An energy recovery ventilator: A) Exchanges sensible heat ...

[jon_i]

An energy recovery ventilator:
 
  A) Exchanges sensible heat between the intake and exhaust air streams.
  B) Exchanges humidity between the intake and exhaust air streams.
  C) Exchanges position between the intake and exhaust air streams.
  D) Exchanges sensible heat and humidity between the intake and exhaust air streams.

Question 2

Why do solenoid-type valves pose a problem for some types of burners?
 
  A) Solenoids open and close too quickly.
  B) Solenoids open and close too slowly.
  C) Solenoids create too much pressure when closing.
  D) Solenoids' seal is not strong.

[randomguy133]

Answer to Question 1

D

Answer to Question 2

A

[jon_i]

Thanks for the timely response, appreciate it

[anyusername12131]

Wow, this really help