Engine_2014 : Steam Plants - 962/1951
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| To assure a long service life for boiler refractory materials after installation, the most effective method is to __________. |
| A) maintain a high furnace temperature at all times |
| B) patch refractory with plastic chrome ore |
| C) properly secure refractory with anchor bolts |
| D) avoid rapid temperature changes and follow recommended operating procedures |
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