下列哪些新闻属于非事件新闻（）。 ["典型报道","深度报道","经验性报道","述评性新闻"]
Ignition failure in an automatically controlled auxiliary boiler could be caused by（） ["carbon deposits on the flame scanner","high fuel oil temperature","low fuel oil viscosity","high steam pressure"]
可能造成监控系统发出“线路保护装置告警”信号的原因有哪些？
线路保护动作开关跳闸，调控值班员应迅速查看记录哪些内容？
Heavy soot accumulations in an auxiliary boiler could be caused by（） ["water in the fuel oil","excessive cycling","high fuel oil pressure","improper burner maintenance"]
可能造成监控系统发出“断路器控制回路断线”信号的原因有哪些？
