单选题Which of the following statements is correct with regards to the operation of a centrifugal cargo pump?（）AOil is discharged from the impeller through the outletBGravity causes the oil to flow toward the dischargeCThe self-priming feature of the centrifugal pump enables it to draw its own suction as it startsDThe discharge capacity varies directly with the speed of the impeller
单选题
Which of the following statements is correct with regards to the operation of a centrifugal cargo pump?（）
A
Oil is discharged from the impeller through the outlet
B
Gravity causes the oil to flow toward the discharge
C
The self-priming feature of the centrifugal pump enables it to draw its own suction as it starts
D
The discharge capacity varies directly with the speed of the impeller
参考解析
解析：
暂无解析
相关考题：
●Which of the following statements about object oriented database is not correct? (72) ．(72) A．Each object has a unique object identify in the systemB．Encapsulation and inheritance are two important features of object oriented databaseC．A subclass can inherit the attributes and methods of all its superclassesD．A supereloss includes the attributes and methods at all subclasses
15 Which of the following statements about intangible assets are correct?1 If certain criteria are met, research expenditure must be recognised as an intangible asset.2 Goodwill may not be revalued upwards.3 Internally generated goodwill should not be capitalised.A 2 and 3 onlyB 1 and 3 onlyC 1 and 2 onlyD All three statements are correct
18 Which of the following statements about accounting ratios and their interpretation are correct?1 A low-geared company is more able to survive a downturn in profit than a highly-geared company.2 If a company has a high price earnings ratio, this will often indicate that the market expects its profits to rise.3 All companies should try to achieve a current ratio (current assets/current liabilities) of 2:1.A 2 and 3 onlyB 1 and 3 onlyC 1 and 2 onlyD All three statements are correct
19 Which of the following statements about intangible assets in company financial statements are correct accordingto international accounting standards?1 Internally generated goodwill should not be capitalised.2 Purchased goodwill should normally be amortised through the income statement.3 Development expenditure must be capitalised if certain conditions are met.A 1 and 3 onlyB 1 and 2 onlyC 2 and 3 onlyD All three statements are correct
22 Which of the following statements about limited liability companies’ accounting is/are correct?1 A revaluation reserve arises when a non-current asset is sold at a profit.2 The authorised share capital of a company is the maximum nominal value of shares and loan notes the companymay issue.3 The notes to the financial statements must contain details of all adjusting events as defined in IAS10 Events afterthe balance sheet date.A All three statementsB 1 and 2 onlyC 2 and 3 onlyD None of the statements
12 Which of the following statements are correct?(1) Contingent assets are included as assets in financial statements if it is probable that they will arise.(2) Contingent liabilities must be provided for in financial statements if it is probable that they will arise.(3) Details of all adjusting events after the balance sheet date must be given in notes to the financial statements.(4) Material non-adjusting events are disclosed by note in the financial statements.A 1 and 2B 2 and 4C 3 and 4D 1 and 3
Which of the following statements about internet is (are) correct?Ⅰ.Each host in internet only has a IP address.Ⅱ.It is possible to have multiple names corresponding to the same IP address.Ⅲ.In users' points, Internet means a virtual network.A．NoneB．Ⅰ and ⅡC．Ⅱ and ⅢD．All
In the following statements about graph operations，which one is NOT correct?A．Finding critical path is an operation on directed graphB．Finding critical path is an operation on undirected graphC．Spanning tree of a graph may not be uniqueD．Minimum spanning tree of a graph may not be unique
Which of the following statements about ORACLE is (are) correct?Ⅰ.ORACLE follows SQL standardⅡ.ORACLE database defines two logical types: table and viewA．ⅠonlyB．Ⅱ onlyC．Ⅰ and ⅡD．none of the above
Which of the following statements is correct regarding an oil with a high viscosity index?A.A large change of viscosity occurs with a minor change in temperatureB.No change in viscosity occurs with any change in temperatureC.Very little change in viscosity occurs with a significant change in temperatureD.The viscosity of the oil increases with an increase in temperature
Your database is up and running and one of your three control files is accidentally erased. You start RMAN and run the following command： RESTORE CONTROLFILE FROM AUTOBACKUP； Which of the following statements is true？（） A、 The command restores only the missing control file.B、 The command restores all the control files.C、 The command fails because the database is running.D、 This is the correct way to address this problem.E、 This is not the correct way to address this problem.
Which of the following are correct statements？（）A、EIGRP advertises the best routes to its neighborB、EIGRP uses "cost" to determine best pathC、EIGRP allows unequal cost load balancingD、OSPF requires neighbor adjacencies before updates are sentE、EIGRP advertises all routes to its neighborF、OSPF allows unequal cost load balancing
Which of the following statements is correct regarding a hybridcrypto system？（）A、 uses symmetric crypto for keys distributionB、 uses symmetric crypto for proof of originC、 uses symmetric crypto for fast encrypted/decryptionD、 uses asymmetric crypto for message confidentialityE、 uses symmetric crypto to transmit the asymmetric keys that is thenused to encrypt a session
Which of the following is the correct term for a virtual machine？（）A、 HypervisorB、 Guest OSC、 Virtual CenterD、 Host OS
单选题Which of the following statements concerning energy is correct?（）AEnergy can be created or destroyedBEnergy may not be transformedCThe total quantity of energy in the universe is always the sameDNone of the above
多选题Your database is up and running and one of your three control files is accidentally erased. You start RMAN and run the following command： RESTORE CONTROLFILE FROM AUTOBACKUP； Which of the following statements is true？（）AThe command restores only the missing control file.BThe command restores all the control files.CThe command fails because the database is running.DThis is the correct way to address this problem.EThis is not the correct way to address this problem.
单选题Which of the following statements is correct with regards to the operation of a centrifugal cargo pump?（）AOil is discharged from the impeller through the outletBGravity causes the oil to flow toward the dischargeCThe self-priming feature of the centrifugal pump enables it to draw its own suction as it startsDThe discharge capacity varies directly with the speed of the impeller
单选题Which of the following statements concerning cargo is correct?（）ACargoes are any type of goods transported by any type of shipsBCargoes are goods transported in bulkCCargoes usually include goods transported in bulk and in containersDCargoes are usually packaged in containers
单选题Which of the following statements concerning fire-tube boilers is correct?（）ACombustion gases flow through the tubesBFlames impinge on the tubesCCombustion occurs in the tubesDWater flows through the tubes
单选题Which of the following statements is correct concerning the “flash point ” of a liquid?（）AIt is lower than the ignition temperatureBIt is the temperature at which a substance will spontaneously igniteCIt is the temperature at which a substance, when ignited, will continue to bumDIt is the temperature at which the released vapors will fall within the explosive range
单选题Which of the following statements about general cargoes is not correct?（）AGeneral cargoes are neither liquid nor solid bulk cargoBGeneral cargoes are packaged hazardous cargoesCGeneral cargoes are also called breakbulk cargoesDGeneral cargoes are mostly carried on container ships now
单选题Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?（）AThe greater the atomization, the greater the penetrationBThe greater the atomization, the less the penetrationCThe degree of atomization has nothing to do with the degree of penetrationDAtomization and penetration are one and the same
单选题Which one of the following statements about the TNSPING utility is correct？（）AIt helps you to determine whether or not the Oracle database is running.BIt requires the username and password to check the connectivity of the service.CIt does not require the username and password to check the connectivity of the service.DIt establishes a session with the database and checks the connectivity of the service.
单选题Which of the following statements is correct concerning the viscosity of lubricating oil?（）AViscosity will increase as temperature increasesBViscosity is a measure of a fluid s internal resistance to flowCViscosity will decrease as temperature decreasesDViscosity is not dependent on temperature
单选题Which of the following statements is correct regarding an oil with a high viscosity index?（）AA large change of viscosity occurs with a minor change in temperatureBNo change in viscosity occurs with any change in temperatureCVery little change in viscosity occurs with a significant change in temperatureDThe viscosity of the oil increases with an increase in temperature
单选题Which of the following statements is correct relative to distillation plant operation?（）ADistillation is the process of boiling seawater to produce vapor which is condensed into fresh waterBEvaporation is the second part of the distillation process where brine is removedCBrine is the result of condensed sea water vaporDDistillate is the product resulting from the evaporation of fresh water vapor