【正文】
s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds.Even if everything goes as planned, it won39。Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence.The supersonic descent could happen as early as Sunda.The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻,天空是陰暗的,空氣里有著剛下過雨之后的清新因子。 From the corner at the beginning of deep friendship。At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt。嫌惡過自己的怯懦,最終卻發(fā)現(xiàn)有很多緣分,有很多錯過,好像冥冥之中真的已經(jīng)注定。想要的,不想要的,界限明確,好像沒有什么可以撼動自己。A person39。t remember his appearance. 童年時,覺得壓歲錢和新衣服是過年必備,但是隨著年齡的推進,會越來越發(fā)現(xiàn),那些東西根本就可有可無;初中時,以為要有一場暗戀才意味著真正的成長,但三年過去后,自己心平氣和的寫同學(xué)錄的時候,突然就發(fā)現(xiàn)是不是真正的成長了,好像并沒有那么重要了;然后到了高中,覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個句點,但畢業(yè)晚會的時候最終還是被梗塞在了咽喉,后來再次站在他曾經(jīng)揮汗如雨的球場,看著他投過籃球的球框時,突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。 Then in high school, think don39。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。二十年的人生軌跡深深淺淺,突然就感覺到有些事情,非做不可了?;蛟S是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個不同的日子過成了同一天的樣子;或許是追溯過去,對自己那些近乎偏執(zhí)的怪異信念的醒悟,這些天以來,思緒一直很凌亂,在腦海中不斷糾纏。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA.Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。s governing body, has also ordered an immediate investigation into the referee39。City39。opened disciplinary proceedings against CSKAs 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。nearest CAB.For more information about making a claim to an employment tribunal, seere clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. if you win the case.If you are thinking about signing up for damagesbased agreement. In England and Wales, your solicitor can39。Further help.Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation.Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed underappealedDismissal.You can make a claim to an employment tribunal, even if you haven39。t agree with the disciplinary action your employer has taken against you5.參考資料 [1] 蔡濟寧《低沸點烷烴參數(shù)》 [2] ,2009: 11~12. [3] :化學(xué)工業(yè)出版社,2002. [4] 劉光啟,:化學(xué)工業(yè)出版社,2002. [5] 申迎華,:化學(xué)工業(yè)出版社,2011. [6] :高等教育出版社,2010. [7] :化學(xué)工業(yè)出版社,2012. [8] 周軍,:化學(xué)工業(yè)出版社,2011. [9] :化學(xué)工業(yè)出版社,2005. 附圖1附圖2附圖3g an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:由于個人知識水平有限,在老師和同學(xué)的耐心幫助下才得以完成本次設(shè)計??偠灾O(shè)計過程中培養(yǎng)了我的自學(xué)能力,增加了我們解決問題的信心。(3)是畫圖。計算是個很磨練人耐心的事情,稍一不小心就會算錯,而且有可能當(dāng)時還不知道,到頭來發(fā)現(xiàn)不對就得改好多東西,所以說這確實要有耐心。比如查找的常數(shù),就找到了兩組不同的數(shù)據(jù),只能自己將數(shù)據(jù)代入計算看哪一個合理,所以很是麻煩。但是,在設(shè)計中我們也遇到了許多困難:(1)是查找資料。 設(shè)計也教會了我耐心,很多地方都是需要先假設(shè)數(shù)據(jù),再驗算,不符合時再調(diào)整數(shù)據(jù)重新進行驗算。因為我已經(jīng)有了一定的自主研究的能力,我能通過自學(xué)慢慢的將問題化解。(3)設(shè)計中我學(xué)會了自主學(xué)習(xí),參看多本指導(dǎo)書,理論聯(lián)系實際,解決問題。這需要我們查閱大量資料和網(wǎng)上資源,設(shè)計教會了我查閱電子資源的能力,如在中國知網(wǎng)上查到的正戊烷與正己烷的氣液平衡數(shù)據(jù)。如果在計算過程中,不加思考,只為了計算而計算,那樣只會徒勞無益,浪費時間,總之,在本次設(shè)計中,讓我對化工原理和物理化學(xué)等課程有了更系統(tǒng)、更深刻的認(rèn)識。在平常學(xué)習(xí)中,我們只關(guān)注局部,而沒有整體把握。(1)課程設(shè)計是對以往學(xué)過的知識加以檢驗,能夠培養(yǎng)理論聯(lián)系實際的能力,尤其是這次精餾塔設(shè)計更加深入了對化工生產(chǎn)過程的理解和認(rèn)識,使我們所學(xué)的知識不局限于書本,并鍛煉了我們的邏輯思維能力,同時也讓我深深地感受到工程設(shè)計的復(fù)雜性以及我了解的知識的狹隘性。4. 設(shè)計總結(jié)整整兩周的化工原理課程設(shè)計終于告一段落,過程雖然比較辛苦,但對我自己而言兩周的辛勤勞動是收獲頗豐的。在設(shè)置人孔處,板間距為800mm,裙座上應(yīng)開個人孔,直徑為,厚,高52mm。本塔中共16板,因此,在進料板和提鎦段各設(shè)置一個人孔。故該筒體的厚度的設(shè)計厚度為+C2=3+1=4mm(取碳素鋼腐蝕裕量C2=1mm) 筒體的名義厚度為液壓試驗校核時應(yīng)滿足、當(dāng)4mm時,MPa Mpa== MPa因此該筒體厚度(材質(zhì)碳素鋼鋼板Q235A)設(shè)計合理。 塔底工作壓力(表壓)p==,取設(shè)計壓力Pc== MPa焊接接頭形式采用雙面對接接頭局部無損探傷,在t150℃時=113 Mpa =1600mm 將上述數(shù)據(jù)代入圓筒厚度計算公式得=+C1=+=(取碳素鋼鋼板負(fù)偏差C2=)在設(shè)計較低壓力容器中規(guī)定殼體加工成型后不包括腐蝕裕量的最小厚度為:碳素鋼和低合金鋼制容器不小于3mm,高合金鋼制容器不小于2mm。故選取IS 8050250型離心泵,在n=1450r/min轉(zhuǎn)速下,泵的有關(guān)性能參數(shù)為: q=25m3/h H=20m P= Kw = 由鋼板(材質(zhì)碳素鋼鋼板)卷制而成的筒體,其公稱直徑的值等于內(nèi)徑。(根據(jù)本設(shè)計參數(shù)和經(jīng)驗,選擇)根據(jù)前面的數(shù)據(jù)對上式各項進行估算=++==取絕對粗糙度為:; 則相對粗糙度為:查《化工原理》上冊[6](管流摩擦系數(shù)λ與雷諾數(shù)及相對粗糙度的關(guān)系圖)得摩擦系數(shù)λ= =λ==30= 將各項代入上式中,計算泵的揚程H=由進料管計算過程可知進料流量進料管實際流速:進料管規(guī)格Φ68 ,則管內(nèi)徑d=63mm查《化工原理》[6](上)附錄十七,由輸送流體的性質(zhì),