Technician A says that the lubricating system forms a seal between the piston rings and cylinder walls. Technician B says the lubricating system helps cool engine parts. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
C
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Because a semiconductor material can operate as both a conductor and an insulator, it is very useful as a ____ device.
A. switching B. load bearing C. storage D. resistive
The metabolic rate of the fish, its activity, its food consumption, and its oxygen demand
are directly related to water temperature. A. True B. False
One advantage of rooftop units on small commercial buildings is that:
A) They are easier to service than systems located inside the building. B) They operate more efficiently than systems located inside the building. C) They offer a substantial savings of space within the building. D) They are available in larger capacities than central station systems.
How can dehumidification reduce the required capacity of a mechanical cooling system?
A) by allowing the cooling system to be sized to meet just the sensible cooling load B) by allowing the cooling system to be sized to meet just the sensible latent load C) by reducing the air temperature through evaporation D) by pre-cooling the air entering the evaporator