A.0.01 B.0.02 C.0.03 D.0.04
A.指向儲(chǔ)油柜 B.指向左邊 C.指向右邊 D.指向變壓器本體
A.0.5%~1% B.1%~1.5% C.1.5%~2% D.2%~3%