空15军驻地

请问World's markets take beating over fears about U.S.economy 第2题,非诚勿答 ¨●憈↘℡﹎『数学』如何解此双曲线问题?┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、如何解此双曲线问题?What's more:设F1、F2是双曲线x²/4-y²=1的两个焦点,点P在双曲线 ¨●憈↘℡﹎『数学』请问如何解该立体几何的问题?┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、请问如何解该立体几何的问题?What's more:点P为矩形ABCD所在平面外的一点且PA⊥ ¨●憈↘℡﹎『数学』如何解出2sinθ=cosθ?┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、如何解出2sinθ=cosθ?┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、 The teacher began by____us where the city was and went on____about its historyA.telling...to talk B.to tell...to talkC.telling...talking D.to tell...talking答案应该选A.为什么不选C?请说明原因, ¨●憈↘℡﹎『数学』请问如何解这个高次方程?┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、请问如何解这个高次方程?What's more:x^6-3x^3-2=0┈━═┈━═┈━═┈━═┈━═┈━ He began by showing us where the country was and went on ___ us about its climateA telling B to tell C to telling D to be told选择哪个?为什么 25.________ and the lecture began.a.In the professor comes b.In the professor comes c.In came the professor d.In comes the professor 26.The old woman is ________ composer as any younger.a.as good a b.such good a c.as a good d.so good a 27.He has ____ ____the lecture began.A.After we took our seats B.After we have sat down C.Having been seated D.Having sat down解释下为啥选A b ┈━═┈━═┈━═┈━═┈━═┈━═┈━═┈━═☆、What's more:已知摆动数列：1,-1,1,-1,…,有下列格式：(1) f(n)=(-1)^(n-1)(2) f(n)=sin(2n-1)Pi/2(3) f(n)=tan(2n-1)Pi/4其中能作为数列{f(n)}的通项公式 机械图纸中的比例如1:5 ,1: 机械图纸中1.5-8UN-2B是什么意思 机械里ZGuSn5Z5Pb5是什么意思最好是有全面的材料代号 我看见机械图中有 “ぐ吢嗳\x08_（. Because reading has been the most educative tool used by us right from the childhood.有语法错误码? 赤脚礼赞 《枫叶礼赞》的阅读答案 《枫叶礼赞》原文.不要阅读答案,要原文.是篇文章不是诗词.要全文 spent 意思,并填空：The man____two weeks mending his car.a.take b.takeing c.spent d.spenting spent是什么意思 spent什么意思 spent 什么意思 spent. 为什么钢材屈服点随钢材的厚度增加而降低? 语文阅读中,如题 最好举个例子! 什么是语文的照应,还有他的作用是什么 照应在语文中怎么用 英语翻译情境是一个人等了好久的公车都没有来,心里焦急.请不要逐字翻译~ File is damaged had damaged.is damaged.was damaged 有什么区别 语态中