流体压力（fluid pressure）
流体压力（fluid pressure）
相关考题：
Air trapped in the hydraulic fluid of a steering system may be indicated byA.the steering pumps overspeedingB.a jammed open relief valveC.a constantly occurring improper rudder responseD.excessive ram pressure
The amount of fluid delivered by a positive displacement pump can be regulated by _____.A.throttling the pressure lineB.changing the speed of the driving rotorC.either A or BD.None of the above is tree
What type of valve is used to direct the flow of hydraulic fluid?A.relief valveB.direction control valveC.stop valveD.pressure control valve
Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ______.A.fluid frictionB.fluid turbulenceC.component misalignmentD.pressure surges
Pressure drop in an operating hydraulic system is developed ______.A.only by the pump as its primary functionB.by resistance to the fluid flow through the systemC.by the thermal input to the system's fluidD.solely(单独地) by the charge applied by the accumulators
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead ______.A.penetrationsB.platingC.framingD.brackets
关于Maya中的Fluid Effects（流体特效）说法错误的是（）。A、Maya中的Fluid Effects（流体特效）是基于动力学计算的，可以产生真实的流体运动效果，例如，制作空气、烟火、爆炸、粘性流体等B、流体可以分为动力学流体和非动力学流体两种类型C、从渲染形态上来讲，流体可以是气态效果，也可以是固态效果，这些效果都可以不在流体容器中生成D、可以通过调整流体与海洋材质模仿水面产生涟漪的效果
单选题Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?（）AThe high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pumpBRotary pumps are capable of pumping more fluid than reciprocating pumps of the same weightCRotary pumps occupy only one-half the space of reciprocating pumpsDRotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
单选题Clean air standards referred to as “Grade D” apply to compressed air for use in（）.Ahigh pressure fluid accumulatorsBdriving air-powered plunger pumpsCfilling open-circuit breathing systemsDbladder-type accumulators
单选题A more sophisticated pressure reducing valve incorporates a pilot valve which controls the fluid above the valve operating piston in response to downstream pressureThe bold and italic word “which” means （）.Aa pressure reducing valveBa pilot valveCan operating pistonDdownstream pressure
单选题In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.ApenetrationsBplatingCframingDbrackets
单选题Compensated flow control or constant flow valves are used in hydraulic systems to（）Acompensate for major leaks in the systemBmaintain the original fluid viscosityCallow for changes in pressure and temperature within the systemDassure constant fluid temperature
单选题If a hydraulic pump is overheating, the cause may be （）.Aexcessive internal leakage in the pumpBlow discharge pressure and fluid flowCexcessive fluid level in the hydraulic reservoirDoperation of the pump at 100% efficiency
单选题After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?（）AThe relief valves in the system should be readjustedBThe filters and strainers should be checked frequentlyCAll system pressure should be readjustedDThe system should be drained and renewed with a fluid of different operating characteristics
单选题Overflow valve is used to （）Acontrol the fluid flow through itBprevent the pressure before it over the specified valveCmake the pressure after it steadyDcontrol the direction of oil flow
单选题The general purpose of a heat exchanger is to （）.Aeliminate hot air from the condenserBmaintain steady pressure in a systemCheat, or cool one fluid by means of another fluidDreduce the engine room temperature in tropical climates
单选题关于Maya中的Fluid Effects（流体特效）说法错误的是（）。AMaya中的Fluid Effects（流体特效）是基于动力学计算的，可以产生真实的流体运动效果，例如，制作空气、烟火、爆炸、粘性流体等B流体可以分为动力学流体和非动力学流体两种类型C从渲染形态上来讲，流体可以是气态效果，也可以是固态效果，这些效果都可以不在流体容器中生成D可以通过调整流体与海洋材质模仿水面产生涟漪的效果
单选题The amount of fluid delivered by a positive displacement pump can be regulated by （）.Athrottling the pressure lineBchanging the speed of the driving rotorCeither A or BDNone of the above is tree
单选题Pressure in an operating hydraulic system is developed （）.Aonly by the pump as its primary functionBby resistance to the fluid flow through the systemCby the thermal input to the systems fluidDsolely by the charge applied by the accumulators
单选题The pressure head of a pump is given in the unit of （）.AkgBMPaCmeter fluid columnDNone of the above is true
单选题The amount of fluid delivered by a helical pump can be regulated by （）.Athrottling the pressure lineBchanging the speed of the rotorCeither A or BDNone of the above is tree