A:浮力逐渐增大,压强逐渐增大
B:浮力逐渐增大,压强逐渐减小
C:浮力不变,压强逐渐增大
D:浮力不变,压强不变
温度升高时,温度计内的水银(汞)柱会上升,从微观角度分析,其原因是()
参考词汇:lecture 讲座;museum 博物馆
A plan for Winter Camp
We will have a winter camp from January 21 to January 24 in Guangzhou. Here is the plan for the four days.