In the modern refrigeration cycle, the compressor:

A) Reduces the pressure of the liquid from the condenser to the evaporator.
B) Increases the pressure of the liquid refrigerant so that it will circulate through the system.
C) Transfers heat to the outdoor air.
D) Pumps low-pressure, low-temperature vapor to high-pressure, high-temperature vapor.


B

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A combined dead-load and lateral-load support anchor for stone cladding consists of ________.

A) a stainless steel J-shaped bent plate. B) a stainless steel H-shaped bent plate. C) a stainless steel L-shaped bent plate. D) a stainless steel L-shaped bent plate welded to a stainless steel flat plate. E) none of the above.

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A purebred breeder usually provides purebred _____ for commercial producers.

Fill in the blank(s) with the appropriate word(s).

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The stack switch or stack relay ____.

A. starts the fan motor when the thermostat calls for heat B. shuts down the burner if it does not sense heat in the flue products C. cuts off the ignition after the flame has been established D. all of the above

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A colorless, odorless, tasteless gas that supports combustion is _____

a. helium b. oxygen c. nitrogen d. neon

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