Engine_2014 : Engineering Safety - 791/2355
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| If a mixture containing air and a concentration of flammable vapor, is capable of ignition when exposed to a spark or other source of ignition, it is said to be __________ . |
| A) in the flammable range |
| B) at the rich point limit |
| C) at the auto ignition point |
| D) above the upper explosive limit |
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