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增大材料的孔隙率，则其抗冻性能（）。
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职业素质是指劳动者在一定的生理和心理条件的基础上，通过教育、劳动实践和自我修养等途径而形成和发展起来的，在职业活动中发挥重要作用的内在基本品质。根据以上定义，下列不属于职业素质的是（）。
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 better瞫tocked 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15处填上正确答案（）
下列（）一般不集成在微机的主板上。
患者女性，60岁，因“突然意识不清1小时”来诊。查体：血压170/100mmHg（1mmHg=0.133kPa）。颅脑CT显示右侧大脑半球3cm×3cm×6cm高密度影，诊断为脑出血。此时患者最重要的治疗措施是（）
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