【单选题】In the end ,he decided to send the sick child to hospital.
【判断题】切削用量选用不当,会使工件表面粗糙度不达标。
【判断题】轴向拉压变形时,杆件内产生的内力称为轴力。
【单选题】_______, the lost child was saved by the police in the end.
【单选题】_____, the lost child was saved by the police in the end.
【单选题】_______, the lost child was saved by the police in the end.
【单选题】根据集合中元素的个数情况,把集合分为有限集合,无线集合和
【判断题】切削用量选用不当,会使工件表面粗糙度达不到要求。