Engine : Steam Plants - 450/811
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| Which of the listed procedures is the most important factor to take into consideration when making repairs to the refractory surrounding the burner openings? |
| A) Design refractory cone angle must be maintained. |
| B) All cracks must be completely filled. |
| C) Plastic firebrick must be used. |
| D) Finished repair surfaces must be smooth. |
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