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Stevend95 Stevend95
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6 years ago
The thread on an oxygen hose is always _____.
 
  a. a right-hand thread
  b. a left-hand thread
  c. painted red
  d. painted blue

 Q. 2

A Category I furnace operates with
 
  A) a low temperature, positive pressure vent B) a low temperature, negative pressure vent
  C) a high temperature, positive pressure vent D) a high temperature, negative pressure vent
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amiraamira
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6 years ago
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6 years ago
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