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rylie4.4 rylie4.4
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6 years ago
A vital part of the full-body harness is the fixed back _____.
 
  a. T-clamp
  b. A-frame
  c. K-connector
  d. D-ring


[Ques. 2] The main difference between an ERV and an HRV is the _____.
 
  a. way the heat exchanger core works
  b. size of the exhaust fans
  c. type of economizer used
  d. number of heat exchangers


[Ques. 3] Which refrigerant is due to be phased out (no new refrigerant manufactured) by 2030?
 
  a. HFC-410A
  b. HFC-407A
  c. HCFC-22
  d. HFC-417A


[Ques. 4] Which of the following refrigerant conversions is not considered a drop-in?
 
  a. HFC-134a for HCFC-22
  b. HCFC-409A for CFC-12
  c. HFC-407C for HCFC-22
  d. HCFC-123 for CFC-11


[Ques. 5] Which currently available refrigerant can no longer be installed in new equipment at the manufacturing
  level?
 
  a. HFC-134a
  b. HCFC-22
  c. HFC-410A
  d. HFC-407C
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kirandkkirandk
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6 years ago
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rylie4.4 Author
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#2
6 years ago
TYVM
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#3
6 years ago
no worries, happy to help out
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