... 危险品分类 CLASS 危险物品分类 classification of dangerous goods 危险场所的分类 Classification of hazardous areas ...
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hazardous classification of dangerous goods 危险货物的危险程度
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The business scope of intending to conduct the transport of dangerous goods by air and the classification of the dangerous goods;
拟实施危险品航空运输的经营范围和危险品类别；
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