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将钓来的鱼分为前、中、后三段.中段恰好比前、后两段重量和少3千克.后段重量等于中段重量的一半与前段重量的和.前段重量是4千克,鱼多重. 嬴氏赶山鞭是何典故? 温室栽培草莓,采用什么颜色的玻璃做顶棚更能提高产量为什么是无色呢? In one minute ,the population of the world increased ___ 259.填哪个介词by,with,for,to答案是by,我想不通, 野渡无人舟自横 哪些蔬菜见阳光会产生色素沉淀? 哪些蔬菜或水果的色素含量比较高,易榨出颜色? i would like to go ,but i think i'd better not句子改错！！！！！！！！！！！！！！！！！！！！！ 睨柱吞蠃, 小孩吞了跳旗的玻璃珠怎么办 急.咳了两下,脸一下子通红,没过几秒又没什么事了,会不会吞肺里去啊? 已知a^2=16,|b|=3,ab＜0,求（a-b）^2+ab^2的值 I think someone is in.Let's knock the door.改错 i think someone is in .let's knock the door 这句话的knock为什么要改成knock at “Shampoo Bottles”什么意思 SDH微波组网方式有哪些 100% recycled water 是指什么材质? 网络课的packet over plastic bottles什么意思 stopper bottles是什么化学仪器? 下述哪项关于WDM与SDH的说法是错误的（）A.WDM与SDH均是光传输网络B.SDH将不同波长的光信号复用到同一根光纤进行传送C.WDM是频分多路复用在光传输介质上的应用D.WDM在光链路中以白光方式进 遇到这种题应该怎样解答?请写出思路 原子是什么东东? 已知集合A={x|x^2-4x+3=0},B={x|x^2-mx+x-1=0}C={x|x^2-ax+1=0},且A交B=B,A并C=A,求实数m.a 的取值范围真对不起啊 B打错了 应该是B=={x|x^2-mx+m-1=0} 不是x 非常抱歉。你们在做吧 集合P={x∈R|mx^2-4x+8=0,m∈R}中至少有1个元素时求m取值范围 squeeze用法..squeeze SB IN 和 squeeze SB 有什么区别?i am busy but i will squeeze you in at 2;30.i will try to squeeze you at 2;30 this afternoon.高手详细讲下.讲下2句的区别.squeeze SB IN 我了解意思 但为什么还有squeeze SB squeeze asmile 1的平方2的平方3的平方一直到N的平方,这么简算 英语翻译In the discussion of the general aspects of design,it is important to note that there is an important distinction between art and design.A designer is basically concerned with are solution of problems that are presented to him.The artist n的平方+5n-500=? 求过程rt The boy can make his bed by himself. (改为同义句)The boy _____ _____ _____make his bed by himself. n的平方+5n=80 求n 急. “公揣囊中已空,命同来家中取钱.”的意思