词汇与结构 When system fluid is lost, emergency fluid is draw from the bottom of the________.
举一反三
- 词汇与结构When system fluid is lost, emergency fluid is draw from the bottom of the________. A: preservation B: reservoir C: reserve D: reservation
- Standpipe in the bottom of reservoir can store the amount of hydraulic fluid for emergency operation.
- When the system vibrates in a fluid medium, the damping is ( )a)Viscous b) Columb c)Solid d)Fluid A: None B: None C: None D: None
- From the perspective of the fluid leakoff mechanism of fracturing fluid, which kind of fluid leakoff coefficient mainly controls the effect of fracturing fluid's wall-forming property（ ）。 A: Reservoir fluid compression zone B: Fracturing fluid invasion zone C: Filter cake area D: Wellbore area
- ______ is mainly used in light aircraft and only used for emergency on many large aircraft, and its operation medium is ______. A: starting system, oil B: hydraulic system, compressed air C: elevator, hydraulic fluid D: pneumatic system, compressed air