单项选择题
A.Ip=17.3A B.Ipp=34.6A C.Ip=20A D.Ip=10A
A.UB=0V、Uc=2.3V、UE=1V B.UB=0.7V、UC=6V、UE=0V C.UB=0V、Uc=5V、UE=6V D.UB=5V、Uc=5V、UE=5V