每日一题

Writing & Language

P=Pa+ρgh

The absolute pressure P in a fluid of density ρ at a given depth h can be found with the above equation, where Pa is atmospheric pressure and g is gravitational acceleration. Which of the following correctly expresses the depth in terms of the absolute pressure, atmospheric pressure, fluid density, and gravitational acceleration?

A.h=(P-Pa)/ρg
B.h=(P+Pa)/ρg
C.h=P/ρg-Pa
D.h=P/ρg+Pa

答案和解析

答案：A

解析：