【简答题】一弹簧测力计下挂一圆柱体,将圆柱体从盛水的烧杯上方 离水面某一高度处缓慢下降,然后将圆柱体逐渐浸入水中.如 图是整个过程中弹簧测力计的示数 F 与圆柱体下降高度 h 变化关 系的图象.下列说法正确的是( ) A .当圆柱体刚好全部浸没时,下表面受到水的压强为 700pa B .圆柱体受到的重力是 10N C .圆柱体受到的最大浮力是 4N D .圆柱体的密度是 1.5 × 10 3 kg/m 3...
【简答题】(1) The police say seven people were _____ed for minor offences. (2) They should ______ foreign investment. (3) He is in a state of deep ______ on account of his failure to pass the examination. sympt...