【正文】 t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there 天津工程師范學(xué)院 2022 屆畢業(yè)設(shè)計（論文） 24 。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。突然想到那件藍(lán)格子襯衫；那些被折成各種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場還沒有開始就宣告了終結(jié)的邂逅計劃 …… 那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。 Have declared the end of the encounter that haven39。 Those were broken into various shapes of stationery。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。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時候是最后又打起了退堂鼓。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。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來，這個世界上，對某個事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅決，還有，時間。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。t really grow up, it seems is not so important。 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？ 天津工程師范學(xué)院 2022 屆畢業(yè)設(shè)計（論文） 22 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?？傆X得自己自己似乎應(yīng)該去做點什么，或者寫點什么。 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 actions. CSKA said they were surprised and disappointed by Toure39。s 21 win. Michel Platini, president of European football39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport. For me it39。s antiracism taskforce, is in London for the Football Association39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。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。 通過網(wǎng)絡(luò)，能夠傳送和接收模擬或數(shù)字?jǐn)?shù)據(jù)的任何功能單元都叫數(shù)據(jù)電路終接設(shè)備（ DCE）。兩個 DTE 設(shè)備不需要互相協(xié)調(diào)，但是每個 DTE 設(shè)備必須與它連接的 DCE 設(shè)備協(xié)調(diào)工作。為實現(xiàn)這一通信，發(fā)送和接收的 DCE設(shè)備必須采用一樣的編碼技術(shù)（例如，頻移鍵控（ FSK）編碼）。在任何一個網(wǎng)絡(luò)中，一個 DTE設(shè)備產(chǎn)生數(shù)字?jǐn)?shù)據(jù)并將它傳送到 DCE設(shè)備， DCE設(shè)備將這些數(shù)據(jù)轉(zhuǎn)化可以在傳輸媒體上傳送的格式并將轉(zhuǎn)化后的信號發(fā)送給網(wǎng)絡(luò)上另一個 DCE設(shè)備。在物理層，一個數(shù)據(jù)電路終接設(shè)備（ DCE）接收從數(shù)據(jù)終端設(shè)備（ DTE）中產(chǎn)生的數(shù)據(jù)，將她們轉(zhuǎn)換為相應(yīng)信號，然后將這些信號發(fā)送到傳輸鏈路上。 一個數(shù)據(jù)終端設(shè)備（ DTE）就是可作為二進(jìn)制數(shù)字?jǐn)?shù)據(jù)來源和終點的任何設(shè)備。你的聲帶和嘴是 DCE，你朋友的耳朵也是 DCE。在對方的大腦中，聲波信號被還原成信息。由幸或者說不幸的是，我們都不是頭腦閱讀者?？梢园?DTE的工作方式想象成當(dāng)你說話時大腦的工作。天津工程師范學(xué)院 2022 屆畢業(yè)設(shè)計（論文） 20 在物理層，這可以是一臺終端、一臺小型計算機、計算機、打印機、傳真機或是任何產(chǎn)生和處理數(shù)據(jù)的設(shè)備。當(dāng)信號到達(dá)另一端時，相反的過程將發(fā)生。在數(shù)據(jù)通信中經(jīng)常涉及到四個基本功能單元：兩端各有一個DTE和一個 DCE。字節(jié)同步在數(shù)據(jù)鏈路層實現(xiàn)。 同步傳輸?shù)膬?yōu)點是速度快。 因為沒有間隙和起始 /停止位，就沒有勒比特流內(nèi)部的同步機制可以幫助接收端設(shè)備在處理比特流時調(diào)整比特同步。也就是說，數(shù)據(jù)被當(dāng)作不簡短的 0、 1 比特流傳輸，而接收方來將比特流分割成重建信息所需的一個個字節(jié)。 (2) 同步傳輸 在同 步傳輸中，比特流被組裝成更長的“幀”，一幀包含有許多個字節(jié)。例如，一臺終端到計算機的連接很自然就是一種異步傳輸?shù)膽?yīng)用實例。 相對于不需要控制信息的傳輸方式，異步傳輸由于加入了起始位、停止位以及比特流間插入了間隙而顯得慢一些。當(dāng)檢測到停止位到達(dá)時，接受方在下一個起始位到達(dá)前忽略接收的所有信號。當(dāng)接收方檢測到一個起始位后，就啟動一個時鐘，并隨著到來的比特開始記數(shù)。也就是說，一定程度上的同步還是存在的，但僅僅局限在一 個字節(jié)的時間內(nèi)。因為在字節(jié)這一級別，發(fā)送方和接收方不需要進(jìn)行同步，所以這種傳輸方式稱為異步傳輸。在字節(jié)之間可以插入間隙。這段間隙或者通過信道控閑狀態(tài)代表，或者通過附加的停止比特流代表。利用以上的方法，每字節(jié)的大小至少增加到了 10 個比特，其中有 8 比特的信息在加上 2 個或更多的提示接收方的信號。為了讓接收方知道一個字節(jié)已經(jīng)結(jié)束，在每字節(jié)尾部還要加上一個或多個比特。因而，為了通知接收方有新的比特組到達(dá)，在每字節(jié)的開頭都要附加一個比特。發(fā)送端系統(tǒng)單獨處理每個組，每處理完一個組就將其轉(zhuǎn)發(fā)到鏈路上，并不理會時鐘信號。約定模式是基于將比特組成字節(jié)。它與同步方式不同的事，信息是以一種約定的模式來被接收和翻譯的。 串行傳輸以兩種方式進(jìn)行：同步方式和異步方式。 串行傳輸相對于并行傳輸 的優(yōu)點是：因為只需要一條通信信道，串行傳