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1. |
A pulverized coal boiler produces approximately _____ fly ash and ______ bottom ash. |
A. | 60 %; 40 % |
B. | 50 %; 50 % |
C. | 80 %; 20 % |
D. | 70 %; 30 % |
Answer» D. 70 %; 30 % | |