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下列陈述Ⅰ、Ⅱ正确并且有因果关系的是(    )

选项              陈述Ⅰ                                                                     陈述Ⅱ

A                    浓H2SO4有吸水性                                               浓H2SO4可用于干燥NH3

B                    SO2有漂白性                                                        SO2可使溴水的橙色褪去

C                   Mg有还原性                                                        电解MgCl2饱和溶液可制备Mg

D                    锌金属性比铁强                                                  海轮外壳上装锌块可减缓腐蚀

高三化学选择题中等难度题

少年,再来一题如何?
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