Some spaces protected by fixed carbon dioxide systems are required to have audible alarms that begin sounding prior to the discharge of CO2. This time delay must be at least __________.
A
20 seconds
B
40 seconds
C
one minute
D
two minutes
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Question 1 / 2066636eec28f7522a1c51cd63
Question 1 of 2066636eec28f7522a1c51cd63
Some spaces protected by fixed carbon dioxide systems are required to have audible alarms that begin sounding prior to the discharge of CO2. This time delay must be at least __________.
Some spaces protected by fixed carbon dioxide systems are required to have audible alarms that begin sounding prior to the discharge of CO2. This time delay must be at least __________.