![](https://lstatic.shangxueba.com/jiandati/pc/images/pc_jdt_tittleico.png)
提问人:网友文旻昊
发布时间:2023-07-08
![](https://lstatic.shangxueba.com/jiandati/pc/images/logo2.png)
![煤与瓦斯突出矿井应建设采区避难硐室。突出煤层的掘进道长度及采煤工作面推进长度超过500m时,应在距离工作面()范围内,建设临时避难硐室或设置可移动式救生舱。](https://img2.soutiyun.com/shangxueba/askcard/2023-07/8/1427/20230708192816267.jpg)
[单选题]
煤与瓦斯突出矿井应建设采区避难硐室。突出煤层的掘进道长度及采煤工作面推进长度超过500m时,应在距离工作面()范围内,建设临时避难硐室或设置可移动式救生舱。
A.50m
B.100m
C.300m
D.500m
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_ckda.png)
A.50m
B.100m
C.300m
D.500m
A.50m
B.100m
C.300m
D.500m
A.50m
B.100m
C.300m
D.500m
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!