45. Which paint contains polystyrene as a base? A. O Synthetic rubber B. O Enamel C. O Aluminium D. O Emulsion
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- USE NSCP2015Distinguish between painting and electroplating in trying to minimize corrosion .1. Importance of ductility test for road construction. 2. Iraqi standard for minimum ductility. 3. Effect of temperature and rate of pulling on ductility value. 4. Importance of adding NaCl (food salt). 5. What is the reason of not coating the clips inside surface of ductility mold by a lubricant?