Which of the following is an incorrect statement regarding air system fittings and transitions?
A) Their pressure loss is greater than that of a given length of the same size straight duct.
B) They can be used to change the direction of airflow in a duct system.
C) They have the same pressure loss per foot as the same size of straight duct.
D) They can be used to change the velocity of airflow in an air duct system.
Answer: C
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