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如图,矩形ABCD中,AD=5,AB=12,点M在AC上,点N在AB上,则BM+MN的最小值为?结果为1440\169,thankS 矩形ABCD中,AB=20cm,BC=10cm.若在AC,AB上各取一点M,N,使BM+MN的值最小.试求出这个值. 都是“1-无穷大分之无穷大” 和 “1+无穷大分之无穷大” 怎么极限就=1？ 解释并分析一下这个句子结构An angry reply signals that she is in inner conflict on his demand. 求助分析英语句子结构及其解释Consequently,we work hard at the task of saving time.We produce a steady flow of labor-saving devices; we communicate rapidly through faxes,phone calls or emails rather than through personal contacts,which th 请帮忙分析以下句子结构,American spy satellites looking for the radiation released from Soviet nuclear tests first detected gamma-ray bursts in 1967 but the details were kept classified until 1973. 写出同一个字在各句中的不同意思.道字分别在“能说会道、红道儿、道歉、头头是道、十道”里面分别是什么意思?白字分别在“明白、表白、白费、空白、发白”这些词里分别代表什么意 概率论和数理统计C（3,4）怎么算就是一个C,上下有数字的,好像关于排列组合之类,我是文科生不懂怎么算,求公式和简单易记方法 谁能帮我分析一下这句话的句子结构think of this lettuce as the first link in a garden food chain.开头是大写，就是一句句子：Think of this lettuce as the first link in a garden food chain.单独成句的，怎么看？ 关于一句句子结构分析it is hard to imagine what will happen if there is such an activity as a interview or meeting,yet all people concerned do not come on time.请教这一句话详细的结构分析.包括it形式主语的解释. 谁能帮我翻一下这句话 分析句子结构 He knew well that the quick-witted girl could claim none of that exemption from the penalties of captivity that was so cheerfully accorded to her feeble-minded sister 我想去.这句话的句子结构分析汉语语法知识，不是英语，怎么分析呀？ 如图所示,打台球时,用白球沿着虚线方向打黑球,已知入射角等于反射角,请问黑球经过一次反弹后是否会进入F号洞?请你利用尺规作图来判断(保留画图痕迹,不必证明).图不好看 对不住了 如图,打台球时,击打黑球后,黑球沿着图示箭头方向运动,已知入射角等于反射角,请问,黑球经过若干次反射后,最后进入几号孔?试画图说明. 打台球是,球的反射角与入射角有什么关系? 同一个字在每组句子里的意思有什么不同?挺 1935年5月,北上抗日的红军向大渡河挺进.这件条纹上衣挺好看的,妈妈舍不得丢掉. 要全解,救救我,一个字一个字的打的1.横眉冷对千夫指,俯首甘为孺子牛.《自嘲》2.其实地上本没有路,走的人多了,也便成了路.《故乡》3.我好像一只牛,吃的是草,挤出来的是奶,血.许广平《欣 已知数列{an}满足:a1=1,a(n+1)=3an/an+3,an不等于0.(n属于自然数)猜想{an}的通项公式 为什么极化能力越强,共价成分越大?极化能力越强,那么正离子吸引负离子电子能力越强,负离子的电子就向正离子偏移,那么为什么这样子就是共价成分增大? 为什么阴离子的极化率大于阳离子的极化率? 请把这句话的句子结构分析谢谢but some of its "nice" reputaion has fallen over the past thirty years with stories of rampant crime making headlines around the world请把with stories of rampant crime making headlines around the world 再 两首词每句最后一个字相同叫什么词? 古诗 望天门山中的每句最后一个字分别是：开、回、出、来,这四个字都是表示（?）的词语 不等式2-2(x-1)>0的正整数解是 英语翻译Among the biggest at the moment is “collateral management”:helping financial institutions and companies manage the collateral that they are owed or that regulators want them to post with central counterparties on their derivative tran 请从句子结构成分的角度分析这句话的意思?Computer software,or just software,is the collection of computer programs and related data that provide the instructions telling a computer what to do 帮忙分析下句子结构 还有 意思.But in my inimitable leave -it- on-the-field style that has won and lost me many abarrie,I declined ,pushed for a win,and ended up losing an absolute heartbreaker. 分析一句英语句子结构和意思the extent to which tv may or may not be to blame is a question that the study unanswered 2、03乘10的5次方是多少?9、03乘10的4次方是多少? 2、03乘10的5次方与9、02乘10的4次方差是多少? f(x) = lg[ (1-x) / (1+x) ] ,是奇函数吗?书上的答案是“是奇函数”,但是它的定义域不是关于原点对称的. 3.6*10的9次方是1.2*10的5次方的几倍