A.1% B.2% C.5% D.10%
A.最大負(fù)荷 B.平均負(fù)荷 C.最小負(fù)荷 D.隨機(jī)負(fù)荷
A.PQ節(jié)點(diǎn) B.Vθ節(jié)點(diǎn) C.PV節(jié)點(diǎn) D.QV節(jié)點(diǎn)