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山西省近日下发《关于明确山西省景区玻璃栈道和游乐场所设施安全监管职责的通知》，明确全省景区玻璃栈道等高风险旅游项目和游乐场所设施安全监管职责，以加强山西旅游景区玻璃栈道、玻璃吊桥、玻璃滑道、玻璃观景平

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在化学分析领域，每一次精准的测量都离不开标准物质的校准与验证。特别是在复杂有机化合物的分析中，甲醇中邻二甲苯溶液标准物质以其独特的稳定性和适用性，成为了众多实验室的首选。多年的从业经验让我深知，选择正

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