【单选题】半补偿链形悬挂和简单悬挂接触线的张力和弛度符合安装曲线,允许偏差为 ( )%。
【单选题】一质点其速率表示式为 ,则在任一位置处其切向加速度 为:
【单选题】The race is ( 25 / 50 ) kilometers long.
【简答题】Bicycle tour and race A bike tour and race will be held on August 26 and 27( Sat. &Sun.)at 5:30 am, the riders will leave Tian'an Men Square and ride the first 35 kilometers as a training leg. Then th...
【单选题】David is the ______ holder of the world 5,000-meter race world record, but there is no guarantee that he will win in the Olympic Games.
【判断题】司马光认为,刑赏不仅要符合法理,有时也可以兼顾人情。()