How does the induced draft blower improve furnace efficiency of a natural draft furnace?
A) the combustion gasses can be introduced into the duct system, raising the supply air temperature
B) combustion gasses do not have to be as hot to correctly vent
C) the induced draft motor uses less current than the natural draft motor
D) the induced draft blower makes it possible for furnaces to use larger, more open heat exchangers
Question 2
Seal face distortion can cause _____.
a. misalignment
b. excessive leakage
c. pitting
d. blistering
Boundaries within landscapes created by human activity (background) and natural environmental gradie
induced pluripotent stem cells
This lithograph of the New York draft riots, 1863, shows that although the rioters mainly targeted b
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