下列常用检查三相变压器的连接组别的试验方法中，错误的是（）。
A.直流法
B.双电压表法
C.电桥法
D.相位法
参考答案：C
— Hello, __________?
— Hello, this is Lingling speaking.
A．who is that over there
B．who is it
C．who’s that speaking
D．who are you
The nurse is assessing a client with possible osteoarthritis. The most significant risk factor for osteoarthritis is （）.
A．congenital deformity.
B．age.
C．trauma.
D．obesity.
