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有4个数,前三个数成等比,其和为14,后三个数成等差,其和为6,求此四个数 建筑中木工图纸字母H表示什么 4个数,前三个数成等差,它们的和为12,后三个数成等比,它们的和为19则这四个数的积为 危险作文sos 四只鹰,成语 请问AD转换器的参数sps（Samples Per Second）具体是什么含义? 最好形象些sps-每秒模数转换器采样数,是AD的数据输出速率吗?具体是什么意思?是不是每秒转换完成的数字信号的个数?有些规格上写 假如你是Helen,这儿有你家的一张照片,上面有你的父母和你8岁的弟弟Tom,请把他以书信的形式介绍给你的朋友Alice（50词左右）注：内容不要太复杂~初一的作文小学的水平即可~不要用大量初一 我是90 后读书征文作文,. [线性代数]求证|A+I|=0已知,并且,证明.百度的图片格式化有点问题，我直接用文本吧。问题是：AA^T=I，并|A|=-1，求证|A+I|=0 SOS!It'd like to go to a beautiful place.I think it would be Beijing.If I went there...不要复制和用翻译器的,最好正确率高一点,刷分的绕道! anyway ad. 求什么意思 线性代数：请教,若r(A) AnyWay测试产品的最主要特点是什么? anyway 有没有换话题的意思我看tvb的电视 里面有用anyway的对话 从语境上看 感觉有换话题的意思 可以用它来做换话题的单词么 英语：改正句子1. Mr White, which car was stolen yesterday, is very upset. 2. The watch which Susan bought it last week was very expensive. 3. We had to wait for an hour, which was very annoying. 4. The road on some buses were travelling sudden 英语改正句子1、Who did give Mina my email address?2 When did you get back from holiday?3 Who the book belongs to?4 Who did invent the computer?5 Who invited Mary to the party?6 Which train did they catch?7 What did happen at the meeting? 英语句子改正,That is a good news for jane2 Jimmy dont’ like go to school3 Sam must takes some medicine4 Jimmy have a toothache Must he sees a dentist?5 Mr.Williams are ill.Hemust stay in bed of another two days.6 Do jill has a temperature?7We 改正一句英语句子There are many people advocate technology develops in high speed is propitious people's life.(正确的改正但不改变意思）〔如区分出句子成分追＋30分〕 英语句子帮忙改正.oh man ; you sundenlly made a idear strike me,obviously i was so appreciative to you ；兄弟,你突然提的猜想 打入了我的脑海,明显 我对你是如此的感激, 甲乙两地相距1152千米,一列客车和一列货车同时从两地对开货车每小时行72千米比客车快2/7两车经过多少相遇. 为何要赞美主 甲乙两地相距1152千米,一列客车和一列货车同时从两地对开,货车每小时行72千米,比客车快 2/7,两车经过多少小时相遇? 以“啊,我的妈妈”为题,要写出自己对妈妈的赞美 武神塔八卦1到8号最大值（对了绝对赞） 改正英语句子the medical team is about to start immediately.这个句子是错误的!为什么?为什么要把immediately去掉? 货车和客车同时从甲乙两站相向而行,当货车走完全程的3／8时,正好和客车相遇.已知客车每小时行45千米,货车从甲站到乙站需24小时,求甲乙两站相距多少千米? 货车和客车同时从甲乙两站相向而行,当货车走完全程的3／8时,正好和客车相遇.已知客车每小时行110千米,货车从甲站到乙站需24小时,求甲乙两站相距多少千米? 用逮、抹、攥、怦怦、仗义、树杈、脸颊、寒战、自作主张、不可抗拒、形影不离造句 一个中国孩子的呼声但是世界还不太平,不少地区还弥漫着战争的硝烟,作恶的子弹还威胁着娇嫩的“和平之花”这句话中的“弥漫”是什么意思?这句话的意思是： 逮 抹 攥 怦怦 仗义 树杈 脸颊 寒战 自作主张 不可抗拒 形影不离造句 用逮,抹,攥,怦怦,仗义,脸颊,寒战,自作主张,不可抗拒,形影不离造句 求高手来解释英语句子,The vocabulary of Old English contains some fifty or sixty thousand words,.这句话我就不理解some做什么意思,既然有具体数字为什么还要用some呢?