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单选题
When reassembling the bowl of a disk-type centrifuge, the bowl or locking ring is rotated （）.
A
clockwise, due to the bowl rotating clockwise
B
clockwise, due to the bowl rotating counterclockwise
C
counterclockwise, due to the bowl rotating clockwise
D
counterclockwise, due to the bowl rotating counterclockwise
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更多 “单选题When reassembling the bowl of a disk-type centrifuge, the bowl or locking ring is rotated （）.A clockwise, due to the bowl rotating clockwiseB clockwise, due to the bowl rotating counterclockwiseC counterclockwise, due to the bowl rotating clockwiseD counterclockwise, due to the bowl rotating counterclockwise” 相关考题
考题
— Do you have to bow when you meet someone in Japan? — () .
A.Definitely.It's the custom to hold the bowl in one hand.B.Yeah.Depending on the situation, it's polite to do so.C.Yes, you never arrive later than the scheduled time.
考题
When during separation solids and water accumulate in the solids holding space, the iquid seal is displaced to the bowl
A.interfacerB.brimC.peripheryD.center
考题
For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the _______.A.bowl peripheryB.bowl centerC.upper surfaceD.lower surface
考题
When a clarifier is running the impurities and water collect at the bowl _____.A.centerB.peripheryC.inletD.upper parts
考题
In Chinese when someone breaks a bowl or a plate, the host or the people present are likely to say ---碎碎（岁岁平安）as a means of controlling the forces which they believe feel might affect their lives. Which function does it perform?A.Interpersonal
B.Emotive
C.Performative
D.Recreational
考题
单选题Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is at a （）.A
high temperature and a high viscosityB
high temperature and a low viscosityC
low temperature and a high viscosityD
low temperature and a low viscosity
考题
单选题If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the（）A
oil has a tendency to emulsify in the bowlB
purifier will act as a clarifier at the discharge ringC
oil will be lost through the water discharge portsD
oil solids will be deposited only at the intermediate top disk
考题
单选题To start the ejection process the oil feed to the centrifuge is first shut off and the oil remaining in the bowl removed by admitting （）.A
flashing waterB
operating oilC
flushing waterD
sealing water
考题
单选题On board supply vessels, a centrifuge is normally used to purify（）A
cooling waterB
fuel oilC
sea waterD
diesel intake air
考题
单选题“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）A
a centrifugeB
an electric motorC
a bowl assemblyD
a driving motor
考题
单选题In a disk-type lubricating oil purifier, （）A
the purifier driving gears are lubricated by the reclaimedB
oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling waterC
sealing water must never be supplied until after oil is fed to the unitD
deterioration of the bowl ring gasket will cause the purifier to lose its water seal
考题
单选题A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）A
GasolineB
WaterC
Lubricating oilD
sulphur compounds
考题
单选题A centrifuge of which the bowl is arranged as the upper and lower parts separate discharges the sludge（）A
by opening the separator manuallyB
by separating the lower part from the upper part automaticallyC
by separating the upper part from the lower part automaticallyD
continuously
考题
单选题Which of the following problems will occur if a disk-type centrifugal lube oil purifier is not properly primed prior to admitting oil flow to the bowl?（）A
Contamination of the lube oil by emulsification will resultB
The lube oil will not be subjected to the proper centrifugal forceC
The lube oil will overheat and flashD
Oil will discharge from the heavy phase discharge port and be wasted
考题
单选题The position of the interface between oil and water within the centrifuge is achieved by the use of （）.A
gravity discB
centrifugal bowlC
a stack of discsD
main sealing ring
考题
单选题Clean oil is achieved in a clarifier bowl where the impurities and water collect at the bowl （）.A
bottomB
topC
centerD
periphery
考题
单选题If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should（）A
remove the discharge ringB
re-prime the purifierC
the centrifuge to its proper speedD
install an additional discharge ring
考题
单选题When a clarifier is running the impurities and water collect at the bowl （）.A
centerB
peripheryC
inletD
upper parts
考题
单选题The （） of an oil refers to its ability to mix with water and then release the water in a centrifuge.A
oxidation resistanceB
carbon-forming tendencyC
demulsibilityD
acidity
考题
单选题A centrifuge arranged to separate two liquids is known as （）.A
an oily water separatorB
a purifierC
a centrifugal compressorD
a clarifier
考题
单选题To center a compass bowl in its binnacle，you should have the ship on an even keel，heading north or south，and adjust the screws until（）.A
the compass heading is in line with the lubber's lineB
there is no lost motion in the gimbal ringsC
no change of heading by compass is observed if you raise and lower the heeling magnetD
the gimbal rings do not strike the compass frame when they are tilted
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