A、4Q<sub>Lsub>+2Q<sub>Ksub>=300 B、Q<sub>Lsub>+Q<sub>Ksub>=300 C、2Q<sub>Lsub>+4Q<sub>Ksub>=300 D、2Q<sub>Lsub>+Q<sub>Ksub>=300
A、4Q<sub>Lsub>+2Q<sub>Ksub>=300 B、Q<sub>Lsub>+Q<sub>Ksub>=300 C、2Q<sub>Lsub>+4Q<sub>Ksub>=300 D、2Q<sub>Lsub>+Q<sub>Ksub>=300
A、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> B、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>、C<sub>2sub>H<sub>2sub> C、CH<sub>4sub>、C<sub>2sub>H<sub>2sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> D、CO、CO<sub>2sub>、H<sub>2sub>、CH<sub>4sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>
A、CaCO<sub>3sub>+H<sub>3sub>PO<sub>4sub> B、Ca<sub>5sub>F(PO<sub>4sub>)<sub>3sub>+H<sub>2sub>SO<sub>4sub> C、CaF<sub>2sub>+H<sub>3sub>PO<sub>4sub> D、CaSO<sub>4sub>+H<sub>3sub>PO<sub>4sub>
A、(NH<sub>4sub>)Fe(SO<sub>4sub>)<sub>2sub> B、(NH<sub>4sub>)2Fe(SO<sub>4sub>)<sub>2sub> C、(NH<sub>4sub>)Fe(SO<sub>3sub>)<sub>2sub> D、(NH<sub>4sub>)2Fe(SO<sub>3sub>)<sub>2sub>
A、(NH<sub>4sub>)<sub>3sub>PO<sub>4sub> B、(NH<sub>4sub>)<sub>2sub>HPO<sub>4sub> C、NH<sub>4sub>H<sub>2sub>PO<sub>4sub>
A、AgNO<sub>3sub>,NH<sub>4sub>SCN,酸性, (NH<sub>4sub>)2Fe(SO<sub>4sub>)2 B、AgNO<sub>3sub>,NH<sub>4sub>SCN,中性,K<sub>2sub>CrO<sub>4sub> C、AgNO<sub>3sub>,KC<sub>lsub>, 酸性, K<sub>2sub>Cr<sub>2sub>O<sub>7sub> D、AgNO<sub>3sub>,NH<sub>4sub>SCN,碱性, (NH<sub>4sub>)2Fe(SO<sub>4sub>)2
A、c(FeSO<sub>4sub>)=c(H<sub>2sub>C<sub>2sub>O<sub>4sub>) B、3c(FeSO<sub>4sub>)=c(H<sub>2sub>C<sub>2sub>O<sub>4sub>) C、2c(FeSO<sub>4sub>)=c(H<sub>2sub>C<sub>2sub>O<sub>4sub>) D、c(FeSO<sub>4sub>)=2c(H<sub>2sub>C<sub>2sub>O<sub>4sub>)
A、CO、H<sub>2sub>、CH<sub>4sub>、N<sub>2sub> B、Ar<sub>2sub>、CH<sub>4sub>、N<sub>2sub>、H<sub>2sub>、NH<sub>3sub> C、NH<sub>3sub>、CH<sub>4sub>、N<sub>2sub>、CO<sub>2sub> D、H<sub>2sub>O、N<sub>2sub>、H<sub>2sub>、CH<sub>4sub>
A、对任意实数,都有p<sub>1sub>=p<sub>2sub> B、对任意实数,都有p<sub>1sub>
sub>2 C、对任意实数,都有p<sub>1sub>>p<sub>2sub> D、对任意实数,都有p<sub>1sub>≠p<sub>2sub>
sub>
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