单选题If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the()Aoil has a tendency to emulsify in the bowlBpurifier will act as a clarifier at the discharge ringCoil will be lost through the water discharge portsDoil solids will be deposited only at the intermediate top disk

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 bowl

B

purifier will act as a clarifier at the discharge ring

C

oil will be lost through the water discharge ports

D

oil solids will be deposited only at the intermediate top disk


参考解析

解析: 暂无解析

相关考题:

Which of the following is NOT true about the centrifugal separator? A.It can be applied to separate two liquidsB.It cannot separate solids which contaminated in the oil.C.It consists of purifier and clarifierD.The centrifuge arranged to separate two liquids is known as purifier

Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?A.The viscosity of the fuel.B.The quantity of water to be removed from the fuel.C.The specific gravity of the fuel.D.The quantity of dirt to be removed from the fuel.

If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, theA.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

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

DOS是()的缩写。 A.Disk operation SystemB.Disk SystemC.Dine Ctoryoperation SystemD.Diskette Operate System

High-speed rotation in a centrifugal purifier can produce a force ______the force of gravity.A.many thousand times larger thanB.the same asC.many thousand times smaller thanD.which has nothing to do with

When considering SAN to SAN replication between sites, which of the following is the MOST important concern?()A、 WAN link speedB、 Block sizeC、 Disk sizeD、 File system type

Which command is used to configure RMAN to perform a compressed backup for every backup executed?()A、 BACKUP AS COMPRESSED BACKUPSET DATABASEB、 BACKUP AS COMPRESSED COPY OF DATABASEC、 CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSETD、 CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS E、 BACKUP DATABASE COMPRESS

You configured the default backup device type as disk for RMAN backups. In your database,because of business requirements,you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this?()  A、 MAXSETSIZE TO 2B、 DEVICE TYPE DISK PARALLELISM 2C、 RETENTION POLICY TO REDUNDANCY 2D、 DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2

In which situations will the ASM metadata backup help you recover the ASM disk in a disk group?()A、 when one or more file directory paths are accidentally deleted from an ASM disk groupB、 when one of the disks in a disk group is accidentaly unpluggedC、 when the data file on an ASM disk group gets corruptedD、 when one or more disks in an ASM disk group are lost

DOS是()的缩写。A、Disk operation SystemB、Disk SystemC、Dine Ctoryoperation SystemD、Diskette Operate System

单选题You configured the default backup device type as disk for RMAN backups. In your database,because of business requirements,you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this?()A MAXSETSIZE TO 2B DEVICE TYPE DISK PARALLELISM 2C RETENTION POLICY TO REDUNDANCY 2D DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2

单选题The size of the discharge ring used for the efficient operation of a disk type purifier is dependent upon the()Arated capacity of that purifierBviscosity of the oil being purifiedCmaximum design speed of that purifierDspecific gravity of the oil being purified

单选题You have configured the following:  RMAN CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’; new RMAN configuration parameters:  CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’; new RMAN configuration parameters are successfully stored RMAN SHOW DEVICE TYPE; RMAN configuration parameters are: CONFIGURE DEVICE TYPE SBT PARALLELISM 1; # CONFIGURE DEVICE TYPE DISK PARALLELISM 1; #  RMAN CONFIGURE DEVICE TYPE SET PARALLELISM 5;  RMAN SHOW DEVICE TYPE; RMAN configuration parameters are: CONFIGURE DEVICE TYPE SBT PARALLELISM 5; CONFIGURE DEVICE TYPE DISK PARALLELISM 1; #  How many channels are allocated to SBT?()A0, because channels have not been defined.B3, as indicated by the degree of parallelism.C1, the default value when device is configured.D5, as indicated by the last parallelism command.

单选题In a disk-type lubricating oil purifier, ()Athe purifier driving gears are lubricated by the reclaimedBoil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling waterCsealing water must never be supplied until after oil is fed to the unitDdeterioration of the bowl ring gasket will cause the purifier to lose its water seal

单选题Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?()AThe viscosity off the fuelBThe quantity of water to be removed from the fuelCThe specific gravity of the fuelDThe quantity of dirt to be removed from the fuel

单选题Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?()AHydraulic oil pressureBServomotor actionCFlyweight centrifugal forceDRelay motion

单选题When reassembling the bowl of a disk-type centrifuge, the bowl or locking ring is rotated ().Aclockwise, due to the bowl rotating clockwiseBclockwise, due to the bowl rotating counterclockwiseCcounterclockwise, due to the bowl rotating clockwiseDcounterclockwise, due to the bowl rotating counterclockwise

单选题A centrifugal fuel oil purifier should be shut down if ()Amore sealing water is neededBthe cover clamp needs tighteningCthe purifier has a bad vibration when startedDwater is discharged from the overflow line

单选题High-speed rotation in a centrifugal purifier can produce a force () the force of gravity.Amany thousand times larger thanBthe same asCmany thousand times smallerDnone of the above

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?()AContamination of the lube oil by emulsification will resultBThe lube oil will not be subjected to the proper centrifugal forceCThe lube oil will overheat and flashDOil will discharge from the heavy phase discharge port and be wasted

单选题Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?()ACarbon particlesBLube oilCGasolineDDiesel fuel

单选题One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the ().Amotor overload will openBrelief valve will openCpump will overheatDmotor will overheat

单选题Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?()AImpuritiesBLube oilCGasolineDDiesel fuel

单选题If the engine is naturally aspirated, or is a small high-speed type with a centrifugal turbocharger, the period of valve overlap(),ie when both valves are(), will be and the exhaust valve will close some 10°top dead canter().Aopen;short;afterBclosed;short;afterCopen;long;beforeDclosed;long;before

单选题When considering SAN to SAN replication between sites, which of the following is the MOST important concern?()A WAN link speedB Block sizeC Disk sizeD File system type

单选题High-speed rotating in a centrifugal purifier can produce a force () larger than the force of gravity.Amany thousand timesBbetween timesCone timeDat times