对于励磁调节器来说，若给定电压丢失，将造成励磁装置（）。
A.过励
B.失磁
C.无功摆动
参考答案：B
_____ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.
A．Put
B．Putting
C．Having put
D．Being put
处方中"每日3次"的缩写词是（）
A.B.i.D.
B.q.i.D.
C.i.D.
D.q，D.
E.t.i.D.
