The abbreviation for refrigerants containing chlorine, fluorine, and carbon is ____.

A. HFC
B. HCFC
C. CFC
D. HFAC


Answer: C

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In the accompanying figure, angle 1 measures 28o and angle 2 measures 11o. What is the measure of angle 3?

What will be an ideal response?

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The data shown in Table 2.20 were collected for ozone levels in the Los Angeles, CA air basin. Plot the data recorder below in Excel in ppm and µg/m3. Identify the years LA was not in compliance with the NAAQS standards.



What will be an ideal response?

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Wood or steel frames installed between inner and outer wall forms to create window or door openings are

called _____. a. spacers b. holdouts c. bucks d. lintels

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Internally equalized thermostatic expansion valves:

A) Can be used on any type of system. B) Are constructed so that the pressures across the needle seat are equal. C) Measure the evaporator pressure through a passageway inside the valve. D) Allow the system pressures to equalize on the off cycle.

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