【正文】 t carry it very far very easily, which was why he was writing in the rumpus room instead of somewhere else. The oil burner had quit. A mouse had eaten through the insulation of a wire leading to the th。 And so on. Billy was working on this letter in the basement rumpus room of his empty house. It was his housekeeper39。The most important thing I learned on Tralfamadore was that when a person dies he only appears to die. He is still very much alive in the past, so it is very silly for people to cry at his funeral. All moments, past, present and future, always have existed, always will exist. The Tralfamadorians can look at all the different moments just that way we can look at a stretch of the Rocky Mountains, for instance. They can see how permanent all the moments are, and they can look at any moment that interests them. It is just an illusion we have here on Earth that one moment follows another one, like beads on a string, and that once a moment is gone it is gone forever. 39。t been missed, he said, because the Tralfamadorians had taken him through a time warp, so that he could be on Tralfamadore for years, and still be away from Earth for only a microsecond. Another month went by without incident, and then Billy wrote a letter to the Ilium News Leader, which the paper published. It described the creatures from Tralfamadore. The letter said that they were two feet high, and green., and shaped like plumber39。s daughter Barbara. Barbara was upset. She an d her husband went down to New York and brought Billy home. Billy insisted mildly that everything he had said on the radio was true. He said he had been kidnapped by the Tralfamadorians on the night of his daughter39。s son Robert had a lot of trouble in high school, but then he joined the famous Green Berets. He straightened out, became a fine Young man, and he fought in Vietnam. Early in 1968, a group of optometrists, with Billy among them, chartered an airplane to fly them from Ilium to an internation al convention of optometrists in Montreal. The plane crashed on top of Sugarbush Mountain, in Vermont. Everybody was killed but Billy. So it goes. While Billy was recuperating in a hospital in Vermont, his wife died accidentally of carbonmonoxide poisoning. So it goes. When Billy finally got home to Ilium after the airplane crash, he was quiet for a while. He had a terrible scar across the top Of his skull. He didn39。 they were now driven to seek the means of subsistence elsewhere, and they waited sadly to bid farewell to the engineer. James Starr stood upright, at the door of the vast shed in which he had for so many years superintended the powerful machines of the shaft. Simon Ford, the foreman of the Dochart pit, then fiftyfive years of age, and other managers and overseers, surrounded him. James Starr took off his hat. The miners, cap in hand, kept a profound silence. This farewell scene was of a touching character, not wanting in grandeur. My friends, said the engineer, the time has e for us to separate. The Aberfoyle mines, which for so many years have united us in a mon work, are now exhausted. All our researches have not led to the discovery of a new vein, and the last block of coal has just been extracted from the Dochart pit. And in confirmation of his words, James Starr pointed to a lump of coal which had been kept at the bottom of a basket. This piece of coal, my friends, resumed James Starr, is like the last drop of blood which has flowed through the veins of the mine! We shall keep it, as the first fragment of coal is kept, which was extracted a hundred and fifty years ago from the bearings of Aberfoyle. Between these two pieces, how many generations of workmen have succeeded each other in our pits! Now, it is over! The last words which your engineer will address to you are a farewell. You have lived in this mine, which your hands have emptied. The work has been hard, but not without profit for you. Our great family mustrent pits came forward to shake hands with him, whilst the miners waved their caps, shouting, Farewell, James Starr, our master and our friend! This farewell would leave a lasting remembrance in all these honest hearts. Slowly and sadly the population quitted the yard. The black soil of the roads leading to the Dochart pit resounded for the last time to the tread of miners39。c., were not likely to fail for want of the mineral fuel。 hospital near Lake Placid, and was given shock treatments and released. He married his fian c 閑 , finished his education, and was set up in business in Ilium by his fatherinlaw. Ilium is a particularly good city for optometrists because the General Fe and Foundry Company is there. Every employee is required to own a pair of safety glasses, and to wear them in areas where manufacturing is going on. GFamp。 除非另有科研合同和其他法律文書的制約，本論文的科研成果屬于成都信息工程學(xué)院。 （ 4）學(xué)?？稍试S學(xué)位論文被查閱或借閱。 （ 2）學(xué)?？梢圆捎糜坝?、縮印或其他復(fù)制方式保存學(xué)位論文。除非另有說明，本文的工作是原始性工作。 在整個(gè)實(shí)習(xí)期間， 還得 到了同學(xué)的大力支持和幫助，在此表示衷心的感謝！ 聲 明 本論文的工作是 2021 年 2 月至 2021 年 6 月在成都信息工程學(xué)院網(wǎng)絡(luò)工程 系完成的。 這次實(shí)習(xí)，無論是從技術(shù)上還是對(duì)環(huán)境的適應(yīng)能力上講，對(duì)我今后步入社會(huì)都打下了一個(gè)良好的基礎(chǔ)。 致 謝 經(jīng)過三個(gè)月的艱苦努力，我終于完成了超市收費(fèi)系統(tǒng)的全部設(shè)計(jì)過程，并使該系統(tǒng)達(dá)到可實(shí)際應(yīng)用的階段。 ［ 4］ 巴克納爾． Delphi算法與數(shù)據(jù)結(jié)構(gòu) [M].北京： 中國(guó)電力出 版社。 參考文獻(xiàn) ［ 1］ 伊文敏． Delphi + SQL Server 數(shù)據(jù)庫(kù)應(yīng)用實(shí)例完全解析 [M].北京： 人民郵電出版社。由于這次設(shè)計(jì) 涉及到數(shù)據(jù)庫(kù)，也學(xué)到了不少編程 工具和數(shù)據(jù)庫(kù)連接的知識(shí)，對(duì)數(shù)據(jù)庫(kù)的操作有了進(jìn)一步的了解 。本文主要討論了各模塊功能設(shè)計(jì)，工作原理，程序?qū)崿F(xiàn)等問題。 在測(cè)試過程中 使用到調(diào)試技術(shù) 1. 采用調(diào)試語句，跟蹤數(shù)據(jù) 2. 嵌入對(duì)話框語句，輸出中間結(jié)果 3. 設(shè)置斷點(diǎn)，觀察程序在斷點(diǎn)附近的狀況 結(jié) 論 在學(xué)習(xí)了 Delphi 和數(shù)據(jù)庫(kù) ,對(duì)其有一定了解的情況下，完成了超市收費(fèi)系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn) 。 （功能運(yùn)行正常） 出庫(kù)明細(xì)的測(cè)試 : 選中按條形碼查詢 ,輸入正確條形碼則會(huì)顯示所輸入條形碼的出庫(kù)情況 ,若輸入 字符 ,則無查詢信息出現(xiàn) .選中按名稱查詢 ,輸入正確商品名稱則會(huì)顯示所輸入商品名稱對(duì)應(yīng)的出庫(kù)情況 ,若輸入數(shù)字或非正確商品名稱則無查詢信息出現(xiàn) 。 （功能運(yùn)行正常） 若選中會(huì)員結(jié)賬輸入存在