A、(CH<sub>3sub>)<sub>3sub>CCO<sub>2sub>C<sub>2sub>H<sub>5sub> B、(CH<sub>3sub>)<sub>2sub>CHCO<sub>2sub>C<sub>2sub>H<sub>5sub> C、CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>CO<sub>2sub>C<sub>2sub>H<sub>5sub> D、CH<sub>3sub>CO<sub>2sub>C<sub>2sub>H<sub>5sub>
A、(CH<sub>3sub>)<sub>3sub>CCO<sub>2sub>C<sub>2sub>H<sub>5sub> B、(CH<sub>3sub>)<sub>2sub>CHCO<sub>2sub>C<sub>2sub>H<sub>5sub> C、CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>CO<sub>2sub>C<sub>2sub>H<sub>5sub> D、CH<sub>3sub>CO<sub>2sub>C<sub>2sub>H<sub>5sub>
A、CH<sub>3sub>NH<sub>2sub>〉NH<sub>3sub>〉C<sub>6sub>H<sub>5sub>NHCH<sub>3sub> B、CH<sub>3sub>NH<sub>2sub>〉C<sub>6sub>H<sub>5sub>NHCH<sub>3sub>〉NH<sub>3sub> C、C<sub>6sub>H<sub>5sub>NHCH<sub>3sub>〉NH<sub>3sub>〉CH<sub>3sub>NH<sub>2sub> D、NH<sub>3sub>〉CH<sub>3sub>NH<sub>2sub>〉C<sub>6sub>H<sub>5sub>NHCH<sub>3sub>
A、C<sub>2sub>H<sub>5sub>OH B、C<sub>5sub>H<sub>6sub>OCH<sub>3sub> C、C<sub>2sub>H<sub>5sub>OCH<sub>3sub> D、C<sub>5sub>H<sub>6sub>OH
A、C<sub>5sub>H<sub>10sub>O<sub>2sub> B、C<sub>5sub>H<sub>12sub>NO C、C<sub>6sub>H<sub>14sub>O D、C<sub>5sub>H<sub>14sub>N<sub>2sub>
A、C<sub>6sub>H<sub>5sub>Cl B、C<sub>2sub>H<sub>5sub>Cl C、CH<sub>2sub>=CHCl D、C<sub>6sub>H<sub>5sub>CH<sub>2sub>Cl
A、HO[-OC(CH<sub>2sub>)<sub>5sub>NHOC(CH<sub>2sub>)5NH-]<sub>nsub>H; B、H[-NHOC(CH<sub>2sub>)5-]<sub>nsub> NH<sub>2sub>; C、HO[-OC(CH<sub>2sub>)<sub>5sub>NH-]<sub>nsub> H; D、H[-OOC(CH<sub>2sub>)<sub>5sub>NH-]<sub>nsub> H
A、11I<sub>m1sub>-3I<sub>m2sub>=5 B、11I<sub>m1sub>+3I<sub>m2sub>=5 C、11I<sub>m1sub>+3I<sub>m2sub>=-5 D、11I<sub>m1sub>-3I<sub>m2sub>=-5
A、I<sub>1sub>-I<sub>2sub>-I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0 B、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub>-I<sub>5sub>=0 C、I<sub>1sub>-I<sub>2sub>+ I<sub>3sub> + I<sub>4sub> +I<sub>5sub>=0 D、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0
A、(C<sub>6sub>H<sub>5sub>)<sub>-sub>N=N<sub>-sub>(C<sub>6sub>H<sub>5sub>) B、C<sub>6sub>H<sub>5-sub>N≡N+HSO<sub>4-sub> C、(CH<sub>3sub>)<sub>2sub>NH<sub>2sub>+Cl- D、(CH<sub>3sub>)<sub>4sub>N+Cl-
A、V<sub>2sub>O<sub>3sub>、TiO<sub>5sub> B、V<sub>2sub>O<sub>5sub>、TiO<sub>2sub> C、AgO D、P<sub>2sub>O<sub>5sub>、TiO<sub>2sub>