Oxygen manifolds must be at least ____ feet away from fuel gas manifolds.
A) five
B) ten
C) fifteen
D) twenty
Correct Answer:
Verified
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Q14: Acetylene is produced by mixing _.
A) acetyl
Q15: Acetylene is unstable at pressures above _
Q16: Hydrocarbons are made up of _.
A) hydrogen
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Q34: Combining calcium carbide and water produces _.
A)
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