问题
单项选择题
《建筑消防安全检测评价技术规程》规定，火灾自动报警系统的布线当采用金属软管时，其长度不应大于（）m
A.1
B.2
C.3
D.4
答案
参考答案：B
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《建筑消防安全检测评价技术规程》规定，火灾自动报警系统的布线当采用金属软管时，其长度不应大于（）m
A.1
B.2
C.3
D.4
参考答案：B
| 完形填空。 | |||
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