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下列式子是二次根式的是?A.
B.
6
C.
D.
E.
(xy异号)
F.
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【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)。
【简答题】千足金指的是什么，怎样判断是不是千足金？
【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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