____________________ produces only a primary combustion flame, unlike hydrocarbon gases, which have both primary and secondary combustion.
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Q44: Which organization has a standard numbering system
Q45: _ contains little or no unoxidized iron.
A)
Q46: In some cylinders a(n) _ tube is
Q47: In a cutting torch, _ is mixed
Q48: Most hand torches will not easily cut
Q50: Gauges that do not read _ when
Q51: _ gas is mostly methane and ethane.
Q52: An infrared analysis or _ of the
Q53: What is an advantage of having two
Q54: Combination cutting and welding sets are often
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