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Hearing Conservation Quiz

Can you answer these questions?

Question
9
Q
Which of the following is NOT a type of hearing protection?
  • (A)  Ear Muffs
  • (B)  Pre-molded plugs
  • (C)  Foam plugs
  • (D)  Canal caps
  • (E)  Cotton balls
Give me a hint
Hint:
A Johnny Cash song.
A
Show me the Answer
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