Question

when finished with the oxy-fuel system________
select one:
○ a. back off regulators
○ b. drain hoses
○ c. turn off cylinders
○ d. close all valves
○ e. all of these

Explanation:

When finishing with an oxy - fuel system, proper shutdown procedures include back - off regulators, draining hoses, turning off cylinders, and closing all valves. So all the options a - d are part of the correct shutdown process.

Answer:

e. All of these