挑战习题
1/5单选题
难度:

1.下列结构示意图中,表示金属阳离子的是
A
B
C
D
提示1:
6Ziz56a75a2Q5piv5Y6f5a2Q5aSx5Y6755S15a2Q5b2i5oiQ55qE44CC
提示2:
5Lmf5bCx5piv6LSo5a2Q5pWw5bqU5aSn5LqO5qC45aSW55S15a2Q5pWw44CC
正确答案:RA==
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