DC busses powered from the battery following a loss of both generators are:
A.A.Battery bus, DC Standby bus, Hot battery bus
B.B.DC standby Bus, Hot Battery Bus & Switched hot battery bus
C.C.Battery bus, DC Standby bus, Hot battery bus & Switched hot battery bus (even when the battery switch is OFF)
D.D.Battery bus, DC Standby bus, Hot battery bus & Switched hot battery bus
正确答案是D