【单选题】Carlo: How much is it for a person for a day? Ben: With lunch, its only 60 Euros. Carlo: Ok, ______.
【单选题】绝对感受性与绝对感觉阈限在数量上成( )。
【单选题】绝对感受性与绝对感觉阈限在数量上成( )关系。
【单选题】绝对感受性与绝对感觉阈限在数量上成( )关系。
【简答题】设二维随机变量(X,Y)的联合分布函数为 求常数A,B,C.设二维随机变量(X,Y)的联合分布函数为F(X,Y)=A(B+arctanX)(C+arcY).求 (1)常数A,B,C (2)关于X,Y的边缘分布函数
【判断题】(PartB)Ben could only lie on his back day and night whereas Jack could sit up and walk about for a brief period every day.