乙醇盐酸合成冰毒

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 13:07:27
甲车队有80辆汽车,乙车队有50辆汽车,如果要使乙车队数比甲车队数的2.5倍多4辆,应从甲调多少车辆到乙车队?本题可设___________?这时列出的方程为___________? 甲队有汽车80辆,乙队有汽车48辆,要使两队的汽车一样多,求从甲队调到乙队的车辆数要用解方程那种方法 第19题怎么写,有算式的哦, Lene Marlin有什么好听的歌、? B15*$C$19是什么公式我在EXCEL中做题的时候遇到一道:已知总量和部分所占的百分比,要求部分的数值,我便宜告诉我要用B15*$C$19这个公式,有那位高人帮我讲讲啊! (a+b)*c*d公式怎样解 a∧2+c∧2能用公式解么?什么公式?如上 如果地球没有引力,那我们是不是会飞? 在中子星中有铁吗? 急解英语首字母填空The show f_____ their everyday lives,with stories about them falling in anf out of love,finding and l____ jobs,and dealing with parents,as well as becoming parents themselves.The c____ series has been shown all over the wor 英语首字母填空 1.Mickey had scored all right,but in the r_____ goal.2.All goals should be c____by a happy hug from Mickey.3.At last the silence was broken when Mickey,his face filled with j___,hugged my son tightly and shouted happily 一只不透明的口袋中放着若干个只红球的9只白球,这两种球除了颜色以外没有任何区别,当袋中的球搅匀后,蒙上眼睛从口袋中任意取出一个球.(1)如果取出红球的概率是4分之一,请问袋中共有多 帮我解一下英语题(是首字母填空)It is F____afternoon.S is over.The studeats of Class One are t____about their weekends.At weekends,Wang Bing likes r____story books.Sometimes he p____basketball w____his father.Mike ofter listens to mus 甲,乙,丙三个运动员跑步,甲8分钟跑一圈,乙4分钟跑一圈,丙6分钟跑一圈.三人同时同地出发,至少经过多少分钟后三人才能在原出发地相遇? 中子星的表面磁场是如何产生的? 1画地图要画什么,2世界地图指的是地形图还是政治地图 3其他区域地图指的是地形图还是政治地图,像一些矿产资源和小的城市都用标出来吗?求明白的人告诉我. 世界地图判断地图上的方向假如这是经纬网,则A在B的什么方向?A在C的什么方向? 帮我解决这几个按首字母填空,1.Holland is a E_______ country2.Our new English teacher can play many m______ instrument3.she has never been to an a____ park4there is an old f___ car in the museum5he can speak three f_____ language 首字母填空2道~今晚解决追分Today more and more people are s______ the sea.This is because the population of the Earth is increasing so fast that very s______ the land only will not be able to provide food for every body. One day Tom's donkey was ill,so he b_____a horse from an officer,it was a big,strong animal,and usually nobody rode it e____the officer.It tried to t____Tom o___,but he stayed o____it.Then it suddenly began to run away with him.He tried to turn it to 首字母填空.1.Animals are our friends,they can give us j_______.2.We s_____the world with plants and animals. 求 鬼泣4 圣歌Out of Darkness 歌词2B 不要插嘴 新闻报道中时间的词的作用如:2004年7月8日,谋市发生了地震.,这里的时间状语,起了什么作用? 函数y=sin(x+π/3) x属于[0,π),在区间___上是增函数 在什么区间上是减函数.顺便解释下x属于[0,π)有什么作用? 英语翻译lene marlin - maybe i`ll go - 琳恩玛莲You think youve made it everythings going so fineBut then appears someone who wannaTear you downWanna rip you off those few nice things you've foundWhen and if you hit the ground.Then its falling 已知函数y=sinωx在(-π/2,π/2)内是减函数,则A.0<ω≤1B.-1≤ω<0C.ω≥1D.ω≤-1 首字母填空, 一个平行四边形相邻两边的长分别是15厘米和20厘米,其中一条底面上的高是18厘米,这个平行四边形的面积是 It can speak like a man international 平行四边形的周长是60厘米,底是20厘米,另一条边上的高是15厘米,求平行四边形的面积. international trade