电压互感器的一次侧隔离断开后，其二次回路应有防止电压反馈的措施。
参考答案：对
Mary worked here as a ______secretary and I ended up getting a full-job with the company.
A．pessimistic
B．temporary
C．previous
D．cautious
结核复发用药（）
A.INH
B.PZA
C.SM
D.EMB
E.左氧氟沙星
