Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

Volume of blast furnace slag is about _______________ times the volume

1.	Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?
A.	1.5
B.	3
C.	5
D.	7
Answer» C. 5

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Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

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