田间棉籽样本中苯肽胺酸残留试验
2.7.4数据表格.92.8检测方法的有效性评价103田间棉籽样本中苯肽胺酸残留试验113.1试验时间..113.2试验地点3.2.1土壤类型.113.2.2气候条件.123.2.3前茬作物、农药使用历史.143.3供试作物及品种.1...
我国的食品安全问题及其对策
摘要众所周知，民以食为天，因此食品关系到人们的身体健康，事关千千万万人的生命安全。当今人类已经进入了一个崭新时代，不仅具有较高的生产力、发达的科技文化，而且经济繁荣昌盛、信息交流频...
以甘蔗为原料年产10万吨生物乙醇工厂设计
AbstractBioethanol is a new type of clean energy with sustainable development.It can beused as the oxygenator and blending agent of gasoline.When it is mixed withgasoline,it can ef...
美的集团股份有限公司偿债能力分析
AbstractThe solvency of companies has always been an issue of great interest.In recent years,withthe development and improvement of modern enterprises,the company's informationrequ...
二连浩特口岸经济发展问题及对策
AbstractErenhot port is an important land port between China and Mongolia.Its development is ofgreat significance to promote regional economic cooperation and strengthen the exchan...
初中数学教学课堂设计与学生注意力关联度初探
录目引言1绪论.…1.1研究背景…1.1.1国内研究现状...1.1.2国外研究现状…21.2研究目的、意义和内容.21.2.1研究目的…21.2.2研究意义….31.2.3研究内容...32注意力的相关概念.32.1注意力.32.2有...
勾股定理的教学—探究与应用衡重
Pythagorean theorem is a shining pearl in geometry,which is called 'the basis of geometrystone'.For the teaching of Pythagorean theorem,teachers should pay attention to the inquiry...
国家教师资格考试中数学学科知识考点分析（高中）
The Analysis of the Testing Points of Mathematics in the National TeacherQualification Examination (Senior School)Abstract The function of the teacher qualification examination is ...
林浅探高中数学任意角的三角函数的教学设计
AbstractTrigonometric function is an important content of senior high schoolmathematics and that also is an important examination point of college entranceexamination.What the most...
融合STEM教育的高中数学活动教学研究
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