When there is a low-hazard risk of back siphonage in hoses attached to a photograph-developing sink or a dairy barn, some codes require the installation of a _____.
a. dual-check valve backflow preventer
b. hose-connection vacuum breaker
c. backflow preventer with intermediate atmospheric vents
d. double-check valve assembly
b. hose-connection vacuum breaker
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An 802.11N AP employs MIMO. What is its role in enhancing the performance?
What will be an ideal response?
The first thing to check when there is a complaint of too much humidity is the _____.
a. water supply line b. input rate of the furnace c. humidistat setting d. capacity of the humidifier
Low pressure chillers use either air- or water-cooled condensers.
Answer the following statement true (T) or false (F)
Technician A says that a 3 x 5 card should be held against the oil fill opening if the PCV system is operating correctly. Technician B says that if a PCV valve rattles, it definitely is good. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician