A、V<sub>Csub> B、V<sub>B1sub> C、V<sub>Asub> D、V<sub>Dsub> E、V<sub>Esub>
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>
A、V<sub>1sub>与V<sub>4sub>导通,V<sub>2sub>与V<sub>3sub>关断 B、V<sub>1sub>常通,V<sub>2sub>常断,V<sub>3sub>与V<sub>4sub>交替通断 C、V<sub>1sub>与V<sub>4sub>关断,V<sub>2sub>与V<sub>3sub>导通 D、V<sub>1sub>常断,V<sub>2sub>常通,V<sub>3sub>与V<sub>4sub>交替通断
A、V<sub>1sub>与V<sub>4sub>导通,V<sub>2sub>与V<sub>3sub>关断 B、V<sub>1sub>常通,V<sub>2sub>常断,V<sub>3sub>与V<sub>4sub>交替通断 C、V<sub>1sub>与V<sub>4sub>关断,V<sub>2sub>与V<sub>3sub>导通 D、V<sub>1sub>常断,V<sub>2sub>常通,V<sub>3sub>与V<sub>4sub>交替通断
A、V<sub>1sub>=V<sub>2sub>-V<sub>3sub>+V<sub>4sub> B、V<sub>2sub>=V<sub>1sub>-V<sub>3sub>+V<sub>4sub> C、V<sub>1sub>=V<sub>3sub>-V<sub>2sub>+V<sub>4sub> D、V<sub>1sub>=V<sub>3sub>-V<sub>4sub>+V<sub>2sub>