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婴幼儿睡眠的正确姿势是（）。
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简述教育劳动起源说的主要观点。
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SGS检查中，库存区和破包区之间的距离最少为（）。
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与民事诉讼比，行政处理机制在解决环境侵权纠纷方面意义？
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下列何项不是健脾丸的药组（）。
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按正常使用极限状态设计时，应考虑（）和（）两种作用效应组合。
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If the period between twenty and thirty is the critical one in the formation of intellectual and professional habits, the period below twenty is more important still for the fixing of personal habits, properly so called, such as vocalization and pronunciation, gesture, motion, and address. Hardly ever is a language learned after twenty spoken without a foreign accent. Hardly, ever, indeed, can he even learn to dress like a gentleman-born. Hardly ever, indeed, no matter how much money there be in his pocket, can he eve n learn to dress like a gentleman-born.
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社会心理学在确立时期的特征是（）。
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反补贴税
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B细胞具有的CD分子是（）