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Core Examination 50 Questions With Complete Solution The material that is used over roof beams or rafters as a base for the roofing is called: A. flashing B. sheathing C. fascia D. baseboard - B. Sheathing If one end of a copper tube is heating, the other end will soon become very hot also. The heat moves from one end to the other by: A. conduction B. convection C. air movement within the tube D. wave energy - A. conduction Before beginning any electrical checkout procedure, what ...