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在化学分析与实验室研究的广阔天地里，每一种试剂都扮演着不可或缺的角色，而甲醇标准品更是其中的佼佼者。基于多年的行业经验，我深知实验室对基准试剂的严苛要求——不仅要纯度高、稳定性

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中国消费者报上海讯记者刘浩）近日，有消费者反映，用苹果手机购买视频软件的会员服务，价格比安卓手机贵。对此，上海市闵行区消费者权益保护委员会对比了苹果、安卓、电脑三个渠道的5款视频软件会员收费情况。结果

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