年产5万吨氯化法钛白粉工程项目建议书(编辑修改稿)

年产5万吨氯化法钛白粉工程项目建议书(编辑修改稿)内容摘要：

e i f the earth was the centre of the sol ar system and al pl as went round i t. Coperni cus had thought l ong and hard about these probl em s and tri ed to fi nd an answer. H e had col ected observations of the stars and used al l his m athem ati cal knowl edge to explai n them . But only hi s new theory coul d do that. So between 1510 and 1514 he worked on i t, gradual y im provi ng hi s theory until he fel t i t was pl ete. In 1514 he showed i t pri vatel y to hi s fri ends. The changes he m ade to the ol d theory were revol uti onary. H e pl aced a fi xed sun at the centre of the sol ar system with the pl as goi ng round i t and only the m oon stil goi ng round the earth. H e al so suggested that the earth was spinni ng as it went round the sun and this expl ai ned changes i n the movem ent of the pl as and i n the bri ghtnes of the stars. Hi s fri ends were enthusi asti c and encouraged him to publi sh hi s i deas, but Coperni cus was cauti ous. H e di d not want to be attacked by the Chri sti an Church, so he onl y publ i shed i t as he lay dyi ng i n 1543. Certai nl y he was ri ght to be careful. The Chri sti an Church rejected hi s theory, sayi ng i t was agai nst God’s i dea and peopl e who supported i t woul d be attacked. Yet Coperni cus’ theory i s now the basi s on whi ch al our i deas of the uni verse are bui l t. Hi s theory repl aced the Chri sti an i dea of gravi ty, whi ch sai d thi ngs tel l to earth because God created the earth as the centre of the uni verse. Coperni cus showed thi s was obvi ousl y wrong. N ow peopl e can see that there i s a di rect l i nk between his theory and the work of Isaac N ewton, Al bert Ei nstei n and Stephen H awki ng. Uni t 2 PUZZLES IN GEOGRAPH Y Peopl e m any wonder why di fferent words are used to descri be these four countri es: England, Wal es, Scotl and and N orthern Irel and. You can cl ari fy thi s questi on i f you study Bri ti sh hi story. Fi rst there was Engl and. Wal es was li nked to i t i n the thirteenth century. N ow when peopl e refer to Engl and you fi nd Wal es i ncluded as wel l. N ext England and Wal es were joi ned to Scotl and in the seventeenth century and the nam e was changed to “Great Britai n”. H appi l y thi s was ac pl ished wi thout confl ict when King Jam es of Scotland becam e King of Engl and and Wal es as wel l. Fi nal ly the Engl i sh government tri ed i n the earl y twenti eth century to form the Uni ted Ki ngdom by getti ng Irel and connected i n the sam e peaceful way. H owever, the southern part of Irel and was unwil li ng and broke away to form its own governm ent. So onl y N orthern Irel and joi ned wi th Engl and, Wal es and Scotl and to be e the Uni ted Ki ngdom and this was shown to the worl d i n a new fl ag cal ed the Uni on Jack. To their credi t the four countri es do work together i n som e areas(eg, the currency and i nternati onal rel ati ons), but they sti l have very di fferent i nsti tuti ons. For exam pl e, N orthern Irel and, England and Scotl and have di fferent educati onal and l egal system s as wel l as di ferent footbal team s for peti ti ons li ke the Worl d Cup! Engl and i s the largest of the four countri es, and for conveni ence i t i s di vi ded roughl y i nto three zones. The zone nearest France i s cal ed the South of Engl and, the m i ddl e zone i s cal l ed the Mi dlands and the one nearest to Scotl and i s known as the N orth. You fi nd m ost of the popul ati on settl ed i n the south, but m ost of the i ndustri al ci ti es i n the Mi dlands and the N orth of England. Al though, nati onwide, these citi es are not as l arge as those i n Chi na, they have worl dfam ous footbal l team s and som e of them even have two! It i s a pi ty that the i ndustri al ci ti es buil t i n the ni eenth century do not attract vi si tors. For hi stori cal archi tecture you have to go to ol der but sm al l er towns bui lt by the Romans. There you wil l find out m ore about Bri ti sh hi story and cul ture. The greatest hi storical treasure of al i s London wi th i ts m useum s, art col ecti ons, theatres, parks and buil di ngs. It i s the centre of nati onal governm ent and i ts admi ni strati on. It has the ol dest port buil t by the Rom ans i n the first century AD, the ol dest buil di ng begun by the Angl oSaxons i n the 106os and the ol dest castl e constructed by l ater N orm an rul ers i n 1066. There have been four sets of i nvaders of Engl and. The first invaders, the Rom ans, l eft thei r towns and roads. The second, the Angl oSaxon, l eft thei r l anguage and their government. The third, the Vi kings, influenced the vocabulary and pl acenames 年产 5 万吨氯化法钛白粉工程 项 目 建 议 书 二○○六年十二月 and sol ve thi s probl em . H e knew that chol era woul d never be control ed until i ts cause was found. H e becam e i nterested i n two theori es that possi bl y expl ained how chol era kil l ed peopl e. The fi rst suggested that chol era m ul ti pl i ed i n the air. A cl oud of dangerous gas fl oated around until i t found i ts vi ctim s. The second suggested that peopl e absorbed thi s di sease into their bodi es wi th thei r m eal s. From the stom ach the di sease qui ckl y attacked the body and soon the affected person di ed. John Snow suspected that the second theory was corect but he needed evi dence. So when another outbreak hi t London i n 1845, he was ready to begi n his enqui ry. As the disease spread qui ckly through poor nei ghborhoods, he began to gather i nform ati on. In two parti cul ar streets, the chol era outbreak was so severe that m ore than 500 peopl e di ed i n ten days. H e was determ i ned to fi nd out why. Fi rst he marked on a m ap the exact pl aces where al the dead peopl e had l i ved. Thi s gave him a val uabl e cl ue about the cause of the di sease. Many of the deaths were near the water pum p i n Broad Street (especi al y nu。