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15. How is a high-temperature flame produced at the torch tip in oxyacetylene welding (OAW) and torch brazing (TB)? 16. Name two commonly used thermal cutting processes. 17. Which cutting process uses a forceful stream of oxygen flowing out a center hole in the tip to burn away hot steel?
18. What cutting process uses a stiff, highly ionized, ex- tremely hot column of gas to almost instantly vaporize the metal being cut? 19. List three factors that can help determine which welding process to select for a certain job. 20. Name three methods used to perform welding, cutting, or brazing operations. 21. Name five different types of welding career opportunities. 22. What are some skills that entry-level welders need? 23. What are the names of the two American Welding Society (AWS) levels of certification for welders? 24. What does the AWS abbreviation “SENSE” stand for? 25. What practical knowledge subject areas are covered in Module 1 of the SENSE program? 26. What four welding processes are covered in the SENSE program? 27. What is the name of the organization that sponsors a series of welding skill competitions for welding students?