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 acetylene cylinder should be closed first.
C) The last gas to go through the torch will be a flammable gas.
D) The acetylene and oxygen lines should be bled simultaneously.
C
You might also like to view...
Which of the following leads to cleanup costs?
A. Overfilling B. Pulling a vacuum on a tank while emptying C. Putting wrong or off-spec material in a vessel D. All of the above
Un sensor GFCI detectará un desequilibrio de corriente de al menos:
a. 6 microamperios. b. 4 miliamperios. c. 4 microamperios. d. 6 miliamperios.
Explain the symbiotic relationship of bacteria in the soil and the plants
What will be an ideal response?
Perhaps the innovation that has helped more than any other in the battle against weeds is that of _____________________ altered crops
Fill in the blank(s) with correct word