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【简答题】
若随机变量 服从 上的均匀分布,且有切比雪夫不等式 则 , 。
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【简答题】听下面一段材料,回答第1至3题. 1. What can we learn about the man? A. He wasn't in this afternoon. B. He doesn't believe what Mr. Smith said C. He will buy a new light. 2. What did the woman fail to do this afterno...
【单选题】What can we learn from the conversation?
A.
a The man is quite sure that he’ll be accepted by the new company.
B.
b. The man can have 15 days off per year if he works in the new company for three years.
C.
c. The man is now working in a very small company.
D.
d. The man earns about $65,000 at his present job.
【简答题】传统概念把 作为死亡标志,并把死亡过程分为 、 和 三期。
【简答题】听下面一段材料,回答第1-2题. 1. What can we learn about James Black? A. He's a little fat. B. He is interesting. C. He smiles a lot. 2. How are James Black's lessons? A. Boring. B. Interesting. C. Important.
【简答题】听下面一段材料,回答第1-2题. 1. What can we learn about Mr. Brown? A. He is in his office. B. He is at a meeting. C. He is out for a meal. 2. What will the man probably do next? A. Call back. B. Come again. C. Le...
【单选题】What can we learn about Americans studying abroad?
A.
China is a top destination for them.
B.
The number dropped slightly last year.
C.
Most of them study abroad for only one semester.
D.
Most of them want to learn more about other countries.
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