高频保护用的阻波器是一次设备，不在继电保护装置的评价范围内，对不对？
参考答案：
错。应在评价范围内。
_________professional violinist practices for several hours a day, but__________ violinist has his own way of playing the Beethoven concert．
A．Each, every
B．Every, each
C．One, a
D．All, each
