1与任何数相乘都得

混蛋一词出自哪里? 甲完成一项工作的5分之1要用4天,乙完成这项工作的5分之2要用10天.甲和乙单独做各需要几天完成?我知道这样做甲单独需要 1÷1/5x4=20天乙单独需要 1÷2/5x10=25天甲乙合作 需要 1÷(1/20+1/25)=1÷9/100= 修一段公路,每天修0.4km,24天可以修完.如果每天多修0.2km,15天能修完这段公路吗?用两种方法解答.用两种方法解答. 武汉市黄陂区李集镇新高村用英语怎么说? 晾衣架上的钢丝绳如何安装到转角器上 请问升降晾衣架万能转角器不与顶坐成锐角三角形可以安装? 一个圆形的晾衣架,上面等距离安装了8个衣架.晾衣架的半径是20cm,每相邻两个衣架间的距离大约是多少厘米? a small 在I can do nothing.I'm just a small photo here.的环境中 鸭妈妈救小鸭的以第一人称手法 依据各沉淀溶度积由小到大的顺序依次生成各种沉淀为什么.. 某混合溶液中KBr,KCl,KI的浓度均为0.01mol/l,向该溶液中逐渐加入0.01mol/l的AgNO3溶液,前后产生沉淀的顺序是?为什么? bule是谁啊? 如图所示,某人到岛上去探宝,从A处登陆后先往东走8km,又往北走2km,遇到障碍后又往西走3km,再折回北方走到6km处往东一拐,仅走1km就找到宝藏.登陆点A与宝藏埋藏点B之间的距离是多少? green是什么颜色? 英语：NANCY,Please clarify that你所说的”绿色”是指我们原有的“dark green"还是指新的颜色? green是什么颜色? black+( )=dark green 填颜色 Look at a person,the night is so beautiful!帮我看看,这句话有没有什么问题!他说她的原意是：一个人仰望，也是那么的美！ The moon light is coming in()the windows and the moon seems quite beautiful.A.acrossB.overC.fromD.through he look up at the sky and said,look at that beautiful moon,john翻译 how can we ask the moon to constantly shine so beautiful night after night if we as humans can not find it in ourselves to do the same?Why can't we find what it takes to remain illuminating creatures when we bear witness time after time of the glorio Across the universe的歌词中文版求翻译. 一批试制产品,合格的有120件,不合格的有30件,合格率是80%. 某间车把加工零件的任务按3:5:4分配给甲,乙,丙三个生产小组.已知乙组分得2050个,其他两个组各分得多少个 1.Yesterday, they ____(go) to the market and ____(buy) a lot of vegetables and fruit.2.We must ____ (get) on the bus one by one.WE mustn't ____ (push) others.3.What will you ____(do) next week? I ____(play) basketball and ____(take)part in a piano co They sell fruit and vegetables at a low price in the market.(改为同义句)Fruit and vegetables are ___ ___ in the market. they were carrying several（ b——） of fruit to the market.b开头的用什么单词? They can look and see.They can blink and cry.They are useful for you and me.They are____ 什么动物住在洞穴里 I have no hands and arms,But only legs and feet.I’m with you at your meals,But never can I eat.（打一家具） 求助across 在句中的意义The American fall is 1,000 feet across and 193 feet high. the river is half a mile across 这句话又语病吗 怎么翻译 across 词性是什么