MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
The efficiency of a modern boiler using coal and heat recovery equipment is about |
| A. | 5 to 30% |
| B. | 0 to 50% |
| C. | 5 to 70% |
| D. | 5 to 90% |
| Answer» E. | |