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1. |
The pretressed concrete pipes are ideally suited for a pressure range of: |
A. | 0.6 to 4n/mm<sup>2</sup> |
B. | 0.5 to 4n/mm<sup>2</sup> |
C. | 0.8 to 4n/mm<sup>2</sup> |
D. | 0.10 to 4n/mm<sup>2</sup> |
Answer» C. 0.8 to 4n/mm<sup>2</sup> | |