Q. The level of noise recommended in most countries is
A. 30-40 dB
B. 95-100 dB
C. 85-90 dB
D. 75-80 dB
Answer: 85-90 dB
A. 30-40 dB
B. 95-100 dB
C. 85-90 dB
D. 75-80 dB
Answer: 85-90 dB
