配電檢修工單項(xiàng)選擇題每日一練(2019.10.13)

A.熱擊穿
B.熱游離
C.電游離
D.電擊穿

A.拉長(zhǎng)電弧
B.冷卻電弧
C.吹動(dòng)電弧

A.1875mm
B.2375mm
C.2425mm
D.2725mm

A.切換開(kāi)關(guān)
B.選擇開(kāi)關(guān)
C.范圍開(kāi)關(guān)

A.50mm
B.75mm
C.100mm
D.125mm