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【单选题】
一台单相双绕组变压器的额定容量为10kVA,额定电压为220/110V,今若改接为330/220V的自耦变压器,该自耦变压器的额定容量应为:( )A.
60kVA
B.
30kVA
C.
20kVA
D.
10kVA
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