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题目：
单选题
A喉头水肿
B支气管哮喘
C慢性阻塞性肺气肿
D重症肺炎
E气管异物
答案：
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治疗瘀血内结型积证的主方是：（）
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根据《中华人民共和国突发事件应对法》，下列哪几项特征属于我国的应急管理体制所有？（）
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只能长在白蚁窝上的是（）。
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电流的方向是如何规定的？自由电子运动的方向和电流方向有何关系？
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社区健康促进的基本单位是（）
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真实性评估是另类评估。
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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11处填上正确答案（）
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论述中国园林发展经历的几个历史阶段及其历史文化背景。
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妇产科临床常需测定的激素有________、________、________、________、________、________、________等。其中雌激素可分为________、________、________、________。
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保护渣粘度越高，熔渣流动性越好。