问题
单项选择题
地下车站及其相连的地下区间、长度大于（）m的出入口通道、长度大于（）m的独立地下区间应设室内消火栓给水系统。
A.20，500
B.30，500
C.40，600
D.500，600
答案
参考答案：A
解析：地下车站及其相连的地下区间、长度大于20m的出入口通道、长度大于500m的独立地下区间应设室内消火栓给水系统。所以，根据题意，正确答案为A。
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地下车站及其相连的地下区间、长度大于（）m的出入口通道、长度大于（）m的独立地下区间应设室内消火栓给水系统。
A.20，500
B.30，500
C.40，600
D.500，600
参考答案：A
解析：地下车站及其相连的地下区间、长度大于20m的出入口通道、长度大于500m的独立地下区间应设室内消火栓给水系统。所以，根据题意，正确答案为A。
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