What regulates the draft through the heat exchanger and prevents downdrafts from blowing into the heat exchanger on natural draft gas furnaces?
A) The draft regulator B) The barometric damper
C) The draft diverter D) The induced draft blower
C
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The axial skeleton is used for locomotion and grooming, and, to some extent, for defense and feeding.
Answer the following statement true (T) or false (F)
Damaging a metal surface raises stress, weakening the part. This is called a(n) "____________________."
Fill in the blank(s) with the appropriate word(s).
How did European states handle potential internal opponents of the war just before it commenced?
a. imprisonment b. deportation to other countries c. house arrest d. the offer of incentives not to oppose the war
The correct lighting procedure for an oxyacetylene torch is:
A) Crack the acetylene and light it first, then add the oxygen. B) Crack the oxygen and light it first, then add the acetylene. C) Fully open both the acetylene and oxygen, wait 30 seconds, and then light the mixture. D) Crack both the acetylene and oxygen and light the mixture.