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国庆节通过乍浦跨海大桥的大客车与中巴的数量之比为5：6,而中巴与小汽车之比为4：7,这三种车辆共收费10875元,每辆大客车的收费为15元,中巴为10元,小轿车为5元.求这三种车各通过的多少辆? 怎样提高小学数学? 写出2个比6分之1小比5分之1大的最简真分数要过程,怎么想的写出2个比6分之1大比5分之1小的最简真分数 直角三角形两直角边之和比斜边大4 较长的直角边比较短的直角边大7 设直角边长X 可列出方程是?一个长30C 宽20CM的长方形纸板 在四角截去四个同样大小的正方形 然后沿折痕折叠作成一个无 （用倒序相加法） f(x)=4x/4^x+2求s=f(1/2002)+f(2/2002).+f(2001/2002)急....... f(x)=9^x/(9^x+3),求f(1/2000)+f(2/2000)+……+f(1999/2000) 2.若f(x+y)=f(x)*f(y),f(1)=2,则f(2)/f(1)+f(4)/f(3)+f(6)/f(5)+.+f(2000)/f(2001)的值是 What is the level of difficulty of Train Simulator 已知函数f(x)=4x^2-7 / 2-xf(x)=(4X^2-7）/（2-x),x属于[0,1],1.求单调区间和值域2.设a》1,函数g(x)=x^2-3a^2x-2a,x属于[0,1],若对于任意x1属于[0,1],总存在x0属于[0,1],使得g(x0)=f(x1)成立,求a的取值范围.第一问我 what is the percentage of service level mentioned大家觉得这句话是在问一个percentage,还是在问percentage of service level是什麼东西? 英语翻译打错了intimacy in the control of 和under the control of和in control of之间的区别和日常用法 【在某人的控制下】是【under control of sb.】还是【under the control of sb.】 under control,in control (of)的区别 The business is said to be ＿ of a director.A under the control B under control C in control选什么?为什么 school,turn,at,the,then,go,right,straight连词成句 连词成句：school,turn,at,the,then,go,right,straight school,turn,at,the,then,go,right,straight怎么连成一句? 英语高手帮我翻译一下这篇文章《Logistics information systems:The strategic role of top management》 英语翻译Management information systems Transformation of data into information has different meanings at different levels of an organization.J.W.Marriott,Jr.,the chief executive officer of the Marriott Corporation,once recalled,"I asked for some 英语翻译Predictive modelling of habitat distribution in geographic information systems involved the modelling of focal species occurrences based on empirical data,incorporated in a landscape ecological decision support system.完整的 英语翻译according to the Canadian Institute for Health Information,prescription drug costs have risen since 1997 at twice the rate of overall health-case spending.1.翻译2．分析结构 hi is totally unreliable as a source of information谁帮我翻译下,特别是as a source of information 一年期定期储蓄利率为百分之2.25,所的利息要交税百分之20的利息税,已知某储蓄户有一笔一年期定期储蓄到期那税后实得利息450元,问该用户存入本金多少? 五年级下学期计算题 一年定期储蓄年利率2.25%,所得利息要缴纳5%利息税.李老师有一笔一年期定期储蓄到期纳税后所得利息405元,问李老师存入多少本金?用一元一次方程解. the,english,students,are,from,an,school(.)连词成句回答正确奖5分 the having lesson students an are English连词成句 连词成句 go Friday from to the school Monday student to (.) go friday to from the school Monday students to 连词成句 用长为10m的铝合金条制成窗框,设窗框的高为x米,窗户的透光面积为y平方米求y关于x的函数解析式.（图就是上面一个小长方形,下面一个大长方形） 一个两位数 十位数字为x 两个数位上的和为9 则这个两位数可表示为＿＿?