A.5 B.10 C.15 D.30
A.96.70% B.90% C.10% D.45%
A.負(fù)荷預(yù)測(cè) B.網(wǎng)絡(luò)拓?fù)?br /> C.檢修計(jì)劃 D.交換計(jì)劃