中国大学MOOC: 调压阀——控制集气干线压力。 Pressure regulating valve - control thegas collecting main pressure.
错
举一反三
- Which of the following hydraulic control valves belongs to pressure control valve （ ）. A: Unloading valve B: overflow throttle valve C: Hydraulic control check valve D: Low pressure selector valve
- 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
- The commonly used pressure control valve in hydraulic transmission system is ( ) A: directional valve B: relief valve C: hydraulic control check valve
- Check valve is not used to control _______. A: Direction of oil flow B: Back pressure of return oil C: Bypass of filter D: High pressure overflow
- 中国大学MOOC: In order to control your blood pressure, you should _______.
内容
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Check valve isn’t used to control ____. A: high pressure overflow B: back pressure of return oil C: direction of oil flow D: bypass of filer
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Overload protection on hydraulic system is provided by the use of （）. A: stop valves B: pressure relief valves C: balance valves D: regulating speed valve
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In hydraulic transmission, the hydraulic control valve used to control the pressure, flow and direction of liquid is ( ). A: Power plant B: control unit C: auxiliary device D: Actuator
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ABS consists of ECU (Electronic Control Unit), 4 wheel speed sensors and APV (Anti-lock Pressure Valve) as shown in Fig.5-11．
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提供适度的压力。 A: Apply moderate pressure. B: A medium amount of pressure must be applied.