AbstractWith the deepening of China's rural aging,the land-based family pension model in China'srural areas is facing greater difficulties.In order to meet the needs of the society...

AbstractProbability is an important part of junior high school mathematics curriculum,and it is also one of the key knowledge that the curriculum requires students tomaster.The pre...

目录引言.……1.问题的提出.……1.1相关概念的界定.........11.1.1符号与数学符号的界定.....1.1.2数感、符号感与符号意识的界定。。21.2国内外对符号感的研究现状......……·31.2.1国内对符号...

3.2财务管理问题分析..113.2.1筹资管理...」113.2.2投资管理...123.2.3成本管理.143.2.4应对措施....143.3瑞幸咖啡舞弊手段分析.3.3.1虚增销售收入..143.3.2虚增成本费用...153.3.3关联交易.…1...

AbstractThe survey is conducted in five collection areas in Jiaocheng City,namely,Qidu Town,feiluan Town,Yangzhong town,Sandu town and Nanji mountain,Ningde normal college'snew cam...

2材料与方法2.1仪器与试剂紫外可见吸收光谱由Shimadzu MultiSpec-l501光谱仪记录。荧光光谱的测量是在Perkin-Elmer LS55荧光光度计上进行（激发狭缝宽：10.0nm:发射狭缝宽：l5.0nm)。pH值的测量...

转化为非晶区的现象就越明显，同时对拉伸过程中的键长、键角、二面角、缠结度、取向度进行分析，揭示温度对拉伸过程中微观结构的影响。关键字：分子动力学模拟；半晶态聚乙烯：拉伸速率；结晶度...

Preparation of the water treatment chemical Poly AluminumChloride-Study on methods of improving basicity of Poly AluminumChloride making from the solid waste which contains aluminu...

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AbstractAs the beginning of learning mathematics,primary school mathematics is acornerstone for students to learn mathematics.If students want to learn mathematicswell,the efficien...