What two pressures are created by air moving through the duct ...

[storky111]

What two pressures are created by air moving through the duct system?
 
  A) Barometric pressure and atmospheric pressure B) Supply pressure and return pressure
  C) Air pressure and friction pressure D) Velocity pressure and static pressure

Question 2

Carbon monoxide usually enters the living space:
 
  A) Through infiltration from the outside.
  B) Through the respiration of the building occupants.
  C) Through excessive ventilation from the outside.
  D) From one area of the building to another.

[ong527]

Answer to Question 1

D

Answer to Question 2

D

[storky111]

Gracias!

[Liamb2179]

TYSM