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在夏季环境温度最高温度为40℃时，在额定负荷下，变压器绕组最热点的温度可达（）℃。
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什么是职业健康监护？
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作业时不擅自使用不熟悉的（）和（）。
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市场底量与市场潜量之间的距离表示需求的营销()。
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刘向父子的《七略》与班固的《汉书艺文志》之间有什么关系？
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体现前运算阶段儿童认知特点的活动是（）。
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依法保护适龄儿童接受九年义务教育的权利，国家作了哪些规定？
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肺心病慢性呼吸衰竭患者，血气分析结果：pH7.188，PaCO275mmHg，PaO250mmHg，HCO3-27.6mmol/L，BE-5mmol/L，其酸碱失衡类型是（）.
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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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动液面波动范围超过±（）m必须查明原因或复测验证。