- 30
- 45
- 24
- 54
- 50
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) The minimum number of long durations breathing apparatus to be maintained in a Rescue room with refresher practice is__.
Solution:
30
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