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【单选题】
二硫腙比色法测定铅、铜等金属离子时,往往加入EDTA作为()A.
掩蔽剂
B.
发色剂
C.
皂化剂
D.
磺化剂
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举一反三
【简答题】完形填空。 A French student went to London for his holiday. He thought,'I know 1 English. But I think people can understand me.' One day he went to a hotel and sat down at a 2 . He wanted to__3__a cup of t...
【简答题】.定量分析的过程包括取样、试样制备与溶解、_______________、______________,结果计算等步骤(要按过程次序填写)。
【单选题】Auto Design Competition By Harper Lewis West Lake Town, Jackson City(February 7)- The International Convention of Auto Design(ICAD)held its annual conference and an awards banquet in West Lake Town at...
A.
Auto design professionals.
B.
Magazine publishers.
C.
Artists.
D.
Advertising executives.
【简答题】整个分析过程一般包括下面几个步骤: 、 、试样的制备;分析测定;结果的计算和表达。
【简答题】完形填空。 A French student went to London for his holiday. He thought,'I know 1 English. But I think people can understand me.' One day he went to a hotel and sat down at a 2 . He wanted to 3 a cup of tea...
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