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题型:名词解释 气相色谱法测定海水中PCBs时,富集样品中多氯联苯所用的国产1300(I)型树脂(相当于AmberliteDAX-2)属于()吸附剂。A、键合硅胶类B、有机聚合物C、碳基D、正相固相 查看答案
题型:名词解释 工期索赔,一般指()要求延长工期。A.分包人向业主或者分包人向承包人 B.承包人向业主或者分包人向承包人 C. 承包人向业主或者承包人向分包人 D.业主向承包人或者分包人向承包人 查看答案