MCQOPTIONS
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| 1. |
Silica refractories are not used in |
| A. | coke oven walls. |
| B. | beehive coke ovens. |
| C. | dome and upper portion of B.F. stoves. |
| D. | open hearth furnace roof. |
| Answer» C. dome and upper portion of B.F. stoves. | |