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关于概率统计的题,请给详解
令Z=X(1) (没什么特殊含义,就是表达起来方便) 用定义F(z)=P{min{X1,X2...Xn}z} =1-P{X1>z}P{X2>z}...P{Xn>z}=1-[1-P{X...
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选发音不同的一项 sh 1,( )A ship B dish C teach D sheep o 2,( )A photo B phone C hole D shop
1.C 2.D 3.D 4.A 5.B...
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连词成句,英语OK的进~
1 Which city is the most beautiful? 2 Wellington is quieter than other cities. 3 Tokyo is a good place to visit....
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在海滩上不能做什么,英文翻译
What are not allowed on a beach? What can't you do on a beach?我要的是，在海滩上不可以做哪些事的英文翻译That depends on the particular beach. Some beaches in US are private, so general public can't ...
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亚马逊河的英文简介
The Amazon river has a series of major river systems in Peru and Ecuador, some of which flow into the Marañón and Ucayali, others directly into the Amazon proper. Among others, these include t......
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请根据以下内容用英语写一篇不少于80字的感谢信.
Dear Li Hua:Thanks again for your kind hospitality during my stay in Shanghai.I had a really great time there.We toured many interesting places and made some new friends.We also met some foreigners in......
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does后代词用兵格吗
看是什么句式和结构,这不能一概而论. 宾格是在做宾语才用的,通常跟在动词或介词后边.而如果该代词是主语,则仍然要用主格形式. 如疑问名中,does被置前,如果主语是...
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What type of party is it going to be?英语翻译
What type of party is it going to be? 译：它会是个什么类型的聚会? what type of,对种类提问....
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we have no secrets _______each other.A from B between
应该是A from 表示说 我们之间没有秘密（强调两个人各自的秘密都没有） 如果between,应该是说the secret between us 指我们之间（或者共同的）的秘密...
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加200
my new school lifeI am glad to have a new start,now I am a student of Grade 6,not far from middle school,I am not only excited but also a little nervous,as my study becomes more and more tough,but I h......
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