【判断题】【消耗次数：1】
在低三相四线供电系统中，按规程规定变压器中性允许长期通过的电流，不应超过变压器二次侧额定电流的25％。
①
正确
②
错误
参考答案：
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三相变压器组的一次、二次绕组均采用[填空]连接。
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