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考题
In which situation you should NOT offer the drinks to the patient? ()
A. The patient is in the toiletB. The patient is ‘nil by mouth’C. The patient is ‘fluid limited’D. the patient is on fluid
考题
Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).A.overload on the pump motorB.low fluid level in the reservoirC.low fluid viscosity around the shaft sealD.high oil level in the sump
考题
Before doing any work on a hydraulic system equipped with accumulators, you shouldA.drain the accumulators and purge with oxygenB.bleed off all stored energy from the accumulators completelyC.charge the accumulators to prevent system energy lossD.pump the hydraulic fluid into the accumulators to prevent fluid loss
考题
Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ______.A.fluid frictionB.fluid turbulenceC.component misalignmentD.pressure surges
考题
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead ______.A.penetrationsB.platingC.framingD.brackets
考题
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
考题
We are worried about this fluid situation full with uncertainty.A. changeable
B. stable
C.suitable
D.adaptable
考题
We are worried about this 【fluid】 situation full with uncertainty.A.stable
B.suitable
C.changeable
D.adaptable
考题
单选题The most common contaminate of governor hydraulic fluid is （）.A
moistureB
dirtC
acidD
air
考题
单选题A fluid coil will （） large quantifies of heat when it changes state from a liquid to a vapor.A
releaseB
absorbC
developD
regenerate
考题
单选题Compensated flow control or constant flow valves are used in hydraulic systems to（）A
compensate for major leaks in the systemB
maintain the original fluid viscosityC
allow for changes in pressure and temperature within the systemD
assure constant fluid temperature
考题
单选题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
考题
单选题If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.A
add fluid that is the same color as the fluid in the reservoirB
add turbine oil because it is always a good substituteC
add any oil that has the same viscosity as the hydraulic fluidD
check the winch manufacturers instruction book
考题
单选题Before doing any work on a hydraulic system equipped with accumulators, you should（）A
drain the accumulators and purge with oxygenB
bleed off all stored energy from the accumulators completelyC
charge the accumulators to prevent system energy lossD
pump the hydraulic fluid into the accumulators to prevent fluid loss
考题
单选题A hydraulic accumulator is designed to（）.A
store fluid under pressureB
act as a fluid reservoirC
provide overpressure reliefD
replenish fluid to a system
考题
单选题In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon（）A
the temperature of the hydraulic fluidB
the flow rate of the hydraulic fluidC
the temperature of the cooling waterD
all of the above
考题
单选题The pressure head of a pump is given in the unit of （）.A
kgB
MPaC
meter fluid columnD
None of the above is true
考题
单选题An orifice-check valve placed in a hydraulic system is used to（）A
regulate the fluid flow in either directionB
restrict movement of hydraulic fluid in one direction, but allow free movement in the other directionC
allow free movement of hydraulic fluid in both directionsD
allow a restricted fluid flow in one direction only
考题
单选题Which of the following statements about pump operations is NOT a correct statement?（）A
In order for a fluid to be pumped, a fluid must be made to flowB
A substance must be cold in order for it to be pumpedC
The kinetic energy imparted by the pump can be used to force a liquid through a hydraulic systemD
A pump must receive its energy from an external source
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