由于楔键在装配时被打入轴和轮毂之间的键槽内，所以造成轮毂与轴的偏心与偏斜。( )
参考答案：对
直线y=-3x+5一定不经过的象限是 [ ]
A．第一象限
B．第二象限
C．第三象限
D．第四象限
Some people think that ads are great, but don't. [ ]
A. others
B. other
C. the other
D. some
