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| Q. |
A steel cylinder which is pushed in the soft soil is determined as |
| A. | jar born |
| B. | shield |
| C. | rod |
| D. | pole |
| Answer» B. shield | |
| Explanation: in the case of soft grounds, tunneling can be dangerous and cave-ins are common. to prevent this, an iron or steel cylindrical element called shield is placed in the soft soil, which can crave the hole perfectly. | |
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