设蜡烛长度为常数Z,停电x分钟,有(Z-x/120)/2=Z-x/60,可得x=40
最新问答: 化简(a23b12)(−3a12b13)÷(13a16b56)的结果是______. We can see__ old bike __the tree. A.a; under B.the; at After five hours' drive,they reached____they thought was the could you please 的肯定与否定回答有哪几种?还有would mind的肯定与否定有哪几种 伤心的近义词和反义词到底是什么? 小学五年级写一篇观察日记,(关于植物的) what qualities do you think a person with a good heart shoul 设随机变量的分布律为P{X=n}=a(1/2)^n,n=(1,2,……)则a=(?) 定语从句中表语中by+which的问题? 一个修路队,26人六天修路468米,照这样计算,要用十五天完成四千五百米的修路任务,需要多少人? 2,6,5,10怎么算出24点 知道两个经纬度 求方位角 谁会这道题:This is _____ orange 英语句子选择It Was Einstein ___wrote and published his famous theo 水银与什么金属不能反应生成汞齐 由分子构成的物质A酒精B食盐C碳D高锰酸钾E氯气F氖气 a bird is knwon by its note,a man is known by his talk 如图中Ⅰ~Ⅳ说明了物质和离子通过细胞膜的转运,下列陈述中正确的是( ) The barbecue was ____and everybody was _____,chatting and re 关于地方时,下列说法正确的是:A北京上海的地方是相同