Why might closing the oxygen cylinder, then the acetylene cylinder, then bleeding first the oxygen line, then finally the acetylene line at the end of a brazing project create a hazardous situation?
A) The acetylene and oxygen cylinders should be closed simultaneously.
B) The last gas to go through the torch will be a flammable gas.
C) The acetylene and oxygen lines should be bled simultaneously.
D) The acetylene cylinder should be closed first.
B
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