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安全使用电器的做法是：（）
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领导工作的基本原理包括（）
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在甲型肝炎病程中，传染性最强的时期为（）
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要建立有效的绩效管理体系，企业必须认识到绩效管理系统的()。A.封闭性B.可靠性C.可控性D.原则性
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在不同结构化程度的教育活动组成的连续体中，方案教学处在低结构化活动的一侧。如果采用由教师决定教学内容，让所有的儿童在同一时间内学习同一专题中的同一内容的方法，也就是如果采用相对位于右侧的单元教学的方式来设计和实施教育活动，它仍然还是方案教学。
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职业的测量是（）测量
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三个样本率分别为82.9%，84.0%，53.9%，评价其高低的方法是（）
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董事会最重要的职责为()。
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Once we learn the rules for map reading, they seem so simple: up is north, blue is water, a star stands for a capital. But when and how do we learn to read a map? Research shows that even three-year-olds can master, at least in a basic way, the key map-reading concept(概念): a map is a two-dimensional symbol(二维的符号)for three-dimensional space. Linda Acredolo of the University of California, showed a child a map of a room pointed out on it where a toy was hidden and asked the child to find that toy. Depending on the maps orientation(方位), about half the three-year-olds could successfully do so. Three years may be the age at which the ideas become fully understood. Judy Deloache of the University of Illinois let children watch her hide a small toy in a scale model of a room and asked them to find a large one in a real room. "A three-year-olds can do it, but a two-year-olds has no idea that the model has to do with anything larger, " she says. But even if the basic concept is there early, Lynn Liben and Roger Downs of Pennsylvania State University found that children still have a lot to learn. Second graders believe that north is always at the top of a map because of the hanging maps they have seen. "If you asked them to close their eyes and point in the direction of north, often theyll point straight up," says Lihen. She says that children get map-reading skills gradually, and teachers must begin by using maps of familiar areas: their own classrooms, homes, and neighbourhoods.The first two experiments show that______.A．children have better understanding than grown-upsB．children have special natural ability for map readingC．children are more interested in toys than in mapsD．children can start to learn map-reading early
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著名法学家江平认为：“随着中国社会主义市场经济改革的发展，中国的法律制度和法律观念也发生了重大变化。从某种意义上可以说是罗马法精神在中国的复兴，私法精神在中国的复兴，人文主义在中国的复兴。”那么应当怎样来理解和认识罗马法精神在中国的复兴呢？（）