皮皮学，免费搜题
登录
搜题
【简答题】
某种型号日光灯管的使用寿命X小时是一个连续型随机变量，它服从参数为λ(λ＞0)的指数分布，且一只日光灯管的平均使用寿命为800小时，求：
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Which is the longest river in England?
A.
The Thames
B.
The Severn
C.
The Clyde
D.
The Ness
【单选题】Which is the longest river in the UK?
A.
River Severn
B.
River Thames
C.
Loch Ness
D.
The Great Lakes
【简答题】A．The cause of the flood. B．The effects of the flood. C．The heroic fight against a flood. D．Floods of the past twenty years.
【简答题】A．The effects of the flood. B．The prices of fruits and vegetables. C．The cause of the flood. D．Floods of the past twenty years.
【单选题】Which is the longest river in America?
A.
Hudson River
B.
Columbia River
C.
St. Lawrence River
D.
The Mississippi River
【单选题】Which is the longest river in the Great Britain?
A.
Lough Neagh
B.
River Thames
C.
River Clyde
D.
River Severn
【简答题】《民法通则》第4条规定，民事活动应当遵循自愿、公平、等价有偿、______________的原则。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
