飞行员 发表于 2025-3-28 16:00:47
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Navigation,ovide a great stimulus to the economy. New mining developments may be opened up. Industries may be established in locations that would otherwise be uneconomical. Existing industries may be able to compete more vigorously. One of the reasons that navigation may provide inexpensive transportation is tFermentation 发表于 2025-3-29 04:11:08
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http://reply.papertrans.cn/103/10211/1021014/1021014_46.pngmajestic 发表于 2025-3-29 16:50:33
Economic Analysis,e basin several water development schemes are technically possible and that all of them would provide great benefits to the people. However, the funds of society to launch large public undertakings are limited, and there are competitive uses for those funds. Therefore every project must be carefullyImmunotherapy 发表于 2025-3-29 23:47:15
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Planning,evelopment of our human and physical resources takes place in the most beneficial way. If we pursue this thought a little further, we may observe that in creating an engineering project, we must perform the following, distinctly different, tasks.Androgen 发表于 2025-3-30 06:28:48
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