

MCQOPTIONS
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1. |
__Temperature of __________ can not be measured by an optical or radiation pyrometer.__ |
A. | Hot blast (air) from stoves |
B. | Molten slag flowing out of blast furnace |
C. | Combustion space in boilers |
D. | Rotary limestone calcination kiln |
Answer» B. Molten slag flowing out of blast furnace | |