A、CH<sub>4sub><1% B、CH<sub>4sub><1.5% C、CH<sub>4sub>≤0.5% D、CH<sub>4sub>≤1%
A、CH<sub>4sub> B、(CH<sub>3sub>)<sub>4sub>C C、(CH3)<sub>2sub>CHCH<sub>3sub> D、CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>CH<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。
A、CH<sub>4sub><1%,CO<sub>2sub><1% B、CH<sub>4sub>≤1%,CO<sub>2sub>≤1% C、CH<sub>4sub>≤1%,CO<sub>2sub>≤1.5% D、CH<sub>4sub>≤1.5%,CO<sub>2sub>≤0.5%
A、CH<sub>2sub>=CH(CH<sub>2sub>)<sub>4sub>Cl B、CH<sub>3sub>(CH<sub>2sub>)<sub>4sub>Cl C、C<sub>6sub>H<sub>5sub>-CH<sub>2sub>CH<sub>2sub>Cl D、C<sub>6sub>H<sub>5sub>-Cl
A、NH<sub>3sub>>H<sub>2sub>O>CH<sub>4sub> B、H<sub>2sub>O>NH<sub>3sub>>CH<sub>4sub> C、H<sub>2sub>O>CH<sub>4sub>>NH<sub>3sub> D、CH<sub>4sub>>NH<sub>3sub>>H<sub>2sub>O