多项选择题

在220kV无人值班变电站的照明种类一般可分为下列哪几类？（ ）

A.正常照明
B.应急照明
C.警卫照明
D.障碍照明
<上一题 目录 下一题>
热门 试题

多项选择题
某地区电网计划新建一座220kV变电站，安装3台180MVA、220 110 10kV主变压器，变压器高、中、低压侧的容量分别为额定容量的100%、100%、30%。下列哪些措施可限制变电站10kV母线侧短路电流？（ ）
A.将主变压器低压侧容量改为50%
B.提高变压器的阻抗值
C.变压器220、110侧中性点不接地
D.10kV母线分段运行
未分类题
It can be inferred from the passage that ______.A.John and Paul were more talented and made greater contribution to the success of the bandB.John and Paul sang their own songs because they didn't like each other's styleC.George and Ringo never composed or sang their own songsD.The Beatles maintained so much popularity with their works that no other recording or writing group could compare
A.A.John
B.John
C.George
D.The
相关试题