A、浓HCl B、浓H<sub>2sub>SO<sub>4sub> C、浓HNO<sub>3sub>
A、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> B、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>、C<sub>2sub>H<sub>2sub> C、CH<sub>4sub>、C<sub>2sub>H<sub>2sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> D、CO、CO<sub>2sub>、H<sub>2sub>、CH<sub>4sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>
A、血细胞中的KHCO<sub>3sub> B、血浆中的Na<sub>2sub>HPO<sub>4sub> C、血浆中的NaHCO<sub>3sub> D、血浆中的K<sub>2sub>HPO<sub>4sub>
A、〔Cd(CN)<sub>4sub>〕2-〔PtCl<sub>4sub>〕2- B、〔Ni(CN)<sub>4sub>〕2-〔Cu(NH<sub>3sub>)<sub>4sub>〕2+ C、〔Zn(CN)<sub>4sub>〕2-〔PtCl<sub>4sub>〕2- D、〔PtCl<sub>6sub>〕2-〔FeCl<sub>4sub>〕-
A、CH<sub>4sub>+2S<sub>2sub>→CS<sub>2sub>+H<sub>2sub>S B、CH<sub>4sub>+2S<sub>2sub>→CS<sub>2sub>+2H<sub>2sub>S C、CH<sub>4sub>+S<sub>2sub>→CS<sub>2sub>+2H<sub>2sub> D、CH<sub>4sub>+3S<sub>2sub>→CS<sub>2sub>+4H<sub>2sub>S
A、CuSO<sub>4sub> B、K<sub>2sub>SO<sub>4sub> C、Al<sub>2sub>(SO<sub>4sub>)3 D、KAl(SO<sub>4sub>)<sub>2sub>
A、H<sub>2sub>C<sub>2sub>O<sub>4sub> B、稀H<sub>2sub>SO<sub>4sub> C、H<sub>2sub>CO<sub>3sub> D、H<sub>3sub>PO<sub>4sub>
A、PbO<sub>2sub>变成PbSO<sub>4sub> B、PbSO<sub>4sub>变成PbO<sub>2sub> C、Pb都变成PbSO<sub>4sub> D、PbSO<sub>4sub>变成Pb
A、Na<sub>2sub>SO<sub>4sub>、BaCl<sub>2sub>、NaOH B、Na<sub>2sub>SO<sub>4sub>、CuCl<sub>2sub>、HNO<sub>3sub> C、Na<sub>2sub>SO<sub>4sub>、CuCl<sub>2sub>、NaOH D、Na<sub>2sub>CO<sub>3sub>、CuSO<sub4sub>、H<sub>2sub>SO<sub>4sub>sub4sub>