If a flow is unsteady, its ____ may change with time at a given location. ( )
A: Velocity
B: Temperature
C: Density
D: Pressure
E: All of the above
A: Velocity
B: Temperature
C: Density
D: Pressure
E: All of the above
举一反三
- If a flow is unsteady, its ____ may change with time at a given location.（ ）。 A: Density B: All of the above C: Temperature D: Velocity
- An EOS relates volume （or density） to （ ）。 A: temperature B: velocity C: pressure D: viscosity
- An energy interaction is heat transfer if its driving force is a _______ difference. A: density B: pressure C: volume D: temperature
- In the process of well testing, every measured pressure and production does not change with time is() A: steady-state well testing B: unsteady test C: Pressure well test D: Constant pressure production well test
- The main physical properties of the fluid are （ ） A: density B: compressibility C: viscosity D: velocity E: flow rate