[单选题,1.3分] Don’t go to _____ places where there is

[单选题,1.3分] Don’t go to _____ places where there is no fresh air.A.suchB.soC.thos

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[填空题,10分] 三相负载对称的条件是:各相负载的阻抗相等,()也相等

[填空题,10分] 三相负载对称的条件是:各相负载的阻抗相等,()也相等

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