YT型调速器处于油压手动运行时,能够控制主接力器移动的机构是()。
A、引导阀
B、离心摆
C、变速机构
D、开限机构
参考答案:D
___ quite well in the important exam, he came back home and smiling. [ ]
A. Having done; relaxed
B. Having done; relaxing
C. Having been done; relaxing
D. Done; relaxed
以下数据结构中哪一个是非线性结构?()
A.队列
B.栈
C.线性表
D.二叉树