A.4.25Pa
B.4.25kPa
C.41.68Pa
D.41.68kPa
[单选题]A.5cmB.6cmC.8cmD.10cmE.15cm
[单选题]A.4.25PaB.4.25kPaC.41.68PaD.41.68kPa
[单选题]A.4.25PaB.4.25kPaC.41.68PaD.41.68kPa
[单选题]A.≥B.≤C.>D.<
[单选题]A.≥B.≤C.>D.<
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