二项分布的期望和方差

硫酸葡萄糖胺和硫酸氨基葡萄糖有什么不同,主要的区别在什么地方,治疗关节炎哪种药物更有效, sworn to before me on the day of ..2007 Sworn and subscribed before me this :____day of_____month of_____year 怎么填写啊,啥意思?是填日期呢,还是天多少天多少个月多少年? 葡萄糖胺主要从哪里提取? words that sound similar ___ known as rhyming wordsis are was were 填哪个?为什么? 海岸工程为什么会使海洋物质变少 二甘醇胺可以直接用于LCD光阻膜的剥除吗 不考虑波浪潮汐的因素,你觉得大洋的洋面是什么形状的?为什么? 不考虑波浪潮汐的因素,你觉得大洋的洋面是什么形状的?怎么各种答案都有? 急救!描写人物外貌的句子!最好是红楼梦里描写人物的句子 翻译Previous studies have found that cancerous cells use nuclear factor kappa-beta--a transcriptionPrevious studies have found that cancerous cells use nuclear factor kappa-beta--a transcription factor, or protein that turns on or off a gene's prot 疯狗为什么追人 为什么有的鸡会追着人咬,和疯狗一样呢? Difficult to difficult后接to还是for 【急救啊】一句句子,简单的但是.与.有一定的区别,主要表现是.“但是添加小麦抗性淀粉，与添加红薯和玉米抗性淀粉有一定的区别，主要表现是随着醒发时间的延长，弛豫特性有明显的变 我想知道些关于爱情的诗句,我不要古诗~请帮我找些现代的`网络的更好~ 英语翻译I only have 1 left.But i have the other one with the talking base the toy is the exact same as the 20th Optimus prime.I have good stock on that item.Please let me know if you are interested.Thank you.Anthony 英语翻译Of course,being nice is not what makes one a Canadian.There are presumably some formal criteria that determine whether one is Canadian; nevertheless,it is a necessary feature of anyone who is Canadian that he is nice. 英语翻译Premier Li Keqiang called for better efforts to ensure growth and boost domestic consumption,as the State Council met to review the economy's performance and map out its policy focus in the coming months. Reserve Not Met EBAY上常看到这句,我猜很可能是：reserve price is ont met 的简写，是不是还没达到底价的意思。 is difficult to同义词是什么 请解释这个题 并请再写出一个包含"they"这样用法的句子填空题I intended to compare notes with a friend, but unfortunately (they) couldn't spare me even one minute. 为什么写they? one行不?请举例 两个they的句子的含义They damn well better They’ll be here 今天在公安局采集了我的DNA信息和SIM卡信息,是干什么啊? 形容学科的词 英语 例如：interesting boring difficult fun "无趣"用英语怎么说? 太阳能量光怎样存储? 怎样使太阳光线集中起来要准哦 The book is so dearthat I can't afford it.The book is dear so that I can't afford it.哪个一个的表达对 为什么? Why\How\What\Where\Did分别什么意思 lay和lie的区别是?我老搞不清……