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【简答题】
设随机变量 X,Y,Z 相互独立,其中 X 服从区间 [0 , 6] 上的均匀分布, Y 服从二项分布 B(10, 0.5) , Z 服从参数为 3 的泊松分布,令 U=X-2Y+3Z ,则 EU=_________
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【单选题】Our new English teacher is Mary Jones. We call her ______. [     ]
A.
Miss Mary
B.
Miss Jones
C.
Mr. Mary
D.
Mr. Jones
【简答题】阅读理解。 Chris Jones recently completed a very unusual journey. Our reporter Mary Owen met him at his home in the south of London and be told her all about the trip. Reporter: What gave you the idea to m...
【简答题】Chris Jones recently completed a very unusual journey. Our reporter Mary Owen met him at his home in the south of London and be told her all about the trip. Reporter: What gave you the idea to make a ...
【判断题】投保运输险货物与未投保运输险货物可以按一批办理。
A.
正确
B.
错误
【单选题】最早创造出系统脱敏治疗技术的是:(    )
A.
Mary Jones    
B.
Joseph Volpe
C.
Watson    
D.
Skinner
【单选题】下列不属于重力式桥墩的组成部分( )。
A.
墩帽
B.
桩柱式
C.
基础
D.
墩身
【简答题】Jack: Have you met Miss Jones?Mary: ______
【单选题】听力原文:W Hello, front desk? This is Mary Beth Jones in room 612.1 am waiting for a package. Has it arrived yet? M Just a minute, Ms. Jones. I'll have a look. No, there doesn't seem to be anything here. ...
A.
At a post office
B.
At a hotel
C.
At a check-in counter
D.
At a meeting room
【单选题】设备租赁与购置方案的经济必选是互斥方案的优选问题,一般寿命相同时采用( )
A.
现值法
B.
净现值法
C.
净年值法
D.
财务净现值法
【简答题】阅读理解。 Chris Jones recently completed a very unusual journey. Our reporter Mary Owen met him at his home in the south of London and be told her all about the trip. Reporter: What gave you the idea to m...
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