Результаты (
русский) 1:
[копия]Скопировано!
For testing, the engineers chose a truck, which weighed 12,000 lb*****. This truck drove quite safely across the paper bridge. The engineers are sure that the bridge can take six times the truckload of 12,000 lb. The bridge itself weighed 9,000 lb. Therefore, the structure was light enough to be laid into place by helicopter.
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