The amount of outside air introduced can be controlled using ...

[ENagel]

The amount of outside air introduced can be controlled using
 
  A) an N2 sensor B) a CO2 sensor C) a CO sensor D) an O2 sensor

Question 2

Outside air is drawn into the building through
 
  A) naturally occurring cracks in the building B) a hole in the air handler cabinet
  C) an outside air damper D) a calibrated grille in the return air duct

[abctaiwan]

Answer to Question 1

B

Answer to Question 2

C

[ENagel]

YES! Correct, THANKS for helping me on my review

[AmberC1996]

Thanks for the timely response, appreciate it