The middle ordinate for a 6-inch Schedule 40 fishmouth on an 8-inch Schedule 40 header is _____.
a. 9/16
b. 2-1/4
c. 3-7/8
d. 4-7/16
a. 9/16
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Sealed combustion oil furnaces use:
A) A separate bottled oxygen supply for cleaner combustion. B) Special sealed airtight barometric draft regulators. C) High static oil burners. D) No vent because the combustion chamber is sealed.
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The first step to balancing an air distribution system is making certain that __________ is being provided by the blower.
What will be an ideal response?
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Orthographic projection is also called "proportional projection."
Answer the following statement true (T) or false (F)
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Form tolerances require a reference to a datum.
Answer the following statement true (T) or false (F)
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