When looking at the ANSI/ASHRAE Standard 34-201, flammability can be recognized through the:
A) Numbers 4-6. B) Numbers 1-3. C) Letter B. D) Letter A.
B
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Many hot water systems eliminate the need for storage tanks by using _____.
a. backflow preventers b. tankless heaters c. water softeners d. recirculating pumps
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Technician A says that voltage is usually indicated on the horizontal display axis. Technician B says that time is usually indicated on the horizontal display axis. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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What level of DBA is considered the maximum limit of continuous exposure over eight hour days without protection?