积载因数

高中使用什么奥林匹克竞赛书籍好 可以拜托你帮我推荐几本高中数学奥赛的书吗?谢谢! 已知x²=5,不解方程求代数式x³-3x²-5x+21的值 how is the young man回答同上..随便写回答..,但要正确.. ------How is the young man?-------________________ How is the young man? 如果关于x的一元二次方程 kx²+4x-3=0 有两个不相等的实数根,求k的取值范围.一讲解我就乱了 求高二新世纪版英语伴你成长Final Examination（B）的全部答案! what animal do you think is e_____?a Dolphin is. what is the biggest animal on the earth?is an elephant much smller than a blue?_______________________________what's your favourite event______________________which fish can swim faster than most boats?___________________________________how can peopl What is the biggest animal on earth? 翻译一下2013版英语八年级下册第六单元42页的2d谢了 这个热化学方程式怎么写(1)12g Mg(S)在氧气中完全燃烧生成MgO(S)放出247.12KJ热量(2)0.5molH2(G)与0.5mol I2(G)反应生成HI(G)吸收25.9KJ热量 写热化学方程式2.3g某液态有机物和一定量的氧气混合点燃,恰好完全燃烧,生成2.7g的水和2.24L的CO2（标况）,并放出68.35kJ的热量.这里没给出有机物的相对分子质量怎么求分子式啊. 如何写热化学方程式 1.There was something ( )the man 's voice that sounded familiar.A.about B.from C.in D.on2.Until he took off his glasses ( )A.I didn't recognize him B.I hadn't recognized himC.didn't I recognize him D.hadn't I recognized himA；B.但本人没弄懂的 初三数学,三至五小题! 小学六年级的大队委演讲稿,300字左右 我要学物理奥赛 用什么书好 国际商务单证员和跟单员有什么区别?如题 一道英语语法选择题Do let your mother know all the truth.She appears to__everything.(tell)是填be told 吗?答案为什么是have been told? be told 为什么不行 英语语法——选择题一道!具体记不清了……好像是：Reading is to mind ____food is to body.(反正横线两边是两个完整的句子,意思就是：阅读对人来说就像是食物对身体一样重要）A.like B.what为什么不 一道英语语法的选择题It ——15 years since he left here.Awas B has been C has D will be 我看过很多这种类型的题都是选择is,要怎么区分啦 一道英语语法选择题...急4.---We haven't heard from Jane for a long time.---What do you suppose _____ to her?A.was happening B.to happenC.has happened D.having happened为什么选C不选D,不是suppose to 我记得还有一种suppose that的 That flat is too small for two people to live in.同义句that flat is ( ) ( ) ( ) for two people to live in. 一个英语语法选择题_____is the center of our planetary system was a difficult concept to grasp in the Middle Ages.A.It is the sun and not the earthB.Being the sun and not the earthC.The sun and not the earthD.That the sun and not the earth为 6x+3y=10 2x-4y=-55201314 一道英语语法选择题 英语高手来下the invention of the modern computer is one of the great contributions ( )to man's efficiency.B.having ever been made 这个选项作定语为什么不行啊不是现在分词作定语可以的吗请详 问几道六年级英语题……（快）……①Fourteen students in our class are boys ,______are girls.（选择）A.the others B.the other ②Alice is four years old.Mary is eight years old.（改为同义句）Mary is _____ Alice's ____.答案 第三大题的第一小题和第三小题答案 1.He’d like to drink some water.（同义句）2.We had a running race at our school.（对a running race划线提问）3.玩得非常开心（翻译成英语） 谁有初中生物复习提纲（七年级下）请快一点回答我