题目

Do you know the late leader of China, Deng Xiaoping? He was called the“chief architect of China’s reform and opening-up (中国改革开放的总设计师)”. August 22 is the 110 anniversary of his birth. President Xi Jinping held an important meeting for the event on August 20 , 2014 in Beijing. Senior leaders Li Keqiang, Zhang Dejiang, Yu Zhengsheng, Liu Yunshan, Wang Qishan and Zhang Gaoli also attended the event. Deng was born on Aug, 22, 1904 in the southwest China’s Sichuan Province. He also had the name Deng Xiaosheng. His father , Deng Wenming , was a middle-level landowne 如图所示，当你手握饮料罐时，手和罐都在空中静止。属于平衡力的是  ：（      ） A．手对罐的压力与罐对手的压力    B．罐受到的重力与手对罐的压力 C．罐受到的重力与手对罐的摩擦力  D．罐对手的摩擦力与手对罐的摩擦力