电气设备发生火灾的主要原因有（）A、电路短路B、电路过载C、电

搜题请搜索小程序“爱下问搜题”

问题多项选择题

电气设备发生火灾的主要原因有（）

A、电路短路

B、电路过载

C、电路接触电阻增大

D、电路发生电火花和电孤

E、操作失误

F、无可靠的防火措施

答案

参考答案：A, B, C, D

选择题

Out of the crowded bus , who was dressed in a black suit and waved to a woman. [ ]

A. a tall man in his thirties stepped

B. stepped a tall man in his thirties

C. did a tall man in his thirties step

D. did a tall man step in his thirties

单项选择题

（）负责组织变压器（高压电抗器）非电量保护验收工作。

A.生产技术部

B.电力调度中心

C.继电保护所

D.修试所