更多"What is the function of wearing rin"的相关试题:
[单项选择]What is a function of the wearing rings used in most centrifugal pumps?（）
A. Absorb erosion of high velocity discharge stream
B. Seal pump shaft against entry of air
C. Isolate the discharge side from the suction side
D. Dampen the turbulent discharge flow
[单项选择]The piston rings if found worn out （） and supplied by shipchandler.
A. must replace
B. must to be equipped
C. has to be repaired
D. have to be renewed
[单项选择]Denebola is found in what constellation?（）
A. Hydrus
B. Leo
C. Centaurus
D. Aquila
[单项选择]Deneb is found in what constellation?（）
A. Cygnus
B. Pegasus
C. Ursa Major
D. Andromeda
[单项选择]Capella is found in what constellation? （）
A. Gemini
B. Auriga
C. Libra
D. Crab
[单项选择]Altair is found in what constellation?（）
A. Hercules
B. Cygnus
C. Aquila
D. Capricorn
[单项选择]Antares is found in what constellation?（）
A. Scorpio
B. Corvus
C. Libra
D. Corona Borealis
[单项选择]What information is NOT found in the chart title? （）
A. Survey information
B. Scale
C. Date of first edition
D. Projection
[单项选择]What will NOT be found on the Certificate of Inspection of an ocean going tanker?（）
A. Manning requirements
B. Minimum freeboard permitted
C. Grade(s) of cargoes that the vessel may carry
D. Waters upon which the vessel may be operated
[单项选择]What information is found in the chart title? （）
A. Date of the first edition
B. Date of the edition and，if applicable，the revision
C. Information on the sounding datum
D. Information on which IALA buoyage system applies
[单项选择]What alarm is NOT found on an inert gas system? （）
A. Low oxygen alarm
B. Low pressure alarm
C. Scrubber high water level alarm
D. Deck seal low water alarm
[判断题]Modern linguistics is mostly prescriptive, but sometimes descriptive.
[单项选择]Broken piston rings manifest themselves during the scavenge port inspection by（）
A. Lack of elastic tension, when the rings are pressed into the groove by means of a stick
B. Blackish appearance
C. Fractured rings and missing rings
D. all off the above
[单项选择]The piston rings are manufactured with a diameter （） the bore of the cylinder.
A. larger than
B. smaller than
C. equal to
D. none of the above
[单项选择]Improperly fitted piston rings in a diesel engine can cause（）
A. excessive lube oil consumption
B. lower than normal lube oil temperature
C. higher than normal exhaust back pressure
D. excessive crankshaft end play
[单项选择]When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of （）
A. insufficient lubrication
B. improper piston cooling
C. blow-by
D. overload operation
[单项选择]The function of the piston compression rings used in a diesel engine is to （）
A. seal the space between the piston and liner
B. transmit heat from the piston to the cylinder liner
C. reduce the amount of combustion gas blow-by
D. all of the above
[单项选择]There is actually an overlap of（）ocean regions somewhere in Western European Waters.
A. as many as three
B. more than two
C. less than two
D. up to four
[单项选择]If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）
A. excessive ring action
B. excessive ring temperature
C. improper ring rotation
D. excessive ring face wear
