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(一) 一九七六年,继我党失去敬爱的周恩来总理和朱德委员长之后,我们伟大的领袖和导师毛主席也于同年九月九日与我们永别了。全国人民沉浸在无限的悲痛之中。这时,王张江姚反党集团,迫不及待地妄图乘机篡夺党和国家的最高领导权。我国上空一时乌云翻滚,出现了建党、建国以来所罕见的严重局面。我们面临着党变修、国变色的现实危险。 相似文献
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in order to evaluate the seismic reliability of water distribution system and make rehabilitation decisions correspondingly, it is necessary to assess pipelines damage states and conduct functional analysis based on pipe leak- age model. When an earthquake occurred, the water distribution system kept serving with leakage. By adding a virtual node at the centre of the pipeline with leakage, an efficient approach to pressure-driven analysis was developed for simulating a variety of low relative scenarios, and a hydraulic leakage model was also built to perform hydraulic analy- sis of the water supply network with seismic damage. Then the mean-first-order-second-moment method was used to analyse the seismic serviceability of the water distribution system. According to the assessment analysis, pipes that were destroyed or in heavy leakage were isolated and repaired emergently, which improved the water supply capability of the network and would constitute the basis for enhancing seismic reliability of the system. The proposed approach to seismic reliability and rehabilitation decision analysis on water distribution system is demonstrated effective through a case study. 相似文献
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