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1. |
The calorific value of the natural gas is? |
A. | 1200-1400kcal/m<sup>3</sup> |
B. | 500-800kcal/m<sup>3</sup> |
C. | 800-900Kcal/m<sup>3</sup> |
D. | 12000-14000kcal/m<sup>3</sup> |
Answer» E. | |