题目内容：
楼梯栏杆的高度一般为（）mm。
参考答案：
填空题：楼梯栏杆的高度一般为（）mm。
- 题目分类：智能楼宇管理师考试
- 题目类型：填空题
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110kV及以下线路保护测控装置的线路电压报警为：当重合闸方式为检无压或不检时，并且线路有流而无压，瞬时报线路电压异常。（）A．正确B．错误
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