A.17.2Mpa B.18.3Mpa C.17.45Mpa D.10Mpa
A.P2+[(P2-P1)/(H2-H1)]•(H中-H2) B.(P2-P1)/(H2-H1) C.P=Hr/10 D.[(P2-P1)/(H2-H1)]•(H中-H2)
A.(P2+P1)/(H2+H1) B.(P2-P1)/(H2-H1) C.(P2-P1)/(H2+H1) D.(P2+P1)/(H2-H1)