对母线充电时,下列哪种措施不能消除谐振()?
A.先将线路接入母线
B.先将变压器中性点及消弧线圈接地
C.在母线电压互感器二次侧开口三角并接消谐电阻
D.用刀闸进行操作
参考答案:D
在Rt△ABC中,斜边AB的长为2,则△ABC的面积的最大值为______.
________ was the idea _______ the wife thought of
A.What...that
B.That...what
C.How...why
D.Why...how