水中总碱度溶液标准物质：精准测量水质碱度
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昨日纯碱主力合约2305震荡下行，收于2808元/吨，下跌51元/吨，跌幅1.78%。据昨日隆众资讯数据，本周纯碱产量 60.20 万吨，环比减少3.42%，纯碱库存 27.95 万吨，环比+2
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INE原油涨逾1%，释储预期兑现，低位买盘提振油市信心
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王传福：我就想给中国人争一口气
- 中国消费者报北京讯记者吴博峰）10月31日，交通运输部在例行新闻发布会上表示，近年来，交通运输部积极实施应对人口老龄化国家战略，多措并举提升适老化无障碍出行服务水平。今年1月，交通运输部、国家铁路局等
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