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中国消费者报北京讯记者孟刚）1月8日，国家发展改革委、财政部发布《关于2025年加力扩围实施大规模设备更新和消费品以旧换新政策的通知》以下简称《通知》），明确享受以旧换新补贴的家电产品，由去年的8类增

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在化学分析与检测领域，标准物质的准确性和一致性是确保实验结果可靠性的基石。特别是在处理如二硫化碳中乙苯溶液这类复杂体系时，标准物质的选择、制备以及分析过程中的每一个细节都至关重要。一、标准物质的选择与

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