轴承装配到机体孔内时，则应施力于（）端面上。
A、内圈
B、外圈
C、内外圈
D、滚动架
参考答案：B
Little _____ about his own health though he was very ill.
A．he cared
B．did he care
C．he cares
D．does he care
属于一般的镜头景别（）。
A.中景
B.近景
C.全景
D.小景
