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motorhead motorhead
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Posts: 5695
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8 years ago
Hearing protection should be worn any time the noise level exceeds ________.
A) 60 dB      B) 90 dB      C) 80 dB      D) 70 dB
Textbook 
Automotive Technology

Automotive Technology


Edition: 4th
Author:
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mag90simag90si
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8 years ago
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#2
3 years ago
thanks
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