对于Y。/Y。/△接线的自耦变压器,零序差动保护取用的零序电流是高压侧零序电流,中压侧零序电流和接地中性线中的零序电流
参考答案:错
解析:
知识点:元件保护
_____ is often the Case with the old, my grandmother is into talking about good old days. [ ]
A. When
B. As
C. That
D. Which
面向对象的模型中,最基本的概念是对象和()。