【正文】 ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。 Have declared the end of the encounter that haven39。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強心劑，或者說，是自以為是的精神寄托罷了。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個人的時候，自己的想法總是特別地清晰。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲。s 21 win. Michel Platini, president of European football39。s antiracism taskforce, is in London for the Football Association39。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 (4)如果煙霧和溫度同時出現(xiàn)異常，則說明 有火災，發(fā)出火災警報，并及時將火災信息上報消防指揮中心。在設計中應仔細研究這些情況，根據(jù)不同的情況選擇不同的火災自動報警系統(tǒng)：保護對象規(guī)模不大，重要程度不高，可選用區(qū)域報警系統(tǒng)，當區(qū)域報警控制器垂直方向警戒各樓層探測區(qū)域時，應在每個樓層的各樓梯口明顯部位裝設識別樓層的燈光顯示裝置，以便發(fā)生火警時（特別是夜間火災），能及 時找到火警區(qū)域，并迅速采取相應措施；保護對象規(guī)模大，重要程度高，人員集中，聯(lián)動設備也多，可采用集中報警系統(tǒng)或控制中心報警系統(tǒng)。 參考文獻 ： [1] 孫育才， MCS51 系列單片微型計算機及其應用，第 4 版，東南大學出版社， 2020 [2] 王慶， Protel 99 SEamp。為防止誤報，在程序設計上，對煙霧濃度進行快速重復檢測和延時報警，以區(qū)別出是管道中煙霧的泄漏，還是由于暫短打開閥門產(chǎn)生的可燃煙霧的微量散失，防止誤報 [9]。 STC12C5410AD 單片機對傳感器檢測的煙霧濃度信號進行 A/D 轉 換、平均值法濾波、線性化處理后，將濃度值與報警限設定值相比較，判斷是否報警。 主程序設計及流程圖 主程序流程圖如圖 7 所示。紅燈閃亮表示環(huán)境中可 燃煙霧濃度超過報警限值，提醒用戶盡快作相應安全措施。 狀態(tài)指示燈及控制鍵電路 狀態(tài)指示燈及控制鍵電路圖如圖 圖 6 所示。報警裝置采用無源壓電式 KM3712x 型蜂鳴器，較一般的蜂鳴器體積大，聲音響亮。由于系統(tǒng)采用的是單極性供電，所以采用同相比例放大電路，可以減少硬件開銷。它一方面要接收來自傳感器送來的煙霧濃度對應的模擬信號和故障檢測信號，另一方面要對兩種信號分別進行處理，控制后續(xù)電路進行相應動作；與此同時查詢是否有鍵按下的請求 [7]。為了保證其可靠性，在輸出 5V 的電壓的同時，進行故障監(jiān)測。 第 三 章、 煙霧檢測 報警器 整體 設計 硬件組成 本論文中的煙霧檢測報警器以 STC12C5410AD 單片機為控制核心，采用 MQ2型電阻式半導體傳感器采集煙霧信息。 （二）、設計 系統(tǒng)的 總體架構 火災自動報警與消防聯(lián)動控制系統(tǒng)是建筑物防火綜合監(jiān)控系統(tǒng)，由火災報警系統(tǒng)和消防聯(lián)動控制系統(tǒng)組成。當發(fā)生火災時，溫升速率急劇