单项选择题

下面哪种运动副属于高副（）。
A、螺旋副
B、转动副
C、移动副
D、齿轮副

你可能感兴趣的试题

单项选择题

While the trend in health care over the past twenty years has been toward patient empowerment, physicians are still ultimately responsible for the health care decisions made in a patient’s treatment. What does “empowerment” mean here?

A．take power from
B．give power to
C．share power with
D．split power between

单项选择题

能够实现坐标系切换的按钮是 A.
RESET B.
COORD C.
FWD D.
BWD