Calorific value of furnace oil is about _______________ Kcal/kg?
A. 10,000
B. 15,000
C. 5,000
D. 20,000
Calorific value of furnace oil is about _______________ Kcal/kg?
A. 10,000
B. 15,000
C. 5,000
D. 20,000