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述填料塔的结构与操作？塔填料应满足什么要求？
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社会问题剧
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在非洲进行考察的动物学家们，通过几年的观察，看到狮子吃饱后总是懒洋洋地躺在地上。于是得出结论：所有的狮子吃饱后都懒得动。
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不退扭的成缆，当绞笼旋转一转，放线盘跟着转一转，绝缘线芯扭转（）度。
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临床需要做超声的情况是： ①估计胎儿体重和胎龄； ②评价胎儿生长发育是否正常； ③确定胎儿发育与胎龄不相称时； ④横膈下（）
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使用（）刀刻鱼的鳞片最为简单快捷。
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在案件审理过程中如何贯彻实事求是的原则？
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一个企业要与其他企业进行协作发展，必须有自己独到的____，否则可能被排斥在合作阵营之外。A、产品B、营销手段C、核心竞争力D、供应链
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Shopping habits in the United States have changed greatly in the last quarter of the 20th century. （1） in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was （2） on both sides with many （3） businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. （4）,some shops offered （5） .These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. （6） in the 1950s, a change began to （7） .Too many automobiles had crowded into Main Street （8） too few parking places were （9） shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces （10） the city limits. Open space is what their car-driving customers needed. And open space is what they got （11） the first shopping centre was built. Shopping centres, or rather malls, （12） as a collection of small new stores （13） crowded city centres. 14 by hundreds of free parking space, customers were drawn away from （14） areas to outlying malls. And the growing （16） of shopping centres led （17） to the building of bigger and betterstocked stores. （18） the late 1970s,many shopping malls had almost developed into small cities themselves. In addition to providing the （19） of one stop shopping, malls were transformed into landscaped parks, （20）benches, fountains, and outdoor entertainment. 请在17处填上正确答案（）
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被罗曼·罗兰誉为此书是“我们时代里最伟大的诗史，是近代的《伊利亚特》”这本书是（）