????ìa  ?ú￠ù 91ExaM.orgS2-?￠￠úFe2+?￠￠?Fe3+?￠￠üMg2+?￠￠YS?￠￠TI-?￠￠?H+??D￡???óD???ˉD?μ?ê?

A.￠ú￠?￠ü￠Y
B.￠?￠ü￠?
C.￠ù￠T
D.￠ú￠Y

????ìa  ?ú￠ùS2-?￠￠úFe2+?￠￠?Fe3+?￠￠üMg2+?￠￠YS?￠￠TI-?￠￠?H+??D￡???óD???ˉD?μ?ê?

A.￠ú￠?￠ü￠Y
B.￠?￠ü￠?
C.￠ù￠T
D.￠ú￠Y

±?ìa′e°?￡oB
±?ìa?a??￡o·???￡o?ù?Y???ê?ùo??a??μ??ˉo????D??￡?μ±?a??μ??ˉo???′|óú×?????ì?ê±￡???óD???ˉD?￡?μ±?a??μ??ˉo???′|óú×?μí??ì?ê±￡???óD?1?-D?￡?μ±?a??μ??ˉo???′|óú?D????ì?ê±￡??èóD???ˉD?ó?óD?1?-D?￡?ò?′??a′e??ìa￡?
?a′e￡o￠ùS2-?aSμ?×?μí??ì?￡???óD?1?-D?￡?1ê￠ù′í?ó￡?
￠úFe2+?aFeμ??D????ì?￡??èóD???ˉD?ó?óD?1?-D?￡?1ê￠ú′í?ó￡?
￠?Fe3+?aFe?a??μ?×?????ì?￡???óD???ˉD?￡?1ê￠??yè·￡?
￠üMg2+?aMg?a??μ?×?????ì?￡???óD???ˉD?￡?1ê￠ü?yè·￡?
￠YS?aSμ??D????ì?￡?S?èóD???ˉD?ó?óD?1?-D?￡?1ê￠Y′í?ó￡?
￠TI-?aIμ?×?μí??ì?￡??? óD?1?-D?￡?1ê￠T′í?ó￡?
￠?H+?aH?a??μ?×?????ì?￡???óD???ˉD?￡?1ê￠??yè·￡?
1ê??B￡?
μ??à￡o±?ìa??2é??òaμ????ˉ?á￡?ìa?????è2?′ó￡?±?ìa×￠òa′ó?ˉo???μ????è?D?????ê?é?ü??óDμ?D??ê￡?

±?ìa?ùê???μ?￡o?????ˉ?1?-?￠μ??ˉ?§μ???????
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