An air contaminant that is most difficult to remove through ...

[serike]

An air contaminant that is most difficult to remove through common filtration methods is:
 
  A) Pollen B) Mold spores C) Sawdust D) Virus

Question 2

To resist corrosion, the recuperative cell on a condensing oil furnace is made of:
 
  A) Aluminized steel. B) High-quality stainless steel.
  C) Teflon-coated steel. D) Heavy galvanized steel.

[matt95]

Answer to Question 1

D

Answer to Question 2

B

[serike]

Wow, this really help

[steff9894]

Thanks for the timely response, appreciate it