"! felt I was completely alone. I thought these wasthere to help."So Frank went back on to the streets toa future of sleeping outside, the occasional shelterhostels, and sometimes prisonhe was picked对于符合验收条件的公路工程,应自收到申请文件之日起( )内组织竣工验收。S是一个数列(A, A, …, A),问数列S的标准方差是多少(1)每个数相等。(2)该数列的算术平均数是7。解表药主归( )设—棵完全二叉树共有500个结点,则在该二叉树中有个叶子结点。