【简答题】4摩尔的理想气体,温度升高25开尔文,摩尔热熔为C ,则此过程气体内能的增量为 。
【单选题】How to See Friendship More than forty thousand readers told us what they looked for in chose friendships, what they expected(51)friends, what they were willing to give in return, and how satisfied the...
【判断题】推力轴承,是一种主要用于承受径向载荷的滚动轴承 。