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轮胎式推土机作业时，轮胎气压适宜（）。
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IPXRIP协议使用（）作为判断路由器选择的依据
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只要性质无互相影响，一般商品可以储存在一起。
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软件测试不包括（）方面的差错和纠错。
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肝海绵状血管瘤和原发性肝细胞的增强扫描各有什么特点？
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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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定量研究
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女性，26岁，诊断为风湿性心脏病二尖瓣关闭不全病史2年，出现乏力，盗汗，低热3个月，当地按感冒处理，服用多种抗生素，服抗生素时可暂时退热，2～3天后又再发热。体查：贫血貌，杵状指，T38℃，血压110／70mmHg，心率96次／分，Sl降低，S2正常，A：SM3／6级反流样杂音，超声心动图见5mm×5mm的赘生物。诊断为亚急性细菌性心内膜炎。你认为该例赘生物最可能附着的部位是（）
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创新管理能力是指企业从整体上、战略上安排技术创新的能力。这一能力主要由三方面反映：创新战略、创新机制和创新速度。()
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教育学作为一门独立形态的学科，形成于资本主义社会中期。