皮带的线层越多,越容易造成皮带跑偏。
参考答案:对
But for the metal cage to pull the miners to safety, the miners in Chile ____ in less than twenty-four hours.
A.would not be rescued
B.would not have been rescued
C.would be rescued
D.would have been rescued
下列与“对症下药”蕴含相同哲理的是( )
A.否极泰来
B.滴水穿石
C.塞翁失马
D.量体裁衣