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Security
12 天
Fire Alarm 411: A Fire Alarm System Installation, Part 1
A manual fire alarm system consists of notification appliances throughout, activated by manual pull stations at every exit ...
BBC
17 天
Plan to change how fire service responds to alarms
Chief fire officer Gavin Ellis said the plans could help the service focus on "genuine emergencies" Devon and Somerset Fire and Rescue Service is considering no longer attending some automatic ...
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今日热点
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US inflation ticked higher
Jan. 6 prosecutors fired
Venezuela frees 6 Americans
Hamas releases 3 hostages
Suspends dividend
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