【单选题】A、B相互独立,P(A)=0.75,P(B)=0.8,则P(A∪B )=( )
【单选题】关于灰阶的概念 1灰阶是显示亮度信号的等级;2灰阶实质指的是窗位3视觉最大灰阶等级为 8 个;4 2000 个 CT 值范围有 64 级灰阶;5 16 级灰阶中每一级含 125 个 CT 值。正确的是( )
【单选题】A、B相互独立。P(A)=0.75,P(A-B)=0.45。则P(B)=( )。
【单选题】Texting is uncommon in Asian countries.
【单选题】Basic values in Western countries are different from values in Asian countries.
【简答题】The best way for the western businessmen to make the right connections in Asian countries is to ______.