A. 柴油發(fā)電站供電 B. 移動(dòng)式發(fā)電機(jī)供電 C. 永久電網(wǎng)供電 D. 臨時(shí)電網(wǎng)供電
A.15m B.25m C.10m D.35m
A.30%~40% B.50%~60% C.60%~70% D.70%~80%