Engine_2014 : General Subjects - 1453/3524
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| When securing an oxyacetylene cutting outfit for an extended period, you should close the __________ . |
| A) hand valves on the torch only |
| B) cylinder valves only |
| C) cylinder valves and close torch valves with 4 to 5Â pounds of pressure in the hoses |
| D) cylinder valves and close torch valves when pressure in hoses and regulators is zero |
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