Engine : Engineering Safety - 1222/968
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| If flammable vapors have penetrated a gas free space, which of the following actions would be the most hazardous to perform? |
| A) Opening switches in the space to de-energize circuits. |
| B) Closing switches adjacent to the space to operate vent fans. |
| C) Leaving electrical circuits energized in the space. |
| D) Securing all power to the space from a remote location. |
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