Elv maintenance groups: responsible for the elv work, including fire alarm system, broadcasting system, emergency lighting system, monitoring systems, access control, conference room av system, etc.

弱电维修组：负责全厂弱电工作，包括火灾报警系统，广播系统，应急照明系统，监控系统，门禁系统，会议室影音系统等。

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Describes the composition and running modes of the smoke control and exhaust system, including the fire ventilation system at stations and in the tunnel, and the fire alarm and device control system.

简述了地下铁道防排烟系统的组成及其运行方式，包括车站及区间隧道火灾事故通风系统，火灾报警与设备监控系统。

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