部编教材初中物理第一册P65中,关于“液体内部压强”一节,讲到“装有水的容器,如果侧壁有小孔,水就会喷出来。并附图4-11。”图中,显然,上边的小孔B的射流的射程最近,而下边的小孔C的射流的射程最远。笔者通过多次实验结果并不如此。射流具有最大射程的小孔位置并非在最下面,而是在高度H的中点A处。下面仅从理论的推导上来谈谈笔者的看法。设有一装满液体的容器,如图2,其高度为H, Part Teaching Materials Junior High School Physics, Volume 1, P65, on “Internal Pressure of Liquids” section, “Containers with water, if the side walls have small holes, the water will spray out.” Figure 4-11. In the figure, it is obvious that the jet of the upper orifice B has the shortest range and the jet of the lower orifice C has the shortest distance. The author through many experimental results is not the case. The location of the orifice where the jet has the largest range is not at the bottom, but at the mid-point A of height H. The following only from the theoretical derivation to talk about the author's opinion. With a filled container, shown in Figure 2, the height of H,