How can the operator recognize a neutral fuel gas flame?
A) The outer cone should have a relatively smooth shape.
B) A slight hissing sound should be heard.
C) The lengths of the inner cone and the outer cone are almost equal, with the inner cone recessed by 1/16 inch to 1/8 inch from the outer cone.
D) All of the above
E) None of the above
D
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What will be an ideal response?
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What will be an ideal response?
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A. knuckle thread B. buttress thread C. acme thread D. worm thread
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