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【单选题】
食品检验往往采用抽样检验，抽样的基本原则包括（）。
A.
随机性、代表性
B.
客观性、独特性
C.
主观性、针对性
D.
全面性、可追溯性
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【判断题】中医学认为黄褐斑的病机为肾虚、脾虚、肝郁,气血不能上荣于面,多与肝、脾、肾三脏关系密切。( )。
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