矿井高压电网，必须采取措施限制单相接地电容电流使其不超过多大？
参考答案：
20安。
—I think math is more useful than
—I don't _________ you. They are both useful. [ ]
A. get on with
B. catch up with
C. talk with
D. agree with
A．副线圈中电压表的读数为55V
B．副线圈中输出交流电的周期为0.01s
C．原线圈中电流表的读数为0.5A
D．原线圈中的输入功率为110W
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