Turbocharging system may be designed to operate on either the （） or the constant pressure exhaust system.

The pressure ________ causes Americans to be energetic, but it also puts them under a constant emotional strain.

In a constant pressure process for a closed system, the enthalpy change of the system depends on the heat exchanged.

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

In a constant pressure process for a closed system, the internal energy change of the system is equal to the sum of the heat exchanged and the work.

When the mode of operation is production at a constant surface pressure, we can assume that the flow rate is changing slowly and smoothly.

The doctor found the patient"s blood pressure remained ______ at all time. A: constant B: continuous C: continual D: available

According to the video, the following causes can make self-steem pressure for teenagers( ) A: Self-image B: Constant criticism from parents or teachers. C: Unrealistic expectations From parents or teachers.

In order to ensure that the pressure difference between the front and rear of the throttle valve remains unchanged when the load changes, the flow through the throttle valve is basically unchanged. The throttle valve is often connected with ( ) to form a speed control valve, or the throttle valve and ( ) are connected in parallel to form a bypass speed control valve. A: Pressure reducing valve B: constant pressure reducing valve C: overflow valve D: differential pressure relief valve

According to the way the energy of the exhaust gases is utilized， pressure-charging can be divided into two main systems， namely， the constant-pressure system and （）.