One drawback of using custom made, pre-measured duct sections is that ____.
A. if the measuring was not done correctly, the job may not go together
B. the sharp edges provide possible safety issues
C. altering a duct section at the job site is extremely cost-ineffective
D. all of the above
Answer: D
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Answer the following statement true (T) or false (F)
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What will be an ideal response?