本文介绍了我国未来十年的节水目标，并针对我国目前冷却塔存在的问题提出了一些建议。
This article describes the goal of water saving in the next decade, and proposes some Suggestions for the problems in the current cooling tower.
分析了多媒体教学在实际应用中存在的问题，并针对这些问题提出了合理化建议。
This paper analyzes on the problems existing in the actual application of multimedia teaching, and in the light of these problems, advances some rational Suggestions.
并针对建成区扩展中存在的问题，提出了合理化建议。
It also concludes the problems existing in the expansion of built-up area and gives some reasonable Suggestions.
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