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1?????????仯???????????
A?????????? B???????м??? C??ú????? D????????????
2?????????????????????
A?????? B??????? C????? D???????????
3??????2?????????????????
A??2Cl B??Cl2 C??ZnCl2 D??2HCl
4????????????????????2X+3O2 2SO2+2H2O????X??????????????
A??S B??HS C??H2S D??H2SO4
5??????????????????У???????????????????????????е???????????????????????У?????????????????????
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A??????? B???????? C??????? D???????? |