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【简答题】
一批产品中有20%的次品,现进行重复抽样,共抽取5件样品,求 (1)这5件样品中恰好有3件次品的概率 (2)这5件样品中至多有3件次品的概率 .
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举一反三
【简答题】在 Excel 2010 中 是计算和存储数据的文件。
【判断题】The sales, debts, and resources of some of the largest multinational firms exceed the gross national product, the public and private debt, and the resources, respectively, of some nations.
A.
正确
B.
错误
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【简答题】Bill told me about a fascinating research project he was working on to study internal communications at some of Europe's largest and most progressive companies.
【简答题】After building bridges, railways and some of the largest ships in the world, Brunel was ___________ the greatest engineer in Britain.
【简答题】造成5000万元以上1亿元以下直接经济损失的事故属于()。 A特别重大事故 B重大事故 C较大事故 D一般事故
【单选题】—My pet dog died. —_________.
A.
Not at all.
B.
Sorry to hear that.
C.
Let me see.
D.
Sounds great!
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