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A brief exposure to 150 dB sound mayA. damage ear drumsB. cause permanent impairing hearing abilityC. cause temporary impairing hearing abilityD. Both (a) and (b) |
Answer» Correct Answer - D A brief exposure to extremely high sound level, 150 dB or more generated by take off of a jet plane or rocket, may damage ear drums, thus permanently impairing hearing ability. |
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