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| Q. |
Which of the following statement is wrong? |
| A. | The quality of tube well water is better than that of surface sources. |
| B. | The discharge of tube well is more than that of an open well. |
| C. | The tube well should not derive water from the first pervious strata. |
| D. | none of the above |
| Answer» D. none of the above | |
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