The_______is a crystal which, under pressure, produces an electric current which varies with the pressure A.alternator B.glass thermometer C.bourdon tube D.piezoelectric pressure transducer
举一反三
- Which of the following about arterial blood pressure is correct? A: Average arterial pressure is the average of systolic and diastolic blood pressure. B: The variation of aortic pressure and left ventricular pressure is the same. C: The variation of aortic pressure and left ventricular pressure is the same. D: Arterial blood pressure increases with age in both men and women.
- 3. The three-phase point of water is a temperature and pressure condition under which water, ice and steam can coexist. The corresponding temperature is 0.01℃. Under this temperature, the external pressure of water is（ ） A: 101.325kPa B: 0.6106kPa C: 100kPa D: 1000kPa
- With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure， which is the best means to （） of the engine.
- Pressure transient test is a test which we generate and measure the pressure change in a well as a function of rate.
- 智慧职教: The low and high pressure compressors include __________ stages which step-by-step increase the pressure of the air.