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xr xr
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Posts: 479
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6 years ago
As the outdoor temperature decreases, the maximum relative humidity that is safe to maintain indoors
 
  A) Stays the same, 50 B) Increases
  C) Decreases D) Stays the same, 60

 Q. 2

Compared to the installation of a gas or oil furnace, an electric furnace installation is
 
  A) Less complex, but generally more difficult B) Less complex and easier
  C) About the same complexity and difficulty D) More complex, but generally easier

 Q. 3

The heat for welding can come from:
 
  A) Friction B) Chemical reaction C) Electrical current D) All of the above
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mas0375mas0375
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#1
6 years ago
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xr Author
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6 years ago
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