单项选择题
A.398Ω,1.074×10-3/km B.398∠-5°Ω,1.074×10-3∠84.2°/km C.199Ω,22.5×10-3/km D.1.074∠-9.4°Ω,39.8∠94.6°/km
A.0.6 B.10-4 C.1.0 D.2.4
A.79.6 B.9.82 C.16.67 D.29.92