« previous next »

Author Question: New residential air conditioning systems now primarily use: A) HFC-134a. B) CFC-12. C) HFC-410A. ... (Read 120 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
on: Jul 26, 2018
New residential air conditioning systems now primarily use:
 
  A) HFC-134a. B) CFC-12. C) HFC-410A. D) HCFC-22.

Question 2

The standard industry number designation for each refrigerant is assigned by:
 
  A) RSES - Refrigeration Service Engineer's Society.
  B) ASHRAE - American Society of Heating Refrigeration and Air Conditioning Engineers.
  C) NIST - National Institute for Standards and Testing.
  D) AHRI - Air Conditioning Heating and Refrigeration Institute.


BUTTHOL369

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Organ systems of the human body. Organ systems of the human body.
Organ Systems Organ Systems
Review of Systems ROS Cont. Review of Systems ROS Cont.
Commonly Used Equivalents for the Apothecary and Metric Systems Commonly Used Equivalents for the Apothecary and Metric Systems
Bacteriophage site-specific recombination systems Bacteriophage site-specific recombination systems
Video: DNA fingerprinting Animation

For a complete list of videos, visit our video library