White smoke coming out of the chimney of a furnace indicates the use of_________________?
(A) Low excess air
(B) Very high excess air
(C) Gaseous fuel in the furnace
(D) Liquid fuel in the furnace
Share this... |
![]() Facebook
|
![]() Twitter
|
![]() Linkedin
|
![]() Whatsapp
|
Your email address will not be published. Required fields are marked *