与监控系统建设工作提升到当地经济社会发展的大局上认识；要把报警与监控系统建设工作纳入到当地党委政府的议事日程上研究；要把报警与监控系统建设工作延伸到科技创安的层面上布署。公安部于2005年9月在北京、苏州、杭州、济南4个城市公安机关先期试点的基础上，决定在全国范围内确定22个城市公安局作为试点单位，这些城市将针对平安城市建设的需要，全面开展报警与监控的网络化建设，并建立系统运行保障机制和警务处置流程。目前全国已有近100个城市公安机关开展了以报警与监控资源整合为内容的系统建设工作，初步形成了面向经济社会发展、服务公安工作、符合地方实际的试点工作格局。近年
48、来，在各级政府和公安机关的努力下，城市报警与监控系统建设在技术水平和实际应用等方面都取得了长足进步。但是，由于缺乏统一组织和协调，各个技术系统建设自成体系，系统缺乏互连互通能力，不利于实现各种信息资源的共享，制约了技术防范在城市社会治安管理中作用的充分发挥，也与报警服务社会化、专业化的要求不相适应。为适应公安部城市报警与监控系统建设技术指南要求，迫切需要在全省范围内，综合应用各种报警和监控资源，构建城市报警与监控系统的整体平台，制定统一的接口和规范，逐步实现各级报警监控系统的互联，构筑一个指挥高效、反应灵敏、处置快捷、防范有效、控制有力、保障可靠的治安防控体系。1.1.2 建设依据本系统的建设主要依据公安部城市报警与监控系统建设技术指南。同时参照以下国家和有关行业标准：安全防范工程程序与要求GB/50348-2002计算机软件需求说明编制指南GB/T93855-1988计算机软件质量保证计划规范GB/T12504-1990公安计算机信息系统“九五”规划中华人民共和国公共安全行业标准GA/T75-94质量计划的编写与管理程序工业电视系统工程设计规范GBJ115-87公安指挥大厅技术系统总体技术条件ZS-725 9003电气设备安装工程施工及验收规范计算机信息系统 安全保密等级划分准则GB17859