正方向不对称故障时,对以没有记忆作用的正序电压为极化量的动作方程式相间方向阻抗器,稳态阻抗特性圆不包括原点,对称性故障恰好通过原点
参考答案:错
解析:
知识点:元件保护
Generally speaking, the media can often help solve problems and draw attention to the cases
__________ help is needed. [ ]
A. where
B. when
C. which
D. that
某高速公路路堤填筑到上路床,要求填料的最大粒径不宜超过()
A.10Cm
B.15Cm
C.20Cm
D.30Cm