A.45° B.55° C.60° D.65°
A.圆锥轴承 B.圆柱轴承 C.滚针轴承 D.滑动轴承
A.刚性万向节和柔性性万向节 B.刚性万向节和挠性万向节 C.等速万向节和挠性万向节 D.刚性万向节和非等速万向节