MCQOPTIONS
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MCQOPTIONS
| 1. |
The effective area of tube diffuser used in the aeration tank is |
| A. | 400cm<sup>2</sup> |
| B. | 780cm<sup>2</sup> |
| C. | 1160cm<sup>2</sup> |
| D. | 800cm<sup>2</sup> |
| Answer» D. 800cm<sup>2</sup> | |