What are three basic components of a welding symbol?

What will be an ideal response?


reference line, tail and leader

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What two conditions indicate that normal excitation has taken place?

What will be an ideal response?

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What happens when a catalyst is added to a chemical reaction?

A) A new substance is formed B) A physical reaction occurs C) Speed of the reaction is decreased D) Speed of the reaction is increased

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Name two approaches to HEA that can be effective?