【单选题】
为保证火灾事故工况下排烟的有效、快速实现，城市轨道交通地下车站的站厅、站台和设备及管理用房应划分防烟分区，且防烟分区不应跨越___
A. 防鼠分区
B. 防洪分区
C. 防火分区
D. 车站出口
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答案
C
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