A direct-fired make-up air unit typically achieves a combustion efficiency of _____.
a. 70 percent
b. 80 percent
c. 90 percent
d. 100 percent
d. 100 percent
You might also like to view...
Huge macromolecules are formed by the ____ of small mers.?
A. ?pyrolysis B. ?polymerization C. ?hydrolysis D. ?oxidation
When using print media, which of these has the best chance of reaching your target audience?
A) National magazine B) Web site C) Metropolitan area newspaper D) Local newspaper
Which is a valid explanation of (?X/?Y)_Z?
A. The independent variable X is being changed to observe the effect on dependent variable Y, while variable Z is kept constant. B. The independent variable Y is being changed to observe the effect on dependent variable X, while variable Z is kept constant. C. The independent variable Y, which is part of function Z, is being changed to observe the effect on dependent variable X. D. The independent variable X is being changed Z number of times to observe the effect on dependent variable Y. E. None of these are correct.
2. Explain what work hardening is.
What will be an ideal response?