Question: (will vote up) please answer as many as possible. four simple multiple choice is like one longer answer question. if you wont help with all

(will vote up) please answer as many as possible. four simple multiple choice is like one longer answer question. if you wont help with all just please do not answer :) have a great day !!
19. Estimators on office buildings may want to know about this product, because architects and engineers may specify the material to hide structural steel or floor plates. A. Plate glass B. Tempered glass C. Insulating glass D. Laminated glass E. Spandrel glass 20. Which roof insulation product has closed cells, is sold by the board foot, and is strong enough to use under parking garage decks? A. Dow Chemical Polystyrene B. Pittburgh Esamelas C. Knauf Perlite D. Thermafiker Mineral Fiber 21. Which of the following is not a significant pricing factor in variability of roof installation labor costs? A. Roof pitch or slope B. Roof size C. Safety ladders D. Number of openings in roof E. Distance of roof from groundStep by Step Solution
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