The flow of air through a furnace is referred to as:
a. suction
b. draft
c. air velocity
d. O2 %
Answer: D
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Lateral loads are caused by wind and seismic activity and vary in intensity according to the location of the structure and seismic activity.
Answer the following statement true (T) or false (F)
Cold fuel spray can cause a bulb to shatter, and the hot filament can start a very dangerous fuel fire.
Answer the following statement true (T) or false (F)
____________________ are symbolic names that represent values stored in memory.
Fill in the blank(s) with the appropriate word(s).
The general types of commercial control systems include:
A) Self-contained and remote. B) DC millivoltage, DC microamp loop, and AC frequency modulation. C) Low-voltage, line voltage, and millivoltage. D) Electric, electronic, and pneumatic.