The most widely used numbering and lettering system is the one developed by the American Society for Testing and Materials (ASTM).

Answer the following statement true (T) or false (F)


False

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____ cutting tools require much more force to do their job.

a. Sharp b. New c. Dry d. Dull

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Briefly describe how a fillet weld can be created in a 3D CADD model, the weld specifications stored in the model, and the model weld parameters referenced to add a complete welding symbol to the drawing.

What will be an ideal response?

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What is the physical significance of the Lewis number? How is it defined? What does a Lewis number of 1 indicate?

What will be an ideal response?

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Which of the following keeps the flame from entering the hoses and regulator?

a. Oxygen shutoff valve b. Acetylene shutoff valve c. Flame suppressor d. Flashback arrestor

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