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高中物理题为什么静电力做正功? The worst way to miss someone is to be sitting right beside her knowing you can‘t have her. A .B .C 三点在同一直线上,AB:BC=1:2,B点位于A,B之间,在B处固定一电荷量为Q的点电荷,当在A处放一电荷量为+q的点电荷时,它所受的静电力为F；移去A处的电荷,在C处放一电荷量为-2q的点电荷,其所受 真空中有两个点电荷 其中a带正电电量为q1 固定在绝缘支架上 b带电量为q2用细线悬挂 两者静止并处于同一水平线 相距为r 静电力为k 求b收到的静电力 想提高一下自己的英语六级听力成绩,平时多听一下什么好呢?请朋友们推荐下这次考的六级成绩就亏在听力上面了 高中物理3-1静电力计算红圈的是怎么得到的? 一道英语单选We were all agreed that the cottage would ____ perfect holiday home for the family.为什么要用make而不用turn?比如说He turns teacher at last.这样的用法不适用此句?为什么可以说He turns teacher不能说the cott 英语单选一道After the six-party talk in Beijing,an agreement was reached _____ that North Korea would abandon ____nuclear weapons.A.stating; to develop B.stating; developing C.to state; to develop D.states,developing第二个是abandon+doing, 请问这句话从语法上看对不对?I appreciate that you give me a chance to learn about Chinese enterprises at a close distance.我不知道appreciate这样的用法对不对? 初中英语语法,所有的!重谢! 2008年全国2卷英语的单选和改错 英语翻译1.stand in a row___________________2.Do you often take with your friends ______ the phone?A:in B:on C:by D:from3.( )_____That's a picture in my bedroom.4.( )_____there is the ball under n..n.名词 因为试卷不清楚 1翻译 2单选 34 开学就高三了 ,想知道具体一点关于方法方面的. 8上英语 单选和改错一.单选1.I'm afraid he won't _______ me to the party.A.ask B.want C.call D.tell2.I want to work for my students _______.A.all my life B.whole me life C.my all life D.whole life3.Both of his parents died of illness so ____ 英语必修五 联系单选和单句改错 帮我看看这几句话对不对,语法上有没有错误Here is my idea about how a friend is like.If you tell him a secret ,never will he talks about it with anybody else.A friebd is always good listner when you need one. 这几句话的语法对不对?Tofu Pudding--- a soft,creamy soy custard,which is a popular snack in Asia.It is delicious either hot or cold.It both can be sweet or salt.Serve with green onion,sauce or just sugar. Tomorrow comes never. 初中英语语法练习题哪里找? 帮我看一下这个句子的语法对不对?1.This object applies points as hidden feature with its precondition proved.2.This object applies points as hidden feature with its precondition being proved.这两句那句对啊?说明下理由,这个wi 英语好的帮我看一下这句话在语法上对不对this directly contradicts what the reading passage indicates that dinosaurs are the warm-blooded animals. 英语!.对什么提问?how fast对什么提问?hou soon对?how often?英语!.对什么提问?how fast对什么提问?hou soon对?how often?how long?what time?when?how much time?how many times? 用How often和How soon提问有什么不同?哪个用在表示频率? ·快~翻译,小心火真是重要啊!______________it is to be careful with fire! 作文Be careful with fire 急!六年级作文 快点! 急 不要太深 语法要准确 It is important to be careful with 英语题,非常简单,求帮助,单选,能做多少做多少,谢谢QUQ 英语单选求大神检查 1.-Never mind if you didn't do it well for the first time.-_________________.A.Leave it to meB.That's very kind of youC.I won't give it upD.Just let me know2.My computer is very old.It needs ___________________.A.replacingB.to replaceC.replacedD.to b 人本主义与行为主义与精神分析的异同 行为主义和认知心理学有什么异同? 请用行为主义,精神分析主义,人本主义观点分析下面的例子.