发生金属性相间短路时,电源侧保护安装点距离故障点越近,负序电压越高。
参考答案:对
解析:
专业类型:继电保护
设备类型:线路
难度等级:中等
电压等级:220kV
知识点:基础知识
I wonder ______, Mr.Smith. We're looking for him everywhere. [ ]
A. where has your son been
B. where your son has been
C. where have you gone
D. where your son has gone
患者,男,48岁。因头晕、走路不稳入院,影像学检查如下图。
该病最常见的临床表现是()
A.癫痫
B.头痛、呕吐
C.内分泌失调
D.性早熟
E.智力发育迟缓
F.以上都是