![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
当距基准面高度大于等于2m并小于20m的平台、通道及作业场所的防护栏杆高度应不低于()
A.1050mm
B.900mm
C.1200mm
D.1500mm
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.1050mm
B.900mm
C.1200mm
D.1500mm
A.800
B.900
C.1000
D.1100
A、1m
B、2m
C、3m
A、坠落高度基准面0.5m及以上进行临边作业时
B、坠落高度基准面1m及以上进行临边作业时
C、坠落高度基准面1.5m及以上进行临边作业时
D、坠落高度基准面2m及以上进行临边作业时
A.1.5m
B.2m
C.2.5m
D.3m
A.0.9
B.1.2
C.1
D.1.8