28.
Early damage to hearing may not be noticed by the individual.
a. Always.
b. Never.
c.
Sometimes.
d. All of the above.
29.
Which are the correct factors in determining the degree of noise hazard?
a. Intensity, frequency, tone, nature of noise, and duration of exposure.
b. Frequency, tone, nature of noise, and duration of exposure.
c.
Sound, intensity, frequency, steady noise, nature of noise, and duration of
exposure.
d. Intensity, frequency, nature of noise, and duration of exposure.
30.
If the frequency of noise determines its pitch, then which pitched noise is more
likely to be dangerous to the individual?
a. High.
b. Medium.
c.
Low.
d. Intermittent.
31.
Based upon exercise # 30, which item would be more dangerous to the ear than a
gasoline chain saw?
a. Diesel truck.
b. Grinder, electric.
c.
Chain saw.
d. None of the above because their frequencies are lower.
MD0165
3-36