【正文】 uth of jagged teeth that had once been a viewport. Blood pulsed in her face as she hung above a bottomless blac k hole. Large objects turned lazily in the sunlight. One of them was the engine module of Ringmaster, out there in front of her where it had no right to be. She could see the broken stump of the connecting stem. Her ship was ing apart. Oh, shit, she said, then had a vivid recollection of a tape she had once beard from the flight recorder of an airliner. Tha t had been the last word the pilot had uttered, seconds before impact, when he knew he was going to die. She knew it, too, and the thought filled her with a vast disgust. She watched in dull horror as the thing that had the engines wrapped more tentacles around it. it reminded her of a Portuguese man o39。t sure whose voice it was, but the fear reached her. She pushed, and mana ged to open her seat belt with one hand while holding her self away from the panel with the other. She slipped out to the side and saw her chair bounce across the shattered array of dials, stick briefly in the frame of the broken port, and launch into space. She thought her legs were broken, but found she could move them. The pain lessened as she drew on reserves of strength to help Bill out of his cha ir. Too late, she saw that his eyes were closed, his forehead and the inside of his helmet smeared with blood. As his body slithered loosely over the control panel she saw the dent his helmet had made in it. She fought for a grip on his thigh, then his calf, his booted foot, and he was falling, falling in the middle of a glittering shower of glass. She came to her senses crouched in the leg well under the control panel. She shook her head, unable to recall what had put her there. But the force of deceleration was not so great now. T hemis had succeeded in bringing Ringmasteror what was left of itup to its own rotational speed. No one was talking. A hurricane of breathing came through the spea ker in her helmet, but no words. T here was nothing to say。s alive. What did you say? Bill was trying to hold himself secure with both hands m the instrument panel. He was strapped solidly to his chair, but the bolts which held it to the floor had broken. The ship shuddered again, and Cirocco39。s got us. Cirocco hurried back to her station, just in time to miss seeing the grapple sweep over them. The ship jumped again, and awful noises came from the rear. What did it look like? Great big octopus tentacles without the suckers. He sounded shaken. Tthere were hundreds of them, waving around all over. The ship gave an even greater lurch, and more alarms began to sound. A firestorm of red lights spread across her controls. We39。s programing she was able to fire all the thrusters on the side of the ship facing Themis, but it was not nearly enough. The great mass of Ringmaster barely moved. Other than that, she could only sit and monitor the automatic engine sequencing and count the seconds as they dragged by. In a short time she knew they could not escape. That thing was big, and moving faster. Bill appeared, suited, and she scrambled into SCIMOD to don her own suit. Five anonymous figures sat be lted to acceleration c ouches, not moving, staring at the screen. She clamped her helmet, and heard chaos. Quiet down. The chatter died away. I want silence on the suit channel unless 1 ask you to speak. But what39。t you want to e up and see this? Cirocco saw her shake her head. She scanned the numbers marching across a tiny screen. And lose the best observing time of the whole trip? You39。m going off this channel. She slapped the appropriate switch. Anybody who wants to take a look outside, this is going to be your only chance. It was tight, but August and April and Gene and Calvin man aged to squeeze into the cramped room. After checking with Gaby, Cirocco turned the ship niy degrees. Saturn was a dark gray hole, seventeen degrees wide, covering 1000 times the area of the moon as seen from Earth. The rings w ere an incredible forty degrees from side to side. They looked like solid, brilliant metal. Ringmaster had e in north of the equator, so the upper face was presented to them. Each particle was being lit from the opposite side, presenting a thin cresce nt, like Saturn. The sun was a brilliant point of light in the ten o39。 另外，在系統(tǒng)開(kāi)發(fā)過(guò)程中同組的同學(xué)也給于我很大的幫助，幫助解決了不少的難點(diǎn)，使得系統(tǒng)能及時(shí)開(kāi)發(fā)完成，還有同樣給與我不少幫助，這里一并表示感謝。 可擴(kuò)充內(nèi)容 使用者的權(quán)限，成績(jī)管理部分，數(shù)據(jù)庫(kù)備份和恢復(fù)等。圖書(shū)信息的管理，需要圖書(shū)館來(lái)完成。 缺點(diǎn) 學(xué)校管理系統(tǒng)的局限性：該系統(tǒng)是單機(jī)版，所以使用范圍得到了限制。 通過(guò) 圖書(shū)館管理系統(tǒng)，實(shí)現(xiàn)圖書(shū)檢索和借閱，從而一方面能作到資料共享。 學(xué)籍管理系統(tǒng)以學(xué)號(hào)和員工號(hào)生成，能夠快速的錄入成績(jī)、設(shè)置課程等，極大的方便了學(xué)校對(duì)于學(xué)生成 績(jī)和員工工作狀況的管理；而信息管理系統(tǒng)是與學(xué)籍管理系統(tǒng)數(shù)據(jù)共享的，其中各式各樣的報(bào)表方便了信息的管理；圖書(shū)館管理系統(tǒng)則是現(xiàn)代學(xué)校的典型的一個(gè)管理系統(tǒng)，它實(shí)現(xiàn)了對(duì)書(shū)籍的各式管理。 (3)用戶(hù)管理，可以進(jìn)行添加和刪除用戶(hù)。 2. 應(yīng)用系統(tǒng)安裝 直接拷貝：把應(yīng)用系統(tǒng)光盤(pán)插入到驅(qū)動(dòng)器中，在任意盤(pán)目錄下建立子文件夾畢業(yè)設(shè)計(jì)，將光盤(pán)根目錄中所用的文件拷貝到任意盤(pán)文件夾畢業(yè)設(shè)計(jì)中。此外，參考了同學(xué)的設(shè)計(jì)，因?yàn)樗麄?是把功能做在外面所以可以在登陸時(shí)界面后就能發(fā)現(xiàn)，這明顯與我們做的有沖突換句話(huà)說(shuō)是不值得我們借鑒，因此我要朋友詢(xún)問(wèn)了適合我們的權(quán)限設(shè)置，在系統(tǒng)中添加個(gè)模塊，然后在代碼中再增加語(yǔ)句。 針對(duì)學(xué)校管理的需求，通過(guò)對(duì)學(xué)校內(nèi)部管理內(nèi)容和數(shù)據(jù)流程分析，設(shè)計(jì)如下所示的數(shù)據(jù)項(xiàng)和數(shù)據(jù)結(jié)構(gòu)： 數(shù)據(jù)庫(kù)：數(shù)據(jù)庫(kù) .mdb 資料表 1：按課程類(lèi)型 列名 數(shù)據(jù)類(lèi)型 可否為空 說(shuō)明 課程類(lèi)型 文本 否 cancel 數(shù)字 是 資料表 2：班級(jí)表 列名 數(shù)據(jù)類(lèi)型 可否為空 說(shuō)明 年級(jí) 文本 是 教室 文本 是 專(zhuān)業(yè) 文本 否 年制 文本 是 班主任 文本 是 備注 文本 是 Cancel 數(shù)字 是 資料表 3：畢業(yè)設(shè)計(jì)表 列名 數(shù)據(jù)類(lèi)型 是否為空 說(shuō)明 學(xué)號(hào) 數(shù)字 否 姓名 文本 是 畢業(yè)設(shè)計(jì)課題名 文本 是 指導(dǎo)老師名 文本 是 指導(dǎo)老師所在 文本 是 資料表 4：補(bǔ)考表 列名 數(shù)據(jù)類(lèi)型 是否為空 說(shuō)明 學(xué)號(hào) 文本 是 姓名 文本 是 課程代號(hào) 文本 是 課程名稱(chēng) 文本 是 學(xué)期 文本 是 成績(jī) 文本 是 Cancel 數(shù)字 是 資料表 5：成績(jī)表 列名 數(shù)據(jù)類(lèi)型 是否為空 說(shuō)明 學(xué)號(hào) 文本 是 姓名 文本 是 課程代號(hào) 文本 是 課程名稱(chēng) 文本 是 學(xué)期 文本 是 成績(jī) 文本 是 績(jī)點(diǎn)數(shù) 文本 是 Cancel 數(shù)字 是 資料表 6：各班課程 列名 數(shù)據(jù)類(lèi)型 是否為空 說(shuō)明 專(zhuān)業(yè) 文本 是 學(xué)期 文本 是 課程代號(hào) 文本 是 課程名稱(chēng) 文本 是 Cancel 數(shù)字 是 資料表 7：積考表 列名 數(shù)據(jù)類(lèi)型 是否為空 說(shuō)明 學(xué)號(hào) 文本 否 姓名 文本 是 課程代號(hào) 文本 否 課程名稱(chēng) 文本 是 學(xué)期 文本 是 成績(jī) 文本 是 Cancel 數(shù)字 是