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、CO<sub>2sub>+H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O B、CO<sub>2sub>+2S→CS<sub>2sub>+O<sub>2sub> C、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+H<sub>2sub>O D、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O
A、CS<sub>2sub>+H<sub>2sub>O→COS+H<sub>2sub>S B、CS<sub>2sub>+2H<sub>2sub>O→CO<sub>2sub>+2H<sub>2sub>S C、CS<sub>2sub>+H<sub>2sub>O→CO+H<sub>2sub>S D、2CS<sub>2sub>+H<sub>2sub>O→2COS+<sub>2sub>