Engine_2014 : Motor Plants and Auxiliary Boilers - 2186/2614
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| The burner assembly on an automatically fired auxiliary boiler fitted with variable capacity, pressure atomizing burners, maintains steam pressure by __________ . |
| A) cycling on and off |
| B) changing fuel oil return pressure |
| C) changing the speed of a rotary cup |
| D) varying air pressure supplied to the nozzle |
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