A、CaCO<sub>3sub> B、BaCO<sub>3sub> C、KCO<sub>3sub> D、NaCO<sub>3sub>
A、Ca(OH)<sub>2sub>和CaCO<sub>3sub> B、CaO和CaCO<sub>3sub> C、CaO和Ca(OH)<sub>2sub> D、Ca(OH)<sub>2sub>和CaO
A、CaS0<sub>4sub>;Mg(HC0<sub>3sub>)2 B、Ca(HC0<sub>3sub>)2;MgS0<sub>4sub> C、CaS0<sub>4sub>;MgS0<sub>4sub> D、Ca(HC0<sub>3sub>)2;Mg(HC0<sub>3sub>)2