MCQOPTIONS
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| 1. |
Which one of the following statements is not correct in respect of setting of an inclined tunnel: |
| A. | Reference points are constructed at every 300 m. |
| B. | The alignment is fixed from upper/lower apex point. |
| C. | The level of the invert at the heading is marked by a tape. |
| D. | None the above. |
| Answer» E. | |