Depending on the workmanship, air leakages from ducts can vary by __________.
a) 1% to 5 %
b) 3% to 5 %
c) 5% to 10 %
d) 5% to 30 %
e) 10% to 40 %
Answer: D
Depending on the workmanship, air leakages from ducts can vary by __________.
a) 1% to 5 %
b) 3% to 5 %
c) 5% to 10 %
d) 5% to 30 %
e) 10% to 40 %
Answer: D