Asked by rfvv
                According to Standard 62-1989: Ventilation for Acceptable Indoor Quality of the American Society for Heating, Refrigeration, Air Conditioning Engineers, adequate supply of outdoor air should be about 20 cubic feet per minute per occupant. 
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How do you read "Standard 62-1989"?
1. Standard sixty-two dash nineteen eighty-nine
2. Standard sixty-two hyphen nineteen eighty-nine
3. Standard sixty-two nineteen eighty-nine
            
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How do you read "Standard 62-1989"?
1. Standard sixty-two dash nineteen eighty-nine
2. Standard sixty-two hyphen nineteen eighty-nine
3. Standard sixty-two nineteen eighty-nine
Answers
                    Answered by
            Writeacher
            
    Both #1 and #3 are considered correct, but the pronunciation would need to be consistent throughout, not wavering back and forth between the two.
    
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