單項選擇題
A.30m B.45m C.60m D.75m
A.2 B.4 C.6 D.10
A.2 B.4 C.5 D.6
A.8 B.10 C.12 D.16
A.3 B.5 C.10 D.12.5
A.最大可持續(xù)運行電壓 B.電壓保護水平 C.沖擊電壓 D.沖擊電流
A.12m B.18m C.25m D.30m
A.1 B.4 C.5 D.10
A.0.5mm B.0.6mm C.0.7mm D.0.8mm