ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meting of the party secretary every fortnightly, arrange the work of the regiment, fedback the student information. Focus on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.压强复习例题 1:在下面两个图中画出物块对下方的压力,并讨论压力大小的特点。 例题 2:一块长方体橡皮,重为 0.3N,侧放于水平桌面上时,它与桌面的接触面积是 1×10-3m2。它对桌面的压强是 Pa。若沿竖直向下切去一块,则剩余部分对桌面的压力 (填“变大”或“变小”或“不变”)、压强 (填“变大”或“变小”或“不变”)、橡皮的密度 (填“变大”或“变小”或“不变”)。例题 3: 已知长方体 A、B 的密度之比为 2∶1,底面积之比为 l∶3,高度之比为 2∶3。将 B 放在水平地面上,A 叠放在 B 上面,如图甲所示,B 对地面的压强为 pB。若把 B 叠放在 A 上面,如图乙所示,B 对 A 的压强为 pB¢。则 pB∶pB¢ 为 A.4∶9 B.3∶1 C.13∶3 D.13∶27例题 4:如图是小鹏在使用同一支压强计探究液体内部压强过程中的一个情景。请你认真观察图,并回答下列问题:1、乙两次测得的压强哪次大?2你是根据什么现象作出的推断?3果 A、B 两烧杯中的液体都是水,根据实验,可以得到什么规律?例题 5:三个底面积相同、重力相同的不同形状的容器内装入相同深度的水,试比较三个容器底受到的压强、压力;容器对地面的压力和压强。Strengthen the team connection, strengthen the knowledge education among the students (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All League branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as th...