如图所示，一底面积为S、内壁光滑的圆柱形容器竖直放置在水平地面上，开口向上，内有两个质量均为m的相同活塞A和B；在A与B之间、B与容器底面之间分别封有一定量的同样的理想气体，平衡时体积均为V。已知容器内气体温度始终不变，重力加速度大小为g，外界大气压强为$P_0$。现假设活塞B发生缓慢漏气，致使B最终与容器底面接触。求活塞A移动的距离。

20世纪五六十年代，丧失优势地位的欧洲国家在美苏争霸的夹缝中生存，为此，他们开始（   ）

.函数$f\left(x\right)=\sqrt{2}\sin (\omega x+\phi )(x\in R,\omega >0,\left|\phi \right|<\frac{\mathrm{\pi }}{2})$的部分图象如图所示，则$\omega ,\phi$的值分别是(  )

    I like school days. I can learn many things from school. We have four classes in the morning and two in the afternoon. I like weekends, too. We don't go to school on Saturdays and Sundays. I often play ping-pong and play basketball on Saturday morning. I often play the violin (小提琴) on Saturday afternoon. I often do homework and play football on Sunday morning. I often go to the park on Sunday afternoon.