共查询到20条相似文献，搜索用时 656 毫秒
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玻璃仪器是学生实验中经常用到的实验仪器，根据笔者的了解，笔者所在学校每年需购置玻璃仪器的经费约占购置经费的30％。仅次于实验试剂。为此．我们对实验室玻璃仪器损坏情况进行了深入的研究，提出切实可行的保护措施，以尽量减少玻璃仪器的损坏，从而缓解学校教学经费的紧张状况。为了能对同行有所借鉴，笔者现作如下叙述。 相似文献
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初中化学实验试剂自制（一）朱兵，陆欣当前我国有许多中学，特别是农村和边远地区的初中化学教学中，不但学生没有实验课，甚至教师也很少做演示实验．其原因是多方面的，其中实验经费开支大，试剂采购运输困难，是重要原因之一，为了能节约经费开支，获取实验试剂，我们... 相似文献
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“娃哈哈”饮料瓶在化学实验中的应用银川唐徕回中赵越当前，实验经费紧缺和实验条件的简陋，严重困扰着大多数学校的化学实验教学工作。尽管上级部门和全社会作了很大努力，但还不能从根本上改变实验经费长期短缺的事实。这就要求教师发挥主观能动性，创造条件，自制教具... 相似文献
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一、政府没有专项经费投入。课程改革困难重重 基础教育课程改革实验，需要巨大的经费支撑。但是，西部农村由于经济落后财政困难，没有对基础教育课程改革进行专项投人。义务教育阶段学校收取的杂费又非常低，财政又没有投人生均公用经费，因此，学校也没有经费投人到课程改革实验中去，给课改实验造成了极大的困难。 相似文献
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张季 《实验室研究与探索》2001,20(3):67-69
民族地区高校实验教学面临着师资、经费等困难，还存在着语言、教材等方面的问题，如何改变当前的实验教学现状，提高民族学生的实验水平是摆在实验工作者面前的重要任务，本文从实验经费的投入、师资队伍建设、教材内容改革及加强电化教学等方面介绍该校从事民族地区高校实验室工作情况。 相似文献
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对有机分析化学钠熔法实验进行相应的改进，便可以解决实验中必须敲碎硬质试管和难以溶化的问题，使实验操作方便，快捷，同时节约了大量实验经费，具有较高的实用价值。 相似文献
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实验教学在素质教育中占有重要位置，是培养学生的创新思维和动手能力的重要教学资源，配置优良的实验仪器和器材是提高实验教学质量的前提和基础。目前，农村中小学的仪器装备经费全部来自学生，来源极其有限。仪器装备经费与教育发展的需要很不相称。为了发挥学生自筹仪器经费的最大效益，我站试行了优化实验仪器配置的做法。 所谓优化实验仪器的配置，就是要花较少的钱从优配置实验仪器，这里的优不单指仪器个体质地优良，还包括它的适用性好、科学性强，也包括整体配置结构合理。为达到这一目标，我们从熟悉教学、仪器、厂家，到精心策… 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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正A One day a pig went to the stable(马棚)to see his good friend,an oldhorse,and was going to stay there forthenight.Night came and it was time forsleep.The pig went into the straw heap(稻草堆)and lay comfortably.A longtime passed,but the horse was stillstanding there and did not move.Thepig asked the horse why he did not go tosleep."Standing like this is the begin-ning ofsleeping,"answered the horse. 相似文献
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《今日中学生》2014,(9)
正1.Any fool can count the seeds in an apple.Only God can count all the apples in one seed.2.Happy families are all alike;every unhappy family is unhappy in its own way.3.Memories are the key not to the past,but to the future.4.Sometimes in the dark you see what you want to see.5.There is a great difference between 相似文献