What type of noise can be abated by providing lining on walls and ceiling with sound absorbing material?

What type of noise can be abated by providing lining on walls and ceil

1.	What type of noise can be abated by providing lining on walls and ceiling with sound absorbing material?
A.	Source noise
B.	Reflection noise
C.	Structural noise
D.	Direct air-borne noise
Answer» C. Structural noise

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What type of noise can be abated by providing lining on walls and ceiling with sound absorbing material?

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