一根圆柱形钢材长2CM,把它等分成4段后,表面积增加了18.84平方DM%

别人说自己说话挺牛的啥意思? 分别用2克的镁铝锌铁与足量的稀硫酸反应,产生氢气各多少克要有具体解题方案, 刚字用五笔怎么写 用五笔怎么写 五笔那怎么写 四张扑克,三张红桃一张梅花,任取两张,如果都是红桃甲赢,一张红桃一张梅花已赢,是否公平? 对象说,我是牛,她是地.什么意思? 有一根长1m的铁丝,怎样用它围成一个面积为0.06m²的长方形? 直线AB、CD相交于点O,OE平分∠BOD,OF平分∠AOD,∠BOC∶∠DOE=6∶1,求：（1）∠DOE的大小；（2）∠COF的大小. 有4张扑克牌,一张红桃5,一张红桃7,一张梅花5,一张梅花7.从中任取2张,这两张扑克牌花色相同的可能性大,还是数字相同的可能性大? 有三张扑克牌,分别是梅花5,红桃7和黑桃2,从三张中任意取出两张,它们的差是（ ）、（有三张扑克牌,分别是梅花5,红桃7和黑桃2,从三张中任意取出两张,它们的差是（ ）、（ ）、（ ） 谁能帮忙翻译一下! 有谁能帮我翻译一下谢谢 一个多边形的内角和是720度,则这个三角形的边数为 英语翻译Dear incoming exchange students,First of all,I would like to send you my warmest greetings from Kookmin University in Seoul,Korea.Our university would like to propose a great opportunity (Global Korea Scholarship (GKS)) to you.The scholar 放荡的繁体字怎样写 玩世不恭的繁体字? 玩世不恭 繁体字样 姐妹网名可爱的有繁体字最好5姐妹!还有炫舞姐妹名,伴侣名!谢谢了! 初一相交线数学题,急~点P是直线l上的一点,AP垂直于l,BP垂直于l,则AP与BP的关系是?理论依据为? 乡字是什么结构 乡字加什么旁组成什么字 乡字是属于什么结构的? 乡是什么结构的字,哪些字和它是一类的 《追梦》这篇作文的开头, 三个英语习题1.She has bought__for the living room.A.plenty of new furniture B.some new furniture C.a number of new furniture D.a few new furniture 这个题选什么?其他三个选项哪里错了?2.Didn't you remember__the letter on your way h 1.which one would you like better?( ).would you show me ( A None,the other B nothing ,another CNo any,the other DNeither,another2.A lot of wokers have died in the accidents( )will lose their lives if further safely measures are not taken right awayA: 三个英文题1.Laughter burst out ( )the audience when the lecturer made a joker为什么填from among,不填from2.Lee contributed 50 dollars,but he wishes he could contribute（）A.another fifty B.more fifty dollars 讲解下3.He could hardly kee 1.the idea of "sunshine sport"makes it possible for kids to choose and do （　B　　）about sport as long as one hour every dayA.pleasant somethingB.anything pleasantC.nothing pleasant___anything,不是用于否定句吗,这个怎么选B2.it'S a 拦路蛇是什么意思 老蛇拦路是什么意思 做梦梦到蛇拦路是什么?