A.10kN·m
B.20kN·m
C.40kN·m
D.80kN·m
[单选题]A.B.1:2:4C.2:2:1D.1:1:2
[单选题]A.B.1:2:4C.2:2:1D.1:1:2
[单选题]A.R=16.8Ω,L=0.15HB.C.R=8.4Ω,L=0.15HD.R=13.53Ω,L=0.15H
[单选题]A.R=16.8Ω,L=0.15HB.C.R=8.4Ω,L=0.15HD.R=13.53Ω,L=0.15H
[单选题]A.1.95B.1.75C.1.65D.1.45