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| Q. |
Which of the following statement is correct? |
| A. | The coal ash is used in the initial stages of new construction if steel sleepers are used. |
| B. | The broken stone has very poor interlocking action. |
| C. | The gravel ballast has very poor drainage property. |
| D. | The sand ballast causes wear of rail seats and keys. |
| Answer» D. The sand ballast causes wear of rail seats and keys. | |
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