题干

经测定某中性溶液中含有Mg2+、Al3+、NO3、SO42四种离子组成,其中Mg2+、Al3+、SO42的个数比不可能为(  )


A:3:1:10

B:3:5:1  

C:5:10:1

D:3:1:3

上一题 下一题 0.0难度 选择题 更新时间:2011-02-21 01:12:20

答案(点此获取答案解析)

A

同类题1

阅读古诗《观沧海》,完成小题。
                                                                                                观沧海
                                                                                                  曹操
                                                                                       东临碣石,以观沧海。

                                                                                       水何澹澹,山岛竦峙。

                                                                                       树木丛生,百草丰茂。

                                                                                       秋风萧瑟,洪波涌起。

                                                                                       日月之行,若出其中;

                                                                                       星汉灿烂,若出其里。

                                                                                       幸甚至哉,歌以咏志。