Once acid is created within the refrigeration system:
A) Dry nitrogen must be used to reverse the increase in system high-side pressure caused by the acid.
B) It can cause a burnout when the refrigerant is exposed to the compressor motor.
C) Only a multiple evacuation procedure can be used to evacuate the refrigeration system.
D) It becomes impossible to remove brazing oxides and metal particles from the system, even if a filter drier is used.
B
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What type of furnace draft uses rotary blowers, driven by electric motors or steam turbines?
A. Assisted draft B. Induced draft C. Natural draft D. Balanced draft
El factor de demanda para cargas de artefactos fijos (se excluyen secarropas y hornos) en el cálculo de carga de servicio estándar es del:
a. 40%. b. 50%. c. 75%. d. 100%.
____________________ can be made by cutting the heads off some bolts and using a hacksaw to cut a screwdriver slot in them.
Fill in the blank(s) with the appropriate word(s).
What are the signs of athlete's foot?
What will be an ideal response?