Audible alarm indicators, for commercial spaces, must output a minimum level of _____dB at 10ft. and be _______dB greater than the ambient noise level.
A. 60dB, 6dB
B. 60dB, 15dB
C. 75dB, 15dB
D. 85dB, 15dB
C. 75dB, 15dB
Trades & Technology
You might also like to view...
The ideal soil for a water garden is ____________________
Fill in the blank(s) with correct word
Trades & Technology
For a series circuit with a fixed voltage source, what happens to the current when the resistance is decreased?
What will be an ideal response?
Trades & Technology
Nutrient requirement for fetal growth is greatest during which trimester of pregnancy?
A. Middle B. Last C. First D. There is no difference during any trimester
Trades & Technology
The amount at which the ____________________ variable is changed by the final control element affects the condition ____________________ variable.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology