單項(xiàng)選擇題充油電力設(shè)備在注油后應(yīng)有足夠的靜置時(shí)間才可進(jìn)行耐壓試驗(yàn)。靜置時(shí)間如無制造廠規(guī)定,額定電壓750kV的設(shè)備應(yīng)大于()

A.48h
B.72h
C.96h
D.120h


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