High noise level in a chemical plant can be controlled by the_________________?
(A) Suppression of noise at the source itself
(B) Path control of noise
(C) Protection of operating personnel
(D) All
Share this... |
![]() Facebook
|
![]() Twitter
|
![]() Linkedin
|
![]() Whatsapp
|
Your email address will not be published. Required fields are marked *