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上面一个山字中间的竖出头在下面又做成一个倒山中间还有一横 这是个什么字? 12,阅读下面文章,判断正t误f 为什么 水至清则无鱼,人至察则无徒 为什么说水至清则无鱼,人至察则无徒呢? 已知函数f(x)= 2sinx-2√3cosx x属于R①求f(x)的最值、周期、振幅②求f(x)单调性 初一数学例二下面的练习[1][2] 练一练的1的（1）（2） 水至清则无鱼人至察则无徒中文翻译? 翻译《答客难》中句子“水至清则无鱼,人至察则无徒” 若方程组{ax+by=2 ,与{2x+3y=4 的解相同,则a=.,b=.ax-by=2 4x-5y= -6在此先谢谢您了. 我命不由天下句是什么 命不由天用英语怎么说 人命不由天主宰``对么?这是在我这年11月15号时想的```难到做人就要叹气吗? How fast can the fastest people swim?怎么回答 连词成句 people,100m,in,can,the,9.87,run,fastest,seconds（.） did,at,last,well,the,week,sportsdayall,the,school,students(.)in,first,was,team,place,dragon(.)you,your,enjoy,picnic,did(?)is,man’s，the,he,100-metre,first,race,in(.) 怎么写双重否定句 双重否定句怎嘛写? 什么是共轭体系 化学 共轭体系 大π健化学中有共轭体系一定会有大π健吗?有大π健一定是共轭效应导致的吗?共轭效应和大π健之间到底是什么关系啊? 怎样判断共轭体系的大小? 含有中药的诗句或对联比如 诗：张籍得《答鄱阳客诗》：江皋岁暮相逢地,黄叶霜前半夏枝.子夜吟诗向松桂,心中万事喜君知.再如风月前湖夜,轩窗半夏凉含有前湖和半夏这两种中药 初三(2)班 ``英语怎么讲? 已知A是正定矩阵,证明A2,A3……Am都是正定 矩阵题中指的是A的平方,三次方,……m次方.请说明解决思想 三条绳子怎么编成一条圆绳我用三条绳子编成了一条绳子,不是圆的,而是扁的,是用三条交叉替换的方法编的.怎么才能编出圆绳? 英译汉 快,在线等the worst way to miss someone is to be sitting right beside him knowing you can't have him 英译汉快1.How/Where did you com to know about this job?2.Do you have any friends or relatives in Singapore?3.What is your plan after two years?4.Are you aware/Do you know that you will have to pass the SET1 test?Are you confident that you will pa 英译汉,快他利用在医院的志愿服务很好的发挥了他这种爱好的用处. 快...We want our guides to have a goodeducation and to know something about the culture,customs,art,literature,and history of many countries besides their own. 英译汉 I am now drawing page 32 so I am sure you will soon catch up.all the pages you have received are happening right away after the end of book 1:in full day light,very sunny,white,strong light,bla bla bla (i'm sure i wrote that a thousand time 把线编成细绳子?把缝衣服的线编成细绳子谁会?急用! 2条颜色的手绳怎么编成一条绳 英语 写5句否定句牛津小学英语四年级再改为疑问句