单项选择题
A.高压端子上B.低压端子上C.中性点处D.地处
A.颗粒边界空隙B.四联点C.亚颗粒边界D.核幔构造
A.KT1-60S;KT2-70S;KT3-0.5SB.KT1-0.5S;KT2-60S;KT3-70SC.KT1-60S;KT2-0.5S;KT3-70SD.KT1-60S;KT2-65S;KT3-70S
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