简谐波沿ox轴正方向传播.波长等于4m,周期T=4S,已知x=o处质点如图.简谐波沿ox轴正方向传播

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呵呵~我想看是幸福结局的!中间的过程也不要太虐了! 请问雍正的御制朋党论是一篇文章还是一本书?如果是一篇文章的话,求全文 求海底两万里600字读后感 it's( eight thirty.)对打括号处提问.教教我! Eight and four is (twelve).对括号部分提问 It's( haif past eight).[就括号部分提问] It's( twelve o'clock ) now.(画括号部分提问) It is (half past eight).对括号内提问 英语语法的检查1 Chinese always say some kind word when guests leave and make them feel they would be welcome to come again.They send the guest far away as possible.2 The American say goodby to their guests at the doorstill.When the guest leave 有关台湾蝴蝶的文章 小学课文中关于台湾蝴蝶谷的文章谁有?能发上来么? 台湾散文作家有哪些? 台湾的蝴蝶谷课文我急用, 写蝴蝶的作文要写出蝴蝶的外形、特点.重点写它的翅膀,别写捉蝴蝶什么的,那样不给分.别误会,我不抄,只是我想要点灵感。 古典文学,女性形象,仿句.曹雪芹在“红楼梦”中刻画的林黛玉美丽聪明,多愁善感,像一株幽香飘逸的兰草. 会的来 海底两万里读后感600字 会得来 重谢I don't think his plan is ____A.worth being consideredB.worthy to be consideredC.worthy of consideringD.worth to be considered The plant may grow to a height of several meters ___soil condition.A depending on B and depends C depends on D to depend on 登广告 用advertise词组 怎么说 有三个空实际上 用purpose词组怎么说 有4个空同义句转换1.during the manager’s absence his secretary was in charge of the businessduring the manager’s absence the business was _ _ _ _his sec 因式分解,1、2题怎么写? 第二题因式分解, twenty和one的序数词 把基数词twenty-one变成序数词是什么 one(序数词) twenty(序数词) sun(形容词) come(第三人称单数)是英语哦 关于台湾回归的作文 one 的序数词形式是什么 我与宝岛台湾的初中作文(1000字左右) 宝岛台湾 作文1000 一篇关于我和宝岛台湾的论文,字数1000字. 一元二次因式分解(X+1)平方=2 我学不好怎么办?