p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px SimSun; color: #000000} 下列各组酸碱物质中,哪些是共轭酸碱对? A. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Lucida Grande'; color: #000000}span.s1 {font: 12.0px 'Hiragino Kaku Gothic ProN'} OH- － H3O+ B. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Lucida Grande'; color: #000000}span.s1 {font: 12.0px 'Hiragino Kaku Gothic ProN'} H2SO4 － SO42- C. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Lucida Grande'; color: #000000} Na2CO3—CO32- D. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Lucida Grande'; color: #000000}span.s1 {font: 12.0px 'Hiragino Kaku Gothic ProN'} C2H5OH － C2H5OH2+ E. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Lucida Grande'; color: #000000}span.s1 {font: 12.0px 'Hiragino Kaku Gothic ProN'} NH3 － NH4+