Question 21 (1 point)

Which of the following are sources of non-ionizing radiation?

Question 21 options:

	Alpha, beta, X-ray, gamma, neutrons
	Visible light, UV, infrared, lasers, microwave
	Alpha, beta, UV, X-ray, infrared, gamma
	Visible light, UV, infrared, X-ray, neutrons
	None of the above

Question 22 (1 point)

Which of the following is a potential source of thermal comfort?

Question 22 options:

	Temperature
	Relative humidity
	Clothing
	Activity
	All of the above

Question 23 (1 point)

What are the health effects of non-ionizing radiation?

Question 23 options:

	Kills a cell
	Thermal burns
	Alters a cell
	Alters a reproductive cell
	None of the above

Question 24 (1 point)

Which of the following materials is NOT known to contain silica

Question 24 options:

	Topsoil
	Concrete
	Thermostats
	Glass

Question 25 (1 point)

Which of the following represents the 3-control zone model?

Question 25 options:

	Source - Path - receiver
	Elimination - substitution - engineering controls
	Path - engineering controls - administration controls
	Worker/Receiver - administration controls, PPE

Question 26 (1 point)

Which are the 2 basic types of HVAC systems?

Question 26 options:

	Central air conditioning systems and Decentralized air conditioning systems
	Air Volume (CAV) and Variable Air Volume (VAV)
	Portable air conditioner and window air conditioner
	None of the above