整个模板系统荷载通过提升架传递给爬杆
参考答案：对
It was the first time in my life that I ______ the wonderful scene. [ ]
A. saw
B. had seen
C. have seen
D. see
按照“后进先出”原则组织数据的数据结构是______。
A．队列
B．栈
C．双向链表
D．二叉树
