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问题	高纯氮气的标准
释义	法律分析：纯度是氮气的一个重要技术参数,按国标氮气的纯度分为工业用氮气、纯氮和高纯氮三级,它们的纯度分别为99.5%(O20.5%),99.99%(O20.01%)和99.999%(O20.001%)。法律依据：《中华人民共和国标准化法》第四条制定标准应当在科学技术研究成果和社会实践经验的基础上，深入调查论证，广泛征求意见，保证标准的科学性、规范性、时效性，提高标准质量。
随便看	非上市公司的类型有哪些私营企业和上市公司的区别我们应该如何准备证据以保证它们被审核和接受？举证材料怎么提交如何举证产品质量问题如何举证导氮教育不退费去哪里投诉导氮教育不退费去哪里投诉导氮教育不退费去哪里投诉导氮教育不退费去哪里投诉？明星嫖娼会进监狱吗如何有效地质疑控方证人证言？大麦不退票违反消保法吗作品版权登记号怎么查？作品版权登记号怎么查学信网个人学历查询证书编号作品版权登记号怎么查学信网个人学历查询证书编号学信网证书编号怎么查询作品版权登记号怎么查合同书号是什么意思合同书号是什么意思？合同书号是什么意思协议书号是什么意思协议书号是什么意思 law of the nation of residence law of the open seas law of the People's Bank of China law of the people's deputies law of the place of abode law of the place of destination law of the place of disbursement law of the place of draft law of the place of indorsement law of the place of payment law of the place of performance law of the place of signature law of the place of the buyer's business office law of the place where a commercial paper is signed law of the place where a marriage is registered law of the place where an negotiable instrument is signed law of the place where a right is claimed law of the place where a tort is committed law of the place where damage is caused law of the place where the nonpayment occurs law of the place where the property is situated law of the place where the real property is situated law of the press law of the realm law of the Red Cross Society

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