金属析出的顺序

工具书26本,科技书176本,故事书380本.工具书每本36,科技书平均每本比工具书便宜18元,工具书26本,科技书176本,故事书380本.工具书每本36,科技书平均每本比工具书便宜18元,买科技书一共用了多少 杠杆原理的问题1、用测力计将长杆一端A微微抬离地面,测力计示数是F1；同理,用测力计将长杆的另一端B微微抬离地面,测力计示数是F2.则长杆的重力是(测力计保持竖直向上)( )A．(F1+F2)/2 B．F1+ 杠杆原理问题有一架不等臂天平,物体放在左盘,砝码放在右盘,砝码质量为m1,天平平衡,若把物体放在右盘,左盘放质量m2的砝码,天平也平衡,则物体的质量m为多少?注：要用m1,m2的代数式表示m.并 汉译英：第二天堂.该如何翻译成英语? we usually begin our school on the____ month ,September 第二天堂英语怎么说 《第二天堂》中的英语是什么意思 A:In .month do we begin our school life?B:.省略处填什么? september 1st is usually the____(begin)of a new term怎样填 如何正确的使用工具书?买的书太多不精 看着眼花 心里烦 “蛐蛐”这个词应该怎样朗读“蛐蛐”这个词朗读起来可有些别扭,是读“qu qu"不加儿化,还是都加儿化,还是后一个加儿化,读成”qu qu'er The new school term begins in September the first.改错 In a school year in England,_____ are two terms The first term is form September to january,and the_____ term is form February to june English _____begin to go to school when they are five years old.In England high shool students take only five ____s 杠杆最基本的原理是什么? This goddamn net speed对吗这个句子有没有错误 我想说这该死的网速! I'm leaving this city tomorrow.改为同义句.I'm（ ）（ ）（ ）this city tomorrow. I'm bailing this trailer tomorrow 现在谁知道孔子死了多长时间? 孔子什么时候出生?在哪儿出生?什么时候去世? tomorrow l want to leave this 1.We should with e________ when we saw Snow White walking to us.2.Our breakfast for tomorrow will _______（包括）milk,bread,eggs and porridge. School begins in September< in September划线>对划线部分提问 The new t_____ often begins in September in our country. 我校音乐节在九月二十日 填空：— — — at our school is September 20th速度，加分。。。 1.只有年满18岁的才能参加慈善毅行 2.这些钱是用来干嘛的?英文翻译 一首英文歌 开始的英文 听的是 when i ran from you i ran to you when i try to high i find you there I am going to read a book every day.(提问） 我每天将要写寒假作业怎么说? I am going to…every day. Hello!Boyd snd girls.Good morning.Nice to meet you.I am your english teacher.My name is Linda Miller. You can call me Miss Miller. I an from(来自) the USA.I am 22 years old. Now I am in Beijing ,China.I am happy to be your teacher.I hope(希望）y 不可数名词后面的动词需不需要用第三人称单数+s?例如discrimination这种不是物质的名词. 当你第一次和别人见面,不可以说:A.Nice to see you.B.Nice to meet you.C.Good morning.单选 Monday is our( )day.为什么填busiest 而不是the busiest?