如图所示为冷盐水循环系统。盐水的密度为 1100 kg/m 3 ,循环量为 45 m 3 /h 。管路的直径相同,盐水由 A 流经两个换热器而至 B 的能量损失为 9 m ,由 B 流至 A 的能量损失为 15 m 。求(1)泵的轴功率,已知效率为 0.65 ;( 2 )若 A 处压力表读数为 0.15 MPa ,则 B 处压力表读数为多少?(提示:一般压力表的读数是绝对压力还是相对压力?)
【简答题】阅读理解 After the First World War (战争), a small group of soldiers left the army and returned to their hometown in France. Most of them lived well, but one of them was poor. His name was Clinton. Once a ...