初中滑轮组的计算公式

Liu Xiang came third ___the 110-meter-hurdle race last month in Shanghai.A.in B.from C.acrossD.through Liu Xiang came third __the 110-meter -hurdle race last month in Shanghai. Liuxiang is one of the most famous running athletes.He is good at running and 110 meters hurdles.翻译成中文 翻译you may depend upon it I will make you a man for life. The blind man'swork opened our eyes and pleased our hearts,which also made his life busier.翻译 英语翻译这是一个谚语. 英语翻译Life is what we make it,always has been,and always will be. 谁能帮我翻译下面的英语,女朋友发给我的看不懂．yes i like you but i dont know if i can love someone who doesn't know how to love and appreciate feelings of other.. 英语翻译 英语六级分数线多少? YOU are the first person that I want to ask you are the first girl that i want merry in the world.you are the last girl that i want merry in the world. My dear You are the first person that I want to see. 我应该现在离开吗?（汉译英） Am I ____ _____ leave now? 新东方张红岩IELTS词以类记mp3求下载!我的碟搞丢了~ 求 张红岩IELTS词汇词以类记MP3.邮箱 wodyx1239@163.com .谢谢, 谁有 雅思 词以类记 张红岩 的PDF和MP3发给我 英语翻译leave me along~ 29.如图所示,abcd是一个正方形盒子．cd边的中点有一个小孔e．盒子中有沿ad方向的匀强电场．一个质量为m带电粒子从a处的小孔沿ab方向以初速度v0射入盒内,并恰好从e处的小孔射出．求：⑴该 1、如图所示,人的质量为60kg,物体的质量为40kg,人用100N的水平力拉绳时,人与物体保持相对静止,而物体和人恰能做匀速直线运动,则人受到的摩擦力为_______N,物体和支持面的动摩擦因数为_______.( 答案是C 不懂 张强同学利用如图16所示的滑轮组将货物运送到楼上,图中每个滑轮等重,不计绳重和摩擦.如果所送货物重G从200N开始逐渐增加,直到绳子被拉断.每次均匀速拉动绳子,且提升同 英语翻译如题我是人,不是神 Man,You are a 英语翻译What effective nonverbal signal would you suggest Lenson send during the interview given the profiles of the two individuals Jenson is to meet. 用英语写五句关于猫的短文.（五年级水平） “班主任寄语”用英文怎么说? 初三英语填空1～11 如何清除书上的记号笔印 如何擦去玻璃上的记号笔印房子装修,玻璃上有记号笔,怎么擦去,急, 2007年4月18日全国第6次列车大提速,国产动车组开始正式投入营运,小表是空调洞车组D517次列车从北京到北戴河的时刻表车次 序号 车站 时刻 到达时间 开车时间 公里数D517 1 北京 当日 ---------- I feel like I am a poor man and you are the queen翻译