皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【简答题】
设总体X服从(0，θ)上的均匀分布，θ＞0为未知参数，X 1 ，X 2 ，…，X n 为来自总体X的样本．试证：统计量 都是未知参数θ的无偏估计量，并问哪一个更有效?
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】Read the essay below, then put the ideas into two groups: advantages and disadvantages. 1. sometimes people think they are talking online to someone friendly, but it might be a dangerous stranger. 2. ...
A.
advantages: 1, 2, 3, 8 Disadvantages: 4, 5, 6, 7
B.
advantages: 1,2,3,4 disadvantages: 5,6,7,8
C.
advantages: 2, 3, 4, 5 disadvantages:1, 6, 7, 8
D.
advantages: 2, 3, 5, 7 disadvantages: 1, 4, 6, 8
查看完整题目与答案
【单选题】Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
A.
weigh
B.
match
C.
defend
D.
Fight
查看完整题目与答案
【单选题】M7130 平面磨床比 C620 车床多了一个电路部分是( )
A.
主电路
B.
电动机控制电路
C.
照明电路
D.
电磁吸盘控制电路
查看完整题目与答案
【单选题】听力原文：Interviewer: Well, today on Starting Out, we look at the sandwich industry in Britain. I have with me Brian Fraser, the owner of 'Designer Sandwiches', and Geraldine Holmes, another successful sa...
A.
His first shop was unpopular.
B.
He had to close one of the shops.
C.
His second shop didn't open on time.
查看完整题目与答案
【单选题】能量信号的特点
A.
能量等于有限值，平均功率为0
B.
平均功率为有限制，能量为无穷大
C.
能量，平均功率均为无限值
查看完整题目与答案
【单选题】就房屋建筑工程而言，其关键部位、关键工序包括两类内容，一是( )：土方回填，混凝土灌注桩浇筑等；二是( )：梁柱节点钢筋隐蔽过程，混凝土浇筑等。
A.
基础施工类；主体结构构造类
B.
初期阶段工程；后期阶段工程
C.
基础工程类；主体结构工程类
D.
局部工程类；整体工程类
查看完整题目与答案
【判断题】混凝土结构或构件的施工过程，包括布料、振捣、抹平等工序。
A.
正确
B.
错误
查看完整题目与答案
【简答题】能量信号的特点?
查看完整题目与答案
【简答题】单词拼写。 1. Many people were _____ (埋葬) underground when the earthquake happened. 2. If you keep on _____ (忽视) your diet, trouble will follow. 3. Volcanoes, hurricanes, typhoons and earthquakes are natur...
查看完整题目与答案
【简答题】能量信号的特点________
查看完整题目与答案
相关题目：
【单选题】Read the essay below, then put the ideas into two groups: advantages and disadvantages. 1. sometimes people think they are talking online to someone friendly, but it might be a dangerous stranger. 2. ...
A.
advantages: 1, 2, 3, 8 Disadvantages: 4, 5, 6, 7
B.
advantages: 1,2,3,4 disadvantages: 5,6,7,8
C.
advantages: 2, 3, 4, 5 disadvantages:1, 6, 7, 8
D.
advantages: 2, 3, 5, 7 disadvantages: 1, 4, 6, 8
查看完整题目与答案
【单选题】Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
A.
weigh
B.
match
C.
defend
D.
Fight
查看完整题目与答案
【单选题】M7130 平面磨床比 C620 车床多了一个电路部分是( )
A.
主电路
B.
电动机控制电路
C.
照明电路
D.
电磁吸盘控制电路
查看完整题目与答案
【单选题】听力原文：Interviewer: Well, today on Starting Out, we look at the sandwich industry in Britain. I have with me Brian Fraser, the owner of 'Designer Sandwiches', and Geraldine Holmes, another successful sa...
A.
His first shop was unpopular.
B.
He had to close one of the shops.
C.
His second shop didn't open on time.
查看完整题目与答案
【单选题】能量信号的特点
A.
能量等于有限值，平均功率为0
B.
平均功率为有限制，能量为无穷大
C.
能量，平均功率均为无限值
查看完整题目与答案
【单选题】就房屋建筑工程而言，其关键部位、关键工序包括两类内容，一是( )：土方回填，混凝土灌注桩浇筑等；二是( )：梁柱节点钢筋隐蔽过程，混凝土浇筑等。
A.
基础施工类；主体结构构造类
B.
初期阶段工程；后期阶段工程
C.
基础工程类；主体结构工程类
D.
局部工程类；整体工程类
查看完整题目与答案
【判断题】混凝土结构或构件的施工过程，包括布料、振捣、抹平等工序。
A.
正确
B.
错误
查看完整题目与答案
【简答题】能量信号的特点?
查看完整题目与答案
【简答题】单词拼写。 1. Many people were _____ (埋葬) underground when the earthquake happened. 2. If you keep on _____ (忽视) your diet, trouble will follow. 3. Volcanoes, hurricanes, typhoons and earthquakes are natur...
查看完整题目与答案
【简答题】能量信号的特点________
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题