单项选择题
A.1 B.11/4 C.11/2 D.2
A.Kq.Ky B.Kw C.Ky D.Kq
A.KqKy B.Kw C.Ky D.Kq
A.连接组别 B.短路电压 C.空载电流 D.短路电流
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