1. Which of these heating methods is most commonly used as a heat source in cold climates?

2. Which of the following is a device used to maintain indoor air quality?

3. The purpose of an evaporator in the refrigeration cycle is to _____.

4. Heat can be transferred from a refrigerant to the outdoors on a hot day because the _____

5. The expansion device in a mechanical refrigeration system _____.

6. Oxygen is never used to purge an HVAC system because _____.

7. Which of these devices is used for energy conservation?

8. In order to reduce duct leakage, ducts should be sealed with _____.

9. If a refrigerant is removed from a system and held in a storage tank for return to the same system, it is said to have been _____.

10. Local building codes are based on the _____.

11. Refusing to cut corners on a job is an example of _____.

12. Speaking well of your employer to others is an example of _____

13. How many hours each year does a typical apprenticeship trainee spend in the OJL?

14. A company that would respond to a service request for a chiller would most likely be _____.

15. An employee who works as a test technician most likely works for a _____.