【正文】 s botox and face lifts, there In this article, you39。women in ancient Chinaair and harmful UV rays. Most Chinese women perfer fairer plexions, which means they have to do more work to stay beautiful during the hottest timerseverance and mitment.Summer is here, and so are thean, the starting point of the ancient Silk Road, a trade channel established more than 2,000 years ago linking China, Central Asia and Europe.The pursuit of beauty is a mon goals cooperation with Central Asian countries, a senior official said. Shaanxi Governor Lou Qinjian said the province is fresh, rich and unique, as it was when it anchored one end of the ancient Silk Road. It is the best option for acmodating industrial transfers from East China or the world at large, he said on Wednesday in Xi39。s business development. Rudy Buttignol, president of the public broadcasting pany in British Columbia, Canada, said his work requires frequent travel to Chengdu and the policy makes the trips easier. Data from the city39。s largest breeding and research center. Three days are long enough for foreign visitors to visit those iconic tourist spots, he noted. The city is home to the remains of the Jin sha civilization that dates back more than 3,000 years as well as the Qing cheng Mountains and the Du jiang yan irrigation system. Qing cheng has long been recognized as the birthplace of Taoism, China39。s 72hour visafree policy has attracted wide attention from both Chinese and foreign experts and businessmen since it took effect on Sept 1 last year. The program permits citizens from 51 countries and regions including the United States, Australia, Canada and Japan who have valid visas and flight tickets to a third country to spend three days in the city. The capital of Sichuan province is the first city in the western region of China to offer foreign tourists a threeday visa and the fourth nationwide to adopt the policy following Shanghai, Beijing and Guangzhou. Li Zhiyong, deputy dean of the tourism institute at Sichuan University, said the move contributes to a large increase in the number of overseas tourists and raises the city39。s long history of fine ceramics lures followers from across the world, report Peng Yining and Hu Kaiyong in Jingdezhen, Jiangxi province. Dressed in paintstained coveralls, China De La Vega easily navigated the maze of alleyways running alongside a ceramics factory in Jingdezhen, Jiangxi province.The 31yearold Australian potter and painter wound her way through armies of onemeterhigh ceramic Buddhas and piles of porcelain shards while nodding greetings to the workers and residents. She said the locals are used to seeing foreigners in Jingdezhen, China39。porcelain capital39。 Preserving the ancient traditions Foreigners flock to China39。s 39。缺點．iiL計計算困難、施工技術(shù)要求高、連接構(gòu)造較復(fù)雜。拱橋的缺點主要有：(1)自重較大，結(jié)構(gòu)比梁橋復(fù)雜；(2)建筑高度大；(3)下部結(jié)構(gòu)負(fù)擔(dān)重，對地基要求高；(4)軍事適應(yīng)性差。其作用分別為：(1)縱向主鋼筋：抵抗拉力，一般布置在梁肋的下緣；(2)架立鋼筋：固定主筋、斜筋、箍筋，形成骨架；(3)斜鋼筋：抵抗主拉應(yīng)力，增強梁體的抗剪強度；(4)箍筋：增強主梁的抗剪強度；(5)分布鋼筋：防止梁肋側(cè)面因混凝土收縮等原因引起的裂縫。在完整的排水系統(tǒng)中，應(yīng)將排水管道直接引向地面或在主梁肋板問貨箱兩種設(shè)置的縱向斜槽或縱向排水管，通向橋臺，并用管道將雨水引向地面，應(yīng)注意縱向管道的連接，使橋梁縱向活動不受影響。(2)橋墩、橋臺、墩臺基礎(chǔ)(統(tǒng)稱下部結(jié)構(gòu))，是支承橋跨結(jié)構(gòu)并將恒載和車輛等荷載傳至地基的建筑物。簡述橋梁的組成結(jié)構(gòu)? 答案要點：橋梁分為上部結(jié)構(gòu)(橋跨結(jié)構(gòu))和下部結(jié)構(gòu)，下部結(jié)構(gòu)包括橋墩、橋臺、基礎(chǔ)。 5．為什么盆式橡膠支座的抗壓能力比板式橡膠支座大?答案要點：一般的板式橡膠支座處于無側(cè)限受壓狀態(tài)，故其抗壓強度不高，加之其位移量取決于橡膠的容許剪切變形和支座高度，要求的位移量愈大，支座就要做得愈厚，所以板式橡膠支座的承載力和位移值受到一定限制。 4．什么是合理的拱軸?答案要點：拱軸線的形狀直接影響主拱截面的內(nèi)力分布與大小，最理想的拱軸線是使外荷載作用下的主拱任一截面只有軸向力，而無彎矩與剪力，即處于純壓狀態(tài)，截面壓應(yīng)力分布均勻。車輪荷載在橋面鋪裝層中呈45。 2．裝配式梁橋構(gòu)件劃分應(yīng)遵守哪些規(guī)則?答案要點：(1)根據(jù)建橋現(xiàn)場實際可能的預(yù)制、運輸和起重條件，確定拼裝單元的最大尺寸和重量；(2)拼裝接頭的數(shù)量要少，并應(yīng)盡量設(shè)置在內(nèi)力較小處，同時，接頭形式要牢固可靠，施工，要方便；(3)構(gòu)件的形狀和尺寸應(yīng)力求標(biāo)準(zhǔn)化，增強互換性，構(gòu)件的種類應(yīng)盡量減少。1．橋梁縱斷面設(shè)計時，為什么要進行分孔設(shè)計?橋梁縱斷面設(shè)計時，如何分孔影響到橋梁的使用效果和施工難易等，更主要是在很大程度上關(guān)系到橋梁的總造價。5．橋梁工程中，絕對合理的拱軸是找不到的，其原因是什么？(1)主拱總荷載是恒載和活載的組合，由于活載（車輛、行人）的頻繁變動，總荷載將隨時發(fā)生變化，因此，以一條選定的拱軸線去適應(yīng)