单项选择题
A.HF和HI B.HBr和HI C.HF、HBr和HI D.HF和HBr
A.HBr B.HF C.HCl D.HI
A.浓HCl B.纯HAc C.浓H2SO4 D.浓H3PO4
A.0.261% B.0.163% C.0.131% D.0.098%
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