单项选择题
A.65Ω±3.25Ω B.65Ω±5Ω C.85Ω±5Ω D.85Ω±8.5Ω
A.170±2 B.170±4 C.165±2 D.165±4
A.0.5 B.0.55 C.0.6 D.0.65