A.非值班員 B.任何人 C.非領(lǐng)導(dǎo)人員 D.領(lǐng)導(dǎo)
A.同相位 B.超前30° C.滯后30° D.滯后120°
A.支路數(shù)大于節(jié)點(diǎn)數(shù) B.支路數(shù)小于節(jié)點(diǎn)數(shù) C.支路數(shù)等于節(jié)點(diǎn)數(shù) D.支路數(shù)大于網(wǎng)孔數(shù)