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memoloka memoloka
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6 years ago
Why are some reclaimed refrigerants classified as hazardous materials?
 
  A) They are mixed with other oils.
  B) They have been recycled before being reclaimed.
  C) They are from pre-1993 systems.
  D) They have been through sealed systems.

 Q. 2

Surfacing welds can be used to _____.
 
  a. weld stainless steel pieces together
  b. join sections of pipe
  c. build up surfaces
  d. weld carbon steel pieces together

 Q. 3

What is the switching action of a fan cycling head pressure control?
 
  A) Open on pressure rise
  B) Close on pressure rise for induced draft condensers, open on pressure rise for forced draft condensers
  C) Close on pressure rise
  D) Open on pressure rise for induced draft condensers, close on pressure rise for forced draft condensers
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dymasrajadymasraja
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6 years ago
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memoloka Author
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#2
6 years ago
Were some really tough homework problems! Thanks for answering all of them correctly
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