北京时间12月2日

（2025-09-21 22:38）

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在化学分析领域，随着技术的不断进步和应用需求的日益多样化，对标准物质的要求也越来越高。特别是在氯乙酸甲酯的分析过程中，拥有一款精准可靠的标准物质，对于确保分析结果的准确性和可重复性至关重要。一、氯乙酸

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中国消费者报深圳讯记者黄劼）部分培训机构存在售前虚假宣传承诺、诱导贷款支付培训费问题，以及部分学习机、阅读器和早教机的在线课程服务存有风险，这是今年上半年深圳消费者投诉出现的热点。深圳市消委会近日发布