【单选题】【消耗次数：1】
Good night and thanks again.
①
You can’t say that
②
No, no. It’s what I can do
③
How can you say that
④
Good night
参考答案：
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相关题目
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What can I do for you, madam?
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I want a kilo of apples
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随机题目
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泊松分布的分布列为：<img class=jc-formula data-tex=P（X=k）=\frac { { \lambda }^{ k }{ e }^{ -\lambda } }{ k! } (k=0,1,2,\cdots ) src=https://huaweicloudobs.ahjxjy.cn/CACF47745FD1C7275E622987D519188E.png style=vertical-align: middle;/>
①
正确
②
错误
【简答题】
[填空]，它又称合作图，它和时序图一样，也是用于描述对象间的交互关系，但侧重点不同。
【简答题】
设计优化必须先设定各项质量指标的[填空]。
【判断题】
<img class=jc-formula data-tex=[a,b] src=https://huaweicloudobs.ahjxjy.cn/FD8E0CF6A23EB9F286867CA0682E241E.png style=vertical-align: middle;/>上均匀分布的随机变量的密度函数为：<img class=jc-formula data-tex=f(x)=\left\{ \begin{ matrix } \frac { 1 }{ b-a } , \\ 0,其他. \end{ matrix }ab, \right src=https://huaweicloudobs.ahjxjy.cn/B7CBD1A6DB3097F2C5CEF450ADEB42F8.png style=vertical-align: middle;/>
①
正确
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错误
【判断题】
设随机变量<img class=jc-formula data-tex=X src=https://huaweicloudobs.ahjxjy.cn/18E2773B1E2835B209E7E51B85285E80.png style=vertical-align: middle;/>的分布函数为<img class=jc-formula data-tex=F(x)=\left\{ \begin{ matrix } 0,x-1, \\ 0.25,-1\le x0, \\ 0.75,0\le x1, \\ 1,x\ge 1. \end{ matrix } \right src=https://huaweicloudobs.ahjxjy.cn/61DE4231EC61E9C0F5281E2E177A9FB5.png style=vertical-align: middle;/>,则<img class=jc-formula data-tex=P(0\le X\le 1)=0.75. src=https://huaweicloudobs.ahjxjy.cn/4FB17B152B1E5089B0E0C9C339086583.png style=vertical-align: middle;/>
①
正确
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错误