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完全燃烧1摩尔某饱和一元醇,生成67.2升(标准状况下)CO2和72克H2O,该醇的分子式为__________。
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质点做初速度为υ0的匀加速直线运动,它的位移为s时的速度为υ1,位移为2s时的速度为(??)
一定质量的理想气体,在保持压强不变的过程中,放出了热量,则气体的(??)
为防止污染环境,工业上利用氨氧化法制HN03,其尾气用__________吸收;工业上利用接触法制硫酸,其尾气用__________吸收。
光在某种玻璃中的速度是×l08 m/s,要使光由空气射入这种玻璃的折射光线与反射光线之间成90°角,则入射角是( )
用长为2的细绳系住一个质量为m的小球,使它在竖直平面内做变速圆周运动,运动一周后小球的动能增加了E,重力对小球做功为AG,绳子拉力对小球做功为Ar,则(??)
下列物质中,不能用于漂白或脱色的是( )
A溶液的pH为10,B溶液的c(H+)=10-6 mol/L,C溶液的c(OH-)=10-10 mol/L,则它们的酸性由强到弱的排列顺序为(??)
带正电的点电荷Q产生的电场中的一根电场线上有A和B两点.现在分别把质子和a粒子先后放在A点,使它们由静止开始运动经过8点,其速度图像如图所示,则两个粒子经过B点时速率之比υp:υa等于(??)
下列有关实验用品的使用或实验操作的叙述正确的是(??)
两分子之间的距离为r0时,分子间的作用力为零,如果距离变为r,则( )
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1924年11月,应冯玉祥邀请,孙中山北上并发表《北上宣言》,沿途宣传()
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3. The brand (商标) name puts a face on every company. Names like McDonald's, GM, Apple, Intel, and a large number of others have long become very popular. They've also given customers a point of reference when thinking about a company. Good brand names might help companies avoid heavy costs and bring them greater profits.Usually companies create names that are easy to learn and remember. Firstly, the name should create interest. Rhymes (押韵) and humor are some ways to gain interest, but there are others as well. Think about your customers and what would interest them. Secondly, the name should present a picture or image. People remember them most because the name is stored in pictures and words. Thirdly, the name should be meaningful. It can be done with lots of advertising, but names that are themselves more meaningful to customers are more easily stored in memory. More important, the name should have meaningful associations that show the benefits customers want. Then the name should have some emotion. Emotional associations are easier to learn and remember. The Love Boat, for instance, is very easy to remember. Finally, the name should be simple so that it is easier to learn and remember.31. Why does the passage mention the brand names such as McDonald's and GM in the first paragraph?____ A. To show that a good brand name is significant for a company. B. To tell readers that they are important and popular terms. C. To introduce some well-known brand names to readers. D. To explain why those companies are successful.
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展览会的特点有
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当代资本主义所发生的许多新变化属于
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施工项目质量控制的原则包括()。
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