题目内容
当3个相角差互为120°的交流电源接入同一台具有3个不同磁路铁芯的变压器时，其中两相的电压、电流或磁通的和等于另一相的值，且大小相等、方向相同、处于平衡状态，使三相交流电能维持有效的能量供给。( )
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骨肉瘤（）
对线路工作来说，对大接地短路电流系统、同杆架设线路和两相线加一接地线同杆架设线路，当某一回路停电时，其他回路一般应同时停电。( )
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