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1. |
Based on the current technology, do you consider Winkler gas producer efficient and is still better to use? |
A. | Yes, it can still be used |
B. | Depending on the process we should decide its efficiency |
C. | No, because of its high consumption of oxygen |
D. | No, because it is big in size. |
Answer» D. No, because it is big in size. | |