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题目 如图1所示,S形管内充满水,用手指堵住上、下两端的开口后竖立在桌面上.若同时松开手指,则()A.水从上面的管口流出B.水从上面的管口流出C.水从上、下两个管口同时流出D.水不会从管口流出来分析 这道题所联系到的知识有液体的压强和大气压强.
The problem is shown in Fig. 1. The S-shaped tube is filled with water. Block the top and bottom openings with your fingers and stand on the tabletop. If you loosen your finger at the same time, () A. Water flows out of the top nozzle. B. Water Outflow from the upper nozzle C. Water flows from the upper and lower nozzles simultaneously. D. Water does not flow out of the nozzle. The knowledge associated with this problem is the liquid pressure and atmospheric pressure.