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[问答题] 什么叫选矿?

胸痛憋闷,痛引肩臂者为() ["胸痹","真心痛","痰湿犯肺","肝气郁滞","肝火犯肺"] 前胡的功效是()瓜蒌的功效是() ["既能清肺化痰,又能止咳平喘","既能清肺化痰,又能软坚散结","既能清肺化痰,又能清肝明目","既能清肺化痰,又能利气宽胸","既能降气化痰,又能宣散风热"] 男性,25岁。纳差,黄疸,被诊断为病毒性肝炎。属于哪类疾病() ["甲类传染病","乙类传染病","丙类传染病","心血管疾病","消化系统疾病"] 在体积不变情况下弗林图解中K=1的应变椭球体形态是() ["旋转扁球体","长形椭球体","扁形椭球体","平面应变椭球体"] 软流圈 什么叫选矿?
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