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在化学分析与环境监测的广阔领域里，精准的pH值测量是基础中的基础。多年的实验室工作经验告诉我，一个微小的pH偏差，都可能对实验结果产生重大影响。而氢氧化钙pH溶液标准物质，正是那把确保我们测量准确无误

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车辆投保后，在一次夜间行驶的过程中突然着火。当庄河市民张某向某保险公司要求理赔时，对方却以种种理由拒绝赔付。张某一纸诉状将保险公司告上法庭，最近，庄河法院判决保险公司败诉。 2004年3月，庄河一

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