In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead ______.A.penetrationsB.platingC.framingD.brackets
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead ______.
A.penetrations
B.plating
C.framing
D.brackets
相关考题：
甲板部由大副负责。A.The captain is the head of a ship.B.The master is the head of a ship.C.The deck department is under the command of the chief officer.D.The pilot is the head of a ship.
Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ______.A.fluid frictionB.fluid turbulenceC.component misalignmentD.pressure surges
Which statement is TRUE concerning cargo hose on tank barges ________．A.Cargo hose must be able to withstand the shut-off head plus the static head of the cargo pumpB.Cargo hose must be able to withstand the static head of the cargo pump but no less than 100 psiC.Cargo hose must be able to withstand the shut-off head less the static head of the cargo pump but no less than 100 psiD.Cargo hose must be able to withstand at least 150 psi
A hydraulic accumulator aboard a ship is designed to ______.A.store fluid under pressureB.act as a fluid reservoirC.provide overpressure reliefD.replenish fluid to a system
甲板部由大副负责。（）A、The captain is the head of a ship.B、The master is the head of a ship.C、The deck department is under the command of the chief officer.D、The pilot is the head of a ship.
单选题（） provides the head or pressure to supply the domestic water where required.AThe compressed airBThe compressing airCThe transfer pumpDThe head tank
单选题In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.ApenetrationsBplatingCframingDbrackets
单选题In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause（）Amolecular fluid vibrationBenergy lossesCwide pressure variationsDmechanical damage to control valves
单选题A centrifugal bilge pump requires priming （）.Aprimarily to lubricate the shaft sealsBdue to the inability of this type of pump to lift water to cover the suction (eye) of the impellerCto initially unload the pump by having its head pressure equal to discharge pressureDin order to overcome the potential energy of water in the discharge line
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Which of the following statements about pump operations is NOT a correct statement?（）AIn order for a fluid to be pumped, a fluid must be made to flowBA substance must be cold in order for it to be pumpedCThe kinetic energy imparted by the pump can be used to force a liquid through a hydraulic systemDA pump must receive its energy from an external source
单选题A hydraulic accumulator aboard a ship is designed to（）.Astore fluid under pressureBact as a fluid reservoirCprovide overpressure reliefDreplenish fluid to a system
单选题The cast iron（）for the cross-head are attached to the top section and seal off the crankcase.Acylinder coverBcross-head shoesCguide-waysDscavenging boxes
单选题When the ship is in restricted visibility, the officer in charge of the engineering watch shall ensure that （） Ⅰ.Bridge order relating to changes in speed or direction of operation areimmediately implemented Ⅱ.auxiliary machinery used for maneuvering is readily available Ⅲ.permanent air or steam pressure is available for sound signalsAⅠ+ⅡBⅠ+ⅢCⅡ+ⅢDⅠ+Ⅱ+Ⅲ
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
单选题甲板部由大副负责。（）AThe captain is the head of a ship.BThe master is the head of a ship.CThe deck department is under the command of the chief officer.DThe pilot is the head of a ship.
单选题In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?（）ADifferentialBTrunkCBarrelDValve-in-head
单选题The amount of fluid delivered by a gear pump can be regulated by （）.Athrottling the pressure lineBchanging the speed of the rotorCeither A or BDNone of the above is true
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The pressure head of a pump is given in the unit of （）.AkgBMPaCmeter fluid columnDNone of the above is true
单选题The volute of centrifugal pump also acts as a diffuser converting （）into pressure head.Amechanical energyBheat energyCpotential energyDkinetic head