Generally it isnt harmful to our ears when sounds are up to______.A.140 decibelsB.100 dec
已帮助 人
Generally it isnt harmful to our ears, when sounds are up to______.
A.140 decibels
B.100 decibels
C.80 decibels
D.160 decibels
请帮忙给出正确答案和分析,谢谢!
