【正文】 設(shè)計(jì)，必須考慮使用場所的特性、噪音水平、空間大小高度，并根據(jù)揚(yáng)聲器的擴(kuò)散角度、聲壓等級(jí)和額定輸入功率，確定揚(yáng)聲器的數(shù)量。最多可同時(shí)廣播四種信息。（5）、功率放大器有足夠的功率作全大樓同時(shí)廣播，并且須有備用功放器。（6）、廣播系統(tǒng)應(yīng)具備對(duì)末端揚(yáng)聲器實(shí)現(xiàn)關(guān)鍵語音通道（消防話筒到任意喇叭回路）的檢測功能，喇叭線路的獨(dú)立檢測的功能（通過加載導(dǎo)頻信號(hào)或回路阻抗檢測），可以保證在線路發(fā)生故障時(shí)，在系統(tǒng)主機(jī)上給予報(bào)警指示，同時(shí)給出具體報(bào)警回路編號(hào)及故障類型。 多媒體培訓(xùn)系統(tǒng) 系統(tǒng)概述培訓(xùn)中心位于輔樓一樓，長22m，寬10m，面積約220㎡，培訓(xùn)中心不僅作為正常的教育培訓(xùn)場所，也要考慮大型娛樂活動(dòng)場所。為滿足中小型文藝娛樂功能的要求，配置專業(yè)三基色頂光燈、文藝演出用電腦搖頭燈、頻閃燈、綠激光燈，并配置調(diào)光控制臺(tái)等設(shè)備。顯示系統(tǒng)由投影儀、電動(dòng)幕布等設(shè)備構(gòu)成。另一方面可以根據(jù)實(shí)際情況，播放視頻信號(hào)，給人非常好的視覺效果，從而起到裝飾環(huán)境、烘托氣氛的作用。樓層位置：在主樓二樓會(huì)議室和輔樓一層培訓(xùn)室各設(shè)置雙基色LED屏一塊，用于制作會(huì)標(biāo)、通知等。終端可以顯示各種計(jì)算機(jī)信息，圖形、圖畫及二、三維動(dòng)畫等，具有豐富的播放方式，顯示滾動(dòng)信息、通知、標(biāo)語口號(hào)等。樓宇自控系統(tǒng)對(duì)建筑物內(nèi)的空調(diào)系統(tǒng)設(shè)備，通風(fēng)排風(fēng)設(shè)備，二次交換及供水設(shè)備，生活給排水系統(tǒng)設(shè)備，及所以重要的電力設(shè)備，照明設(shè)備實(shí)行全世界的自動(dòng)監(jiān)測和控制，并同時(shí)收集，記錄，保存及管理有關(guān)系統(tǒng)的重要信息及數(shù)據(jù)，達(dá)到提高運(yùn)行效率，保證特殊生產(chǎn)環(huán)節(jié)需要，節(jié)省能源，節(jié)省人力，最大限度安全延長設(shè)備壽命的目的。系統(tǒng)設(shè)計(jì)采用B/S結(jié)構(gòu)，上位機(jī)可以通過IE瀏覽器訪問WEB服務(wù)器，實(shí)現(xiàn)INTERNET網(wǎng)絡(luò)無縫連接，直接通過IE瀏覽器對(duì)系統(tǒng)進(jìn)行監(jiān)控。2. 設(shè)計(jì)要求（1）、所要求的受控設(shè)備均可以在操作站集中進(jìn)行有效監(jiān)控，操作人員可以一目了然地了解酒店內(nèi)設(shè)備的運(yùn)行情況。（2）、通過各種管理軟件、優(yōu)化控制軟件和節(jié)能軟件達(dá)到自動(dòng)控制，以達(dá)到降低能耗，配合自控系統(tǒng)的節(jié)能式操作，減少不必要的能源浪費(fèi)。（3）、系統(tǒng)設(shè)計(jì)采用二層網(wǎng)絡(luò)結(jié)構(gòu)。自動(dòng)化層：采用先進(jìn)的開放的現(xiàn)場總線技術(shù)，如BACNET、LONWORKS,并且能與附和LONWOEKS、BACNET、MODBUS通訊協(xié)議的設(shè)備進(jìn)行直接連接。TCP/IP協(xié)議；longworks。Modbus(RTU協(xié)議)；OPC協(xié)議等系統(tǒng)開放協(xié)議，或提供其他基于網(wǎng)絡(luò)的應(yīng)用，向上傳輸被集成的詳細(xì)實(shí)時(shí)的設(shè)備數(shù)據(jù)，為上一級(jí)的系統(tǒng)集成建立良好的基礎(chǔ)。該系統(tǒng)將提供開放的數(shù)據(jù)結(jié)構(gòu)，共享信息資源。 機(jī)房及其配套設(shè)備系統(tǒng) 系統(tǒng)概述消防監(jiān)控中心機(jī)房為建筑自動(dòng)化系統(tǒng)設(shè)備、火災(zāi)報(bào)警系統(tǒng)設(shè)備、視頻監(jiān)控和防盜報(bào)警系統(tǒng)設(shè)備、公共廣播系統(tǒng)設(shè)備、門禁一卡通系統(tǒng)設(shè)備、停車管理系統(tǒng)設(shè)備提供中心管理平臺(tái)。 方案設(shè)計(jì)說明及要求 根據(jù)弱電各系統(tǒng)的設(shè)計(jì)，對(duì)機(jī)房內(nèi)的設(shè)備、功能及布置進(jìn)行設(shè)計(jì)，保證所投入的設(shè)備能最有效地發(fā)揮其作用。地面設(shè)計(jì)采用架空式600*600鋼制抗靜電地板，架空高度離地300mm以便強(qiáng)弱電管線橋架的安裝。其余為設(shè)備用供電，通過UPS電源供給設(shè)備使用。動(dòng)力配電包括：機(jī)房舒適型空調(diào)、照明、輔助插座等的設(shè)計(jì)。設(shè)備間配電室的低壓供電箱的供電組包含：低壓自動(dòng)切換系統(tǒng)和UPS輸入配電系統(tǒng)、UPS輸入配電系統(tǒng)和其他輸入配電系統(tǒng)。開關(guān)插座采用進(jìn)口產(chǎn)品。短路保護(hù)等功能以及電壓、電流檢測指示，并具有與火警聯(lián)動(dòng)保護(hù)功能?！彰飨到y(tǒng) 在設(shè)備間設(shè)置日常照明，緊急照明（電力由UPS提供），火災(zāi)疏散照明，并設(shè)置獨(dú)立的配電箱。照明燈具的數(shù)量由弱電施工方提出，照明燈具的提供及安裝由機(jī)房裝修方或強(qiáng)電施工方負(fù)責(zé)實(shí)施?！婚g斷電源系統(tǒng)建議采用的不間斷電源有以下功能：消除由低檔次交流電供給所導(dǎo)致的損壞，如：斷電、欠電壓、電涌，阻尼震蕩、電源干擾、電源干擾波、電源波動(dòng)、瞬時(shí)換相和畸變失真等?！拥乇Ｗo(hù)為確保計(jì)算機(jī)系統(tǒng)正常運(yùn)行，防止干擾，保護(hù)設(shè)備及人身安全，機(jī)房建設(shè)中要有良好的接地系統(tǒng)。直流地單獨(dú)設(shè)置，其電阻小于1歐姆；交流工作地的接地電阻應(yīng)小于4歐姆、安全保護(hù)地的接地電阻應(yīng)小于4歐姆。防雷地和其他地之間的距離應(yīng)大于10米?；顒?dòng)地板支架、隔墻龍骨、吊頂龍骨均應(yīng)進(jìn)行接地處理，以保證靜電泄漏?！览讬C(jī)房動(dòng)力、設(shè)備用電配電柜、主開關(guān)處均設(shè)置浪涌防雷器，防雷器要求達(dá)到B級(jí)和C級(jí)技術(shù)要求。Lesson 1 A private conversation d not enjoy it.??A young man and a young woman were sitting behind me. They were talking loudly. I got very angry. I could not hear the actors. I turned round. I looked at the man and the woman angrily. They did not pay any attention. In the end, I could not bear it. I turned round again. 39。t hear a word!39。 It39。 the young man said rudely. 39。.Lesson 2 Breakfast or lunch?h Sunday I got up very late. I looked out of the window. It was dark outside. 39。 I thought. 39。s raining again.39。 I39。 she said. 39。m ing to see you.39。But I39。 I said.39。 she asked. 39。m having breakfast,39。Dear me,39。Do you always get up so late ? It39。clock!Lesson 3 Please send me a card eums and sat in public gardens. A friendly waiter taught me a few words of??Italian. 39。The Nicest Garden Competition39。s garden is larger than Joe39。s garden is more interesting. He has made neat paths and has built a wooden bridge over a pool. I like gardens too, but I do not like hard work. Every year I enter for the garden petition too, and I always win a little prize for the worst garden in the town!Lesson 9 A cold weleOn Wednesday evening, we went to the Town Hall. It was the last day of began to laugh and sing.Lesson 10 Not for jazzWe have an old musical instrument. It is called a clavichord(翼琴). It was made in Germany in 1681. Our clavichord is kept in the livingroom. It has belong to our family for a long time. The instrument was bought by my grandfather many years ago. Recently it was damaged by a visitor. She tried to play jazz on it! She struck the keys too hard and two of the strings were broken. My father was shocked. Now we are not allowed to touch it. It is being repaired by a friend of my father39。 Club. The Greenwood Boys will be staying for five days. During this time, they will give five performances. As usual, the police will have a difficult time. They will be trying to keep order. It is always the same on these occasions.Lesson 14 Do you speak EnglishI had an amusing experience last year.??After I had left a small village in the south of France, I drove on to the next town. On the way, a young man waved to me. I stopped and he asked me for a lift. As soon as he had got into the car, I said good morning to him Lesson 17 Always young at least thirtyfive years old. In spite of this, she often appears on the stage as a young girl. Jennifer will have to take part in a new play soon. This time, she will be a girl of seventeen. In the play, she must appear in a bright red dress and long black stockings. Last year in another play, she had to wear short socks and a bright, orangecoloured dress. If anyone ever asked her how old she is, she always answers, 39。lesson18 He often does this! had left it on a chair beside the door and now it wasn39。Did you have a good meal ?39。Yes, thank you,39。but I can39。t got my bag.39。I39。 he said 39。Lesson19 Sold out 39。 Susan answered.39。May I have two tickets please ?39。I39。ve sold out,39。What a pity!39。Can I return these two tickets?39。Certainly,39。You must give up fishing!39。 It39。 But they don39。m not really interested in fishing. I am only one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.Lesson22 A glass envelopeng a letter from a girl of her own age in Holland. Last year, we were travelling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. She threw the bottle into the sea. She never thought of it again, but ten months later, she received a letter from a girl in Holland. Both girls write to each other regularly now. However, they have decided to use the postoffice. Letters will cost a litt1e more, but they will certainly travel faster. Lesson23 A new houserday. She lives in Nigeria. In her letter, she said that she would e to Lesson24 It could be worse . I had just lost amp。 I left the money in my room,39。and it39。 The manager was sympathetic, but he could do nothing. 39。s losing money these days