A.瓶内上方气体的压强始终不变 b.瓶内药液对瓶盖的压强越来越大c.空气管中的空气与药液接触处的压强等于大气压d.如果没有空气管输液可以正常 Template




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tomskia.瓶内上方气体的压强始终不变 b.瓶内药液对瓶盖的压强越来越大c.空气管中的空气与药液接触处的压强等于大气压d.如果没有空气管输液可以正常 coloring