在110kv及以上的大电流接地系统中，在任何一点发生（）短路，系统都会出现零序分量即零序电流和（）电压。
参考答案：单相接地、零序
While we are busy living our dreams, our children are busy growing up, the people we love are moving away and dying, our bodies are getting _________, and our dreams are slipping away.
A．out of date
B．out of control
C．out of touch
D．out of shape
简述图形视觉感受的基本过程。
