The amount of air required to supply just enough oxygen for complete combustion is called the:
a. Minimum air
b. Perfect air
c. Primary air
d. Theoretical air
e. Secondary air
Answer: D
The amount of air required to supply just enough oxygen for complete combustion is called the:
a. Minimum air
b. Perfect air
c. Primary air
d. Theoretical air
e. Secondary air
Answer: D