This topic contains a solution. Click here to go to the answer

Author Question: What type of sensor is most often used to detect very low parts per million for toxic refrigerants? ... (Read 25 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
What type of sensor is most often used to detect very low parts per million for toxic refrigerants?
 
  A) Photoacoustic infrared (PIR) B) Nondispersive infrared (NDIR)
  C) Electrochemical (EC) sensors D) Ceramic metal oxide semiconductor (CMOS)

Question 2

Why are a hammer and chisel used on a DOT 39 cylinder?
 
  A) To break open the cylinder
  B) To lessen refrigerant pressure
  C) To remove the nozzle
  D) To open the rupture disk when disposing an empty cylinder



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nhea

  • Sr. Member
  • ****
  • Posts: 305
Answer to Question 1

C

Answer to Question 2

D




danielfitts88

  • Member
  • Posts: 535
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)


Mochi

  • Member
  • Posts: 300
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

For a complete list of videos, visit our video library