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【单选题】
设随机变量 服从参数为 的指数分布,令 则 的分布律为A.
-1 1 0.5 0.5
B.
-1 1 0 1
C.
-1 1 1 0
D.
无法确定,与 有关
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反馈参考答案：
举一反三
【简答题】根据分析对象不同,分析化学可以分为( )分析与( )分析;根据分析原理和操作方法的不同,可分为( )分析和( )分析。
【简答题】I never thought I would have a lifechanging experience at WalMart. Although my thoughts were only on speed，the checkout line I was standing in wasn’t moving as quickly as I wanted，and I glanced towa...
【简答题】To be ______ , I must say it happened at 5:58. But you said it happened about 6:00. A.sincere B.exact C.modest D.respectful
【简答题】根据分析对象不同,分析化学可以分为( )分析与( )分析。
【单选题】What would have happened ______as far as the river bank ?
A.
Bob had walked farther
B.
if Bob should walk farther
C.
had Bob walked farther
D.
if Bob walked farther
【简答题】While I was on my way into Wal-Mart, I was greeted by a woman working at the door. Before I wanted to buy what I wanted, I had a(n) to make, and I was stopped by the woman, who wanted to my bag. Usual...
【单选题】_____I was there that evening.
A.
It happened to
B.
It happened that
C.
That happened
D.
It is happened that
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