Mike____ (与……相似) his mother in appearance while his personality follows his father's.
下列历史事件,按发生时间先后顺序排列的是
①中共七届二中全会 ②渡江战役 ③三大战役 重庆谈判
有下列四个命题:①函数y=x+14xx≠0的值域是1,+∞);②平面内的动点P到点F-2,3和到直线l:2x+y+1=0的距离相等,则P的轨迹是抛物线;③直线AB与平面α相交于点B,且AB与α内相交于点C的三条互不重合的直线CD,CE,CF所成的角相等,则AB⊥α;④若fx=x2+bx+cb,c∈R,则fx1+x22≤12fx1+fx2其中正确的命题的编号是( )