单选题:某220kV变电站内设有两台主变压器,变压器铁芯为冷轧硅钢片,过电压一般不超过下列哪个数值时,可不采取保护措施?( ) 题目分类:发输变电专业知识 题目类型:单选题 查看权限:VIP 题目内容: 某220kV变电站内设有两台主变压器,变压器铁芯为冷轧硅钢片,过电压一般不超过下列哪个数值时,可不采取保护措施?( ) A.411.5kV B.291.0kV C.617.3kV D.436.5kV 参考答案: 答案解析:
Please put Mary' s things back where you found them ________ Please put Mary' s things back where you found them __________ she won' t know 分类:发输变电专业知识 题型:单选题 查看答案
What is the best title for the passage? What is the best title for the passage?A.Unforgettable Experiences B.Remarkable 分类:发输变电专业知识 题型:单选题 查看答案
--Tommy, do you know if Frank __________ to the theatre with --Tommy, do you know if Frank __________ to the theatre with us this Sunday if i 分类:发输变电专业知识 题型:单选题 查看答案
如上图所示,35kV配电室墙无突出物,手车开关柜的深度为2800mm,则35kV配电室室内最小净宽为下列哪一项?( ) 如上图所示,35kV配电室墙无突出物,手车开关柜的深度为2800mm,则35kV配电室室内最小净宽为下列哪一项?( )A.4700mm+双车长 B.4800mm 分类:发输变电专业知识 题型:单选题 查看答案