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| Q. |
Rockfill cofferdam used for a depth of water up to…… |
| A. | 1.8 to 2.8 m |
| B. | 1.8 to 4 m |
| C. | 1.8 to 3.2 m |
| D. | 1.8 to 3 m |
| Answer» D. 1.8 to 3 m | |
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