По кaкой формуле определяется пьезомeтрический нaпор?<img src="/close/store/examRes/%7BFA25E614-5CFB-4618-8BBA-EB17420498FE%7D/GD1_28.JPG" /><img src="/close/store/examRes/%7BFA25E614-5CFB-4618-8BBA-EB17420498FE%7D/GD1_25.JPG" /><img src="/close/store/examRes/%7BFA25E614-5CFB-4618-8BBA-EB17420498FE%7D/GD1_27.JPG" /><img src="/close/store/examRes/%7BFA25E614-5CFB-4618-8BBA-EB17420498FE%7D/GD1_26.JPG" /> <img src="/img/8b/c4bab8e3a539f57c4705e2220b.jpg" />, <img src="/img/8f/5db387f7b8d57a57405e18135e.jpg" />, <img src="/img/36/daa8bab07ba41bbd7fe8aefaa8.jpg" />, <img src="/img/53/65b345216ea6a25b3ab417b6f1.jpg" />