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| When securing an oxy-acetylene cutting outfit for an extended period, you should close the __________. |
| A) cylinder valves and close torch valves when pressure in hoses and regulators is zero |
| B) cylinder valves and close torch valves with 4 to 5 pounds of pressure in the hoses |
| C) cylinder valves only |
| D) hand valves on the torch only |
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