c. precipitation
d. all of the above
all of the above
Question 60
Marks: 1
Which of the following are not major sources of sulfur dioxide pollution?
Choose one answer.
a. metal smelters
b. coal and oil burning power plants
c. refineries
d. electrical substations
electrical substations
Question 61
Marks: 1
In general terms, it is safe to assume that any two identical sound levels will have the effect of increasing the
overall level by 10 dB.
Choose one answer.
a. True
b. False
False
Question 62
Marks: 1
Halon-1301 is used primarily in ______.
Choose one answer.
a. portable fire suppression systems
b. fixed fire suppression systems
c. precision cleaning processes
, d. plastic foam blowing
fixed fire suppression systems
Question 63
Marks: 1
Sounds with a frequency of 30 hertz (Hz) are considered very low pitch.
Choose one answer.
a. True
b. False
True
Question 64
Marks: 1
The major factors related to hearing loss are
Choose one answer.
a. time duration of exposure and repeated impact
b. intensity of sound waves
c. frequency content of sound
d. all of the above
all of the above
Question 65
Marks: 1
Which of the following is not a malodorous gas?
Choose one answer.
a. sulfur dioxide
b. hydrogen sulfide
c. carbon monoxide
d. phenol
d. all of the above
all of the above
Question 60
Marks: 1
Which of the following are not major sources of sulfur dioxide pollution?
Choose one answer.
a. metal smelters
b. coal and oil burning power plants
c. refineries
d. electrical substations
electrical substations
Question 61
Marks: 1
In general terms, it is safe to assume that any two identical sound levels will have the effect of increasing the
overall level by 10 dB.
Choose one answer.
a. True
b. False
False
Question 62
Marks: 1
Halon-1301 is used primarily in ______.
Choose one answer.
a. portable fire suppression systems
b. fixed fire suppression systems
c. precision cleaning processes
, d. plastic foam blowing
fixed fire suppression systems
Question 63
Marks: 1
Sounds with a frequency of 30 hertz (Hz) are considered very low pitch.
Choose one answer.
a. True
b. False
True
Question 64
Marks: 1
The major factors related to hearing loss are
Choose one answer.
a. time duration of exposure and repeated impact
b. intensity of sound waves
c. frequency content of sound
d. all of the above
all of the above
Question 65
Marks: 1
Which of the following is not a malodorous gas?
Choose one answer.
a. sulfur dioxide
b. hydrogen sulfide
c. carbon monoxide
d. phenol
