The artificial draught normally is designed to produce____________?
Correct answer: D. all of the above
- A. less smoke
- B. more draught
- C. less chimney gas temperature
- D. all of the above
Explanation
Artificial draught improves combustion, reduces smoke, and allows the gases to leave with a lower temperature than in poorly controlled natural draught systems. Thus, all the listed effects are intended benefits.
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