A:20%
B:16%
C:300%
D:120%
梁启超说:“昨日就专制,而今日已共和,如两船相接触,而绝无一楔子以行其间,则其冲突之程度,必极猛烈。”梁启超意在说明( )
在△ABC所在的平面内,点P0,P满足P0B→=14AB→,PB→=λAB→,且对于任意实数λ,恒有PB→·PC→≥P0B→·P0C→,则( )
长方形____个;正方形____个;圆____个;三角形____个。
I bought a smartphone(智能手机) yesterday, and it works well, would you like to buy ________ like this?