简介：摘要根据动力学原理,对汽车在弯坡路段上的运行状态及行车安全性进行了分析。认为弯坡路段之所以成为车辆运行安全隐患的原因是由于设计速度与车辆实际运行速度不协调造成的,在弯坡路段的线形组合设计中应根据车辆的实际运行速度选用技术指标。

简介：在近年多次高考改革后，数学已然成为高考中区分度越来越高的科目，在高考数学中圆锥曲线相关的知识是高考数学中最为关键的构成。圆锥曲线相关知识点不仅仅是课改之后高中数学平面解析几何的重要组成部分，并且在学习和讨论圆锥曲线的相关题目时还大量引入了直线方程的相关内容，对于高中数学学习还有着承前启后的重要作用和意义。本文就对圆锥曲线复习策略进行详细的研究。

简介：ＮｏＩｍｐａｓｅｆｏｒＣｈｉｎａ’ｓＤｅｖｅｌｏｐｍｅｎｔＪｉａｎＳｏｎｇＴｏｄａｙ，Ｃｈｉｎａｈａｓａｍｏｒｅｔｈａｎ１．２ｂｉｌｉｏｎｐｅｏｐｌｅ，ａｂｏｕｔ２２％ｏｆｔｈｅｗｏｒｌｄ’ｓｔｏｔａｌ，ｗｈｏａｒｅｆｅｄｗｉｔｈｔｈｅｇｒａｉｎｐｒ...

简介：ＩｎｃｒｅａｓｉｎｇｌｙａＷｏｍａｎ＇ｓＤｉｓｅａｓｅ￥ＺｈａｎｇＫｏｎｇｌａｉａｎｄＷａｎｇＹｉｎｇＡＩＤＳｉｓａｄｅａｄｌｙｓｅｘｕａｌｌｙｔｒａｎｓｍｉｔｔｅｄｄｉｓｅａｓｅｃａｕｓｅｄｂｙｔｈｅｈｕｍａｎｉｍｍｕｎｏ－ｄｅｆｉｃｉｅｎｃｙｖｉ...

简介：ＣＨＩＮＡ＇ＳＡＧＥＮＤＡ２１ＣＨＩＮＡ＇ＳＡＧＥＮＤＡ２１ＷｈｉｔｅＰａｐｅｒｏｎＣｈｉｎａ＇ｓＰｏｐｕｌａｔｉｏｎ，ＥｎｖｉｒｏｎｍｅｎｔａｎｄＤｅｖｅｌｏｐｍｅｎｔｉｎｔｈｅ２１ｓｔＣｅｎｔｕｒｙＴｈｅｆｏｌｌｏｗｉｎｇａｒｅｅｘｃｅｒｐｔｓｆ...

简介：Ｔｉｂｅｔ’ｓＰｏｐｕｌａｔｉｏｎａｎｄＴｉｂｅｔａｎＰｏｐｕｌａｔｉｏｎＧｕｏＤａｐｉｎｇＴｈｅＴｉｂｅｔａｎｎａｔｉｏｎａｌｉｔｙ，ｏｎｅｏｆＣｈｉｎａ’ｓｍａｊｏｒｅｔｈｎｉｃｇｒｏｕｐｓ，ｈａｓｉｎｈａｂｉｔｅｄｏｎｔｈｅＱｉｎｇｈａｉＴｉ...

简介：ＴａｓｋｓｆｏｒＣｈｉｎａ’ｓＡｇｉｎｇＰｒｏｇｒａｍｍｅＴｈｅｏｂｊｅｃｔｉｖｅｓｏｆＣｈｉｎａ’ｓａｇｉｎｇｐｒｏｇｒａｍｍｅａｒｅｔｏ“ｐｒｏｖｉｄｅｅｃｏｎｏｍｉｃｓｕｐｐｏｒｔ，ｍｅｄｉｃａｌａｎｄｈｅａｌｔｈｃａｒｅｓｅｒｖｉｃｅｓａｎｄ...

简介：China'smalemarriagesqueezeanditspotentialconsequencehaveattractedmuchattentionandgivenrisetodebate,butmoststudiescontributethissqueezetosexstructureandneglecttheagestructure,andsomestudiesuseflawedmethodtostudythecontributionofagestructureinthissqueeze.InthispaperwedevelopanindicatorofSpousalSexRatio(SSR)andapplyadecompositionmethodintoageandsexstructure.BasedonthedatafromChina's2010censusandprojection,wepredictthatfrom2010to2020,theagestructurewillbethedominantfactorforChina'smalemarriagesqueeze,andfrom2020to2034,thecontributionofsexstructurewillbeincreasing,whereasthatofagestructurewillbedecreasing.From2034to2045,China'smalemarriagesqueezewillmainlyfromimbalancedsexstructure,andtheagestructurewillcontributelittleornegativelytoChina'smalemarriagesqueeze.

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简介：Withalargeworking-agepopulationwitharelativelylowaveragelevelofeducation,Chinaisfacingseverechallengesinemployment.Theseinclude:thecontradictionbetweenworkforcesupplyanddemand;irrationalemploymentstructure;increasingpressureontheurbanlabormarket;

简介：ＣＯＮＳＴＩＴＵＴＩＯＮＯＦＴＨＥＰＥＯＰＬＥ＇ＳＲＥＰＵＢＬＩＣＯＦＣＨＩＮＡＣＯＮＳＴＩＴＵＴＩＯＮＯＦＴＨＥＰＥＯＰＬＥ＇ＳＲＥＰＵＢＬＩＣＯＦＣＨＩＮＡ（Ｄｅｃｅｍｂｅｒ４，１９８２）Ａｒｔｉｃｌｅ２５ＴｈｅＳｔａｔｅｐｒｏｍｏｔｅｓｆａｍｉ...

简介：Ｔｉｂｅｔ′ｓＰｏｐｕｌａｔｉｏｎ：ＰａｓｔａｎｄＰｒｅｓｅｎｔＴｕｄｅｎｇＡｆｔｅｒＴｉｂｅｔｗａｓｃｏｎｑｕｅｒｅｄｂｙｔｈｅＭｏｎｇｏｌｓｗｈｏｆｏｕｎｄｅｄｔｈｅＹｕａｎＤｙｎａｓｔｙ（ｉｎｔｈｅ１３ｔｈｃｅｎｔｕｒｙ），ｉｔｈａｓｓｉｎｃｅ...

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简介：ＣｈｏｎｇｑｉｎｇＢｅｃｏｍｅｓＣｈｉｎａ’ｓＮｅｗＭｕｎｉｃｉｐａｌｉｔｙＴｈｅｅｓｔａｂｌｉｓｈｍｅｎｔｏｆＣｈｏｎｇｑｉｎｇＭｕｎｉｃｉｐａｌｉｔｙｗａｓｄｅｃｌａｒｅｄｏｎＭａｒｃｈ１４，１９９７，ｗｈｅｎｔｈｅＦｉｆｔｈＳｅｓｉｏｎｏｆｔ...

简介：OnNovember12,2013,theThirdPlenarySessionofthe18thCentralCommitteeoftheCommunistPartyofChina(CPC)officiallyissuedDecisiononSomeMajorIssuesConcerningComprehensivelyDeepeningtheReform,whichunderscoredtheimportanceofpromotingurbanizationofmigrantruralpopulation(transformingeligibleruralmigrants

简介：ｔａｔｉｓｔｉｃｓｏｎＣｈｉｎａ’ｓ１９９６ＳｏｃｉａｌＤｅｖｅｌｏｐｍｅｎｔＡｌａｒｇｅｓｉｚｅｓｅｗａｇｅｄｉｓｐｏｓａｌｐｌａｎｔｉｎＦｕｚｈｏｕＣｉｔｙ，ＦｕｊｉａｎＰｒｏｖｉｎｃｅ．ＥｄｕｃａｔｉｏｎａｌＤｅｖｅｌｏｐｍｅｎｔＣｈｉｎａｈ...

简介：ＩｎｔｅｇｒａｔｉｏｎｏｆＰｏｐｕｌａｔｉｏｎｗｉｔｈＤｅｖｅｌｏｐｍｅｎｔ：Ｃｈｉｎａ＇ｓＰｒａｃｔｉｃｅＩｎｔｅｇｒａｔｉｏｎｏｆＰｏｐｕｌａｔｉｏｎｗｉｔｈＤｅｖｅｌｏｐｍｅｎｔ：Ｃｈｉｎａ＇ｓＰｒａｃｔｉｃｅＸｉａｏＺｉｌｉ（Ｄｉｒｅｃｔｏｒ...

简介：ＬＡＷＯＦＴＨＥＰＥＯＰＬＥ＇ＳＲＥＰＵＢＬＩＣＯＦＣＨＩＮＡＯＮＴＨＥＰＲＯＴＥＣＴＩＯＮＯＦＲＩＧＨＴＳＡＮＤＩＮＴＥＲＥＳＴＳＯＦＷＯＭＥＮＬＡＷＯＦＴＨＥＰＥＯＰＬＥ＇ＳＲＥＰＵＢＬＩＣＯＦＣＨＩＮＡＯＮＴＨＥＰＲＯＴＥＣＴＩＯＮＯＦＲＩＧＨ...

简介：Ｃｈｉｎａ’ｓＴｉｂｅｔａｎＰｏｐｕｌａｔｉｏｎａｎｄＰｏｐｕｌａｔｉｏｎｉｎＴｉｂｅｔＧｕｏＤａｐｉｎｇ（ＣｈｉｎａＰｏｐｕｌａｔｉｏｎｉｎｆｏｒｍａｔｉｏｎａｎｄＲｅｓｅａｒｃｈＣｅｎｔｒｅ）ＴｈｅＴｉｂｅｔ（Ｘｉｚａｎｇ）ＡｕｔｏｎｏｍｏｕｓＲ...

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