推力滚动轴承主要承受（）力。
A.轴向
B.径向
C.径向和轴向
D.任意方向
参考答案：A
体重减轻到低于标准体重多少为营养不良
A．5%B．15%C．20%D．25%E．10%
This picture was taken a long time ago.I wonder if you can _______ my father.
A．find out
B．pick out
C．look out
D．speak out
