The ductwork connections for a rooftop packaged unit are typically:
A) On the top of the unit.
B) On the side of the unit.
C) On the bottom of the unit.
D) Not used because they do not connect to ductwork.
C
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Cuando se apilan láminas de acero o aluminio, se las debe mantener _____ para evitar la decoloración.
a. lejos de la luz directa del sol b. en un lugar por completo oscuro c. en un ambiente húmedo d. completamente secas
Production by agricultural animals is never limited by age.
Answer the following statement true (T) or false (F)
An open-loop system:
A) Controls conditions for machines that are open to the air. B) Monitors conditions that it can control. C) Monitors conditions that it cannot control. D) Connects to the main controller through an open wireless system.
A split-system air conditioner that does not operate at all most likely has:
A) An inefficient compressor. B) A refrigeration problem. C) An electrical problem. D) An airflow problem.