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【单选题】
设X服从[-a,a]上的均匀分布a>0，若P{X>1}=1/3，则a=．A.
1
B.
2
C.
3
D.
4
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举一反三
【简答题】A man found the cocoon (茧) of a moth (蛾). He took it home so that he could 1 the moth come out of the cocoon. On that day a small 2 appeared. He sat and watched the moth for several hours as the moth ...
【判断题】大多数犯罪动机是在犯罪人需要基础上,受犯罪诱因的刺激而产生的,是犯罪人需要和犯罪诱因相结合共同作用的结果。这是“犯罪人的需要-犯罪动机模式”的主要内容。
A.
正确
B.
错误
【单选题】根据建设部《危险性较大的分部分项工程安全管理办法》规定，建筑工程中起重量300kN及以上的起重设备安装工程的吊装方案，施工单位应当组织专家对专项方案进行论证，再经（）审批。
A.
施工项目技术负责人
B.
施工企业技术负责人
C.
现场设计代表
D.
项目专业监理工程师
【简答题】阅读理解。 I've 1ived my mother's desk since I was just tall enough to see above the top of it as mother sat doing letters.Standing by the chair, looking at the ink, bottle, pen and white paper, I decided ...
【简答题】A man found a cocoon of a moth. He took it home so that he could 31 the moth come out of the cocoon. On that day a small 32 appeared, he sat and watched the moth for several hours as the moth struggle...
【简答题】完形填空。 A man found the cocoon (茧) of a moth (蛾). He took it home so that he could 1 the moth come out of the cocoon. On that day a small 2 appeared. He sat and watched the moth for several hours as the...
【单选题】根据建设部《危险性较大的分部分项工程安全管理办法》规定,房屋建筑和市政基础设施工程中,起重量300kn及以上的起重设备安装工程的吊装方案,施工单位应当组织专家对专项方案进行论证,再经（ ）审批。
A.
施工项目技术负责人
B.
施工企业技术负责人
C.
建设单位代表
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