This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is ... (Read 36 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
on: Jul 24, 2018
When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is _____.
 
  a. HFC-410A
  b. HFC-134a
  c. HFC-407C
  d. HCFC-22

Question 2

In which of these situations is it necessary to use outdoor air for combustion on an induced-draft furnace?
 
  a. It is always necessary.
  b. In locations where the outdoor temperature does not fall below 32F.
  c. When the furnace is within 50' of a living space.
  d. When there are chemicals near the furnace


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

zenzy

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 24, 2018
Answer to Question 1

d

Answer to Question 2

d


Capo

  • Member
  • Posts: 545
Reply 2 on: Jul 24, 2018
Excellent

steff9894

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Organization of the vertebrate nervous system. Organization of the vertebrate nervous system.
Covance primate-testing lab, Vienna, Virginia, 2004–05 Covance primate-testing lab, Vienna, Virginia, 2004–05
Four methods of recording electrical activity of the nervous system. Four methods of recording electrical activity of the nervous system.
How to solve a linear system when the variable is in the denominator position (Question 1 of 2) How to solve a linear system when the variable is in the denominator position (Question 1 of 2)
The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ... The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ...
The system moves at 1.50 2 m/s while the inclined planes are rough. a) Determine the ... The system moves at 1.50 2 m/s while the inclined planes are rough. a) Determine the ...
Video: Structures that affect circulation - venous return

For a complete list of videos, visit our video library