【单选题】一物体做变速直线运动,它的速度函数是v=4t,在[1,2]时间段内该物体的位移为()。
【多选题】从招聘角度审视求职,那么企业更喜欢什么样的员工?
【简答题】一物体做变速直线运动,它的速度函数是v=2t,在[1,2]时间段内该物体的位移为( )。
【单选题】每当他跟女友在一起时,他的思维似乎就变得活跃了。
A.
When he stayed with his girlfriend, his mind seemed to come lively.
B.
When he stayed with his girlfriend, his mind seemed to come alive.
【简答题】化工单元操作的内容是研究各单元操作的 , ,设计计算 。