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一首英文歌词里有i like to make myself belive,是个男生唱的,像是个组合 如图,直三棱柱ABC–A1B1C1中,D,E分别是AB,BB1的中点(1)证明BC1//平面A1CD(2)设AA1=AC=CB=2,AB=2√2,求三棱柱C–A1DE的体积 如图,在直三棱柱ABC-A1B1C1中,AC=3,BC=4,AB=5,AA1=4,点D是AB的中点1求证：AC⊥BC12求证：AC1‖ 平面CDB1在《暑假新时空》高一数学第50页第11题 英语翻译 英文翻译open the floor to questions 英语翻译这句话的前后文如下：public property is frequently distinguished from common property,which is owned by no one in particular and which may be freely enjoyed by all;of this kind are the atmospheric air and the open sea. 英语翻译：证券英语中,the offering of stocks 英语翻译 open my hands,keep everything in my mind.happy spring festival`` 三角形ABC,O为BC中点,过O直线交直线AB,AC于M,N若向量AB=m向量*AM,向量AC=n*向量AN,则m+n的值 在三角形ABC中,点O是BC的中点,过点O的直线分别交直线AB,AC不同的两点M,N若向量AB等于m乘于向量AM向量AC等于m乘于向量AN,则m+n的值为多少? 如图所示,在△ABC中,点O是BC的中点.过点O的直线分别角直线AB,AC于不同的两点M,N,若 向量AB=m向量AM,向在这个地址http://wenwen.soso.com/z/q209355066.htm?w=%C8%E7%CD%BC+%D4%DA%C8%FD%BD%C7%D0%CEABC%D6%D0+%B5%E3O%CA%C7BC%D 如图在等腰直角三角形ABC中,点D是边BC的中点,过点D的直线分别交AB,AC于点M,N若向量AM＝x向量AB,向量AN＝y向量AC,x＞0,y＞0,则2x＋4y的最小值是 在三角形ABC中,点O是BC的中点,过点O的直线交AB,AC于不同的两点M,N.若AB向量等于m倍AM,AC向量等于n倍AB向量等于m倍AM,AC向量等于n倍AN.求m+n的值【向量法解答】向量AO=AB+BO=AB+1/2BC= AB+1/2*(AC-AB)= 1/2*（A 英语翻译regardless of the variablity of these procedures,however,one party assumes management responsibility for the field construction process 填幻方 都得3根据图（1）中给出的数,对照完成图（2）；试着自己找出9个不同的数,完成图（3）【由于没有图三所以麻烦你们自己发一个】 英语翻译Dead loads are defined as fixed,nonmovable loads of a permanent nature which can be divided into two categories:(1) self-weight of the structure and (2) superimposed dead loads.The self-weight of the structure includes all beams,girders,c on-the-road 英语翻译Engineering materialsTypes of materials Materials may be grouped inseveral ways.Scientists often classify materials by their stste:solid,liguid,or gas ,they also separate them into organic and inorganic materials.For industrial purposes , 英语翻译VI.Volume,velocity and integrity testing will be completed as specified in SOP #XXX,“Certification of HEPA Filters in HVAC System”.VII.Pressure testing will be completed as specified in SOP #XXX,"Routine Monitoring Program Pressure Di off-the-job training rebate是什么意思 什么是On-the-job 英语翻译请高手把这段工程英语,Abstract:The implementation of projects is an important stage in the life cycle of major construction projects.The economic goal of projects entirely come true through cost control.so it is particularly impo 英语翻译Analysis to the Cost Control of Engineering Project,At present,China's market economic system has been gradually established and is developing rapidly.Large and medium-sized state-owned enterprises are facing mechanisms to make them more 翻译句子：we focus on what we want instead of what we have If you___yourself to the job at hand ,you will soon finish it.A.apply B.request C.focus D.use为什么选A?at hand怎么解释.分析一下句子吧.其中隐藏了什么词组么? focus on怎么译 they just focus on whether you will be able to cover this job or not.神马意思.尤其是 cover这个词 英语翻译类似以劳动的内在或外在（？）的什么关系来翻译的话？ 英语翻译 英语翻译是否可以翻译成人事工作？ 英语翻译orientation dates are to be confirmed for 2014 and will be forwarded to you at a later date.it's important that you arrive at la trobe university in time to attend your enrolment session and university orientation at your campus. 3a是表示3个a相乘还是3个a相加?