?Why must all surface contamination be removed before making a repair weld?
A. ?To prevent injuring your health from exposure to materials released during welding.
B. ?Some chemicals contaminations can be completely safe until they are exposed to the welding.
C. ?The smoke or fumes contamination produce can be an irritant to the skin or eyes.
D. ?All of the above
Answer: D
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What will be an ideal response?
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