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南亚和南亚易胜一样吗我笔记本上的内存条上标着“nanya”,这是哪个牌子的啊? 一道函数二阶求导的问题!求1/1-根号X的二阶导数! 昆山南亚怎么样 二阶函数求导f(x)=x.的二阶导数存在吗 折射的原理是什么? How is the 光的折射原理是什么站在暗处的人能够看见站在亮处的人，站在亮处的人不能看见站在暗处的人，这是因为什么 求翻译：You asked me for my summer vacation arrangement in your last letter . How big is the room? 什么是光的折射原理呢? 急,我有两桶聚氨酯发泡剂黑料,因时间长了,有一桶特别绸,和白料混合后发起泡来,缩泡,不干；另一桶好一点发起跑来有点软,请那位懂这方面技术的人才给想个解决的方案, How clean the room is today! 大学英语（选择题若干）求解答31． The sore throat made it hard to _______________ even such a small pill.（2 分） A． devour B． eat C． swallow D． overwhelm32． Praise is particularly appreciated by those doing _______________ 26.The boy ______A____ the dog with a thick stick but the dog did not yield.A.came at B.came with C.won over D.won at 27.The government will have to work hard __________ the confidence of the people after the terrible event.A.to win back B.to win thr 11 This is a land of villages and ______ countryside.a、straight b、 spacious c、 enormous d、 adequate12 The commander has received the report ______ the enemy will launch an attack before dawn.a、that b、 it c、 which d、 what13 You ______ You should have been more patient ______ that customer；I‘m sure that selling him the watch was a possibility.A.ofB.withC.forD.atHow long do you think ________ to finish this urgent task?A.did it take youB.it will take youC.will it take youD.it to 光的折射规律有五条啊 光的折射原理是什么? 灯泡制作工艺有哪些 灯泡制造工艺向众位朋友求教汽车灯泡座制造工艺 初中英语I am tired . I _______ the living room all day Hi Tracy you look tired.i am tired.i__the living room all day.-Hi Tracy,you look tired.-I am tired.I__the living room all day.A coloring B picturing C painting D drawing说理由. 拉曼是个怎样的人 拉曼是哪个国家的 物体下落速度与高度有关吗?水从不同的高处落下,形状是不同的,为什么?希望可以回答的更具体一点 our,the,often,family,living,TV,in,watch,room she __(not watch)TV in the living room .横线上该怎么写是现在进行时呢 还是一般现在时啊 It's einght o'clock kitty and ben ()(watch)tv in the living room 背胶PP纸如何粘贴到玻璃上? 一、请简要描述以下事例反映了信息技术的哪些发展趋势.专供老人使用的手机 手机语音拨号 Office助手 多媒体仿真物理实验室 光的折射原理 THE LIVING ROOM私房西餐怎么样