Engine : Expired / General Subjects - 129/881
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| When welding with an oxy-acetylene outfit, __________. |
| A) open the acetylene valve until the hose pressure is 26 PSIG |
| B) a flashback of flame into the hose is normal |
| C) a leaking hose must be repaired by binding with tape |
| D) open the acetylene cylinder valve only 1/4 to 1/2 turn and leave the wrench on the valve stem |
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