A、0.3mm~1.7mm B、0.5mm~1.7mm C、0.3mm~2mm D、1mm~3mm
A.4Ω~4.3Ω B.4.12Ω~4.6Ω C.4.12Ω~4.74Ω D.4.12Ω~4.85Ω
A.2.1V B.5.6V C.13V D.13.6V