A、CaO B、SiO<sub>2sub> C、Fe<sub>2sub>O<sub>3sub>
A、H<sub>2sub>O B、HCL C、FeCl<sub>2sub> D、Fe<sub>2sub>O<sub>3sub>
A、Fe≤±0.05%,S≤±0.01% B、S≤±0.01%,P≤±0.01% C、SiO<sub>2sub>≤±0.4%,CaO≤±0.2% D、Fe≤±0.05%,SiO<sub>2sub>≤±0.03%
A、CaO、SiO<sub>2sub>、Al<sub>2sub>O<sub>3sub>、Fe<sub>2sub>O<sub>3sub> B、CaO、SiO<sub>2sub>、Al<sub>2sub>O<sub>3sub>、MgO C、f-CaO、SiO<sub>2sub>、Al<sub>2sub>O<sub>3sub>、Fe<sub>2sub>O<sub>3sub>
A、 Fe<sub>2sub>O<sub>3sub> B、 FeO C、 MgO
A、CaO B、AL<sub>2sub>O<sub>3sub> C、SiO<sub>2sub> D、Fe<sub>2sub>O<sub>3sub>
A、Ag<sub>2sub>O(s) = 2Ag(s) + 1/2O<sub>2sub>(g) B、N<sub>2sub>O<sub>4sub>(g) = 2NO<sub>2sub>(g) C、Fe<sub>2sub>O<sub>3sub>(s) +3/2C(s) = 2Fe(s) +1/2CO<sub>2sub>(g) D、6C(s) + 6H<sub>2sub>O(g) = C<sub>6sub>H<sub>12sub>O<sub>6sub>(s)
A、FeS B、Fe<sub>2sub>O<sub>3sub> C、Fe<sub>3sub>O4 D、Fe<sub>2sub>S<sub>3sub>
A、CH<sub>4sub>、H<sub>2sub>; B、CO<sub>2sub>、CH<sub>4sub>; C、CO<sub>2sub>、H<sub>2sub>S; D、CH<sub>4sub>、H<sub>2sub>S。