Engine_2014 : Engineering Safety - 1354/2355
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| The flammable limits of methane by volume is 5% to 15%. If the combustible gas indicator reading is 50% when sampling a compartment containing methane, the flammable vapor concentration at the sample point is __________ . |
| A) 0.5% by volume |
| B) 2.5% by volume |
| C) 7.5% by volume |
| D) 50.0% by volume |
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