Why should an outdoor oil storage tank be kept as full as possible in cold weather?
A) To increase the pressure inside the tank in cold weather
B) To keep the oil viscosity from increasing in cold weather
C) To prevent moisture from condensing on the inside of the oil storage tank
D) To prevent a dangerous buildup of methane gas on top of the tank
C
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Al instalar una extensión reticulada abatible, los soportes adicionales deben ______.
a. extenderse hasta la mitad b. extenderse y configurarse según las recomendaciones del fabricante c. permanecer sin extenderse d. extenderse completamente
The principal safety feature of a water heater is the _____.
a. gas shutoff valve b. temperature and pressure valve c. thermostat d. burner override
Los dispositivos de control para relés de estado sólido incluyen todos los siguientes EXCEPTO:
a. transistores de potencia. b. triacs. c. relés de láminas. d. resortes de tungsteno de alta tensión.
Technician A says that daytime running lights (DRLs) light the headlights, usually at reduced intensity, whenever the engine is running. Technician B says high-intensity discharge (HID) headlights are brighter and have a yellow tint. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B