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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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