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塑料分类的常用方法有哪些，各自包含哪些种类？
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计算转弯离场保护区参数时，转弯坡度要求为：（）.
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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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医学模式转变在医学伦理学方面的重要性是指（）
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在电气设备火灾中，属于可燃物的是（）。
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婴幼儿会从别人的语言评价中理解“乖”和“不乖”的含义，从成人的评价中逐渐学会（）。
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关于SARS的诊断不正确的是（）
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《金匮要略?水气病脉证并治》提出："诸有水者，腰以下肿，当____，腰以上肿，当____乃愈。"
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翻译：民无饥者不得食、寒者不得衣、劳者不得息。