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Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）
A . Because row IDs may change during the flashback operation
B . Because the object number changes after the flashback operation
C . Because the rows are retrieved from the recycle bin during the flashback operation
D . Because the table is moved forward and back to a temporary during the flashback opertio
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Before assuming command of a vessel，the new OOW must discuss with the one being（），all important operational features of the ship.
A、 received
B、 retrieved
C、 resumed
D、 relieved
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Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except （）
A . open the indicator cocks
B . supply some LO to cylinder liner wall with lubricator
C . put the fuel handle in the "stop" position
D . pump up the air bottle
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The container operator looks forward to（）the goods before the end of this month.
A . aelivery
B . delivery of
C . our delivery
D . deliver
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The bosun has thrown the liferaft into the water before abandoning the vessel. The operating cord（）.
A . serves as a sea painter
B . detaches from the liferaft automatically
C . is used to rig the boarding ladder
D . is cut immediately as it is of no further use
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According to the ship emergency plan, when average accident happened and the captain made the decision to withdraw from the engine room before leaving the engine room, the wrong operation is that （）
A . the chief engineer leaves the engineer room with the engine room log book at first
B . releasing compressed air in the air receiver and closing the watertight door
C . stopping all the running machineries and electric devices
D . closing the quick-closing valves of all the oil tanks, stopping the boiler and releasing ga
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Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A . Electric power and starting air
B . Lube oil standby pump and control air
C . Hydraulic switch and engage jacking gear
D . Motor drain and pneumatic control system power
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You executed the following command in Recovery Manager （RMAN）： RMAN> RESTORE CONTROLFILE； Which operation must you perform before this command is executed？（）
A . back up the control file to trace
B . bring database to the MOUNT state
C . open a connection to the RMAN recovery catalog， which contains the RMAN metadata for the target database
D . set the database ID （DBID）， but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog
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You are signing on a deck officer，who will be designated as one of the GMDSS operators，before sailing foreign．Which statement is TRUE（）.
A . He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”
B . He/she must present either an FCC-issued license or a Coast Guard-issued license
C . You must consult the“List of Qualifications”on the reverse of his/her FCC-issued license
D . His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer&rdquo
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Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?（）
A . Start ventilation，lower the ramp，notify engine room
B . Lower the ramp，start ventilation，notify engine room
C . Notify engine room，lower the ramp，start ventilation
D . Start ventilation，notify engine room，lower the ram
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Which operation requires that you create an auxiliary instance manually before executing the operation？（）
A . Backup-based database duplication.
B . Active database duplication.
C . Tablespace point-in-time recovery.
D . No operation requires the creation of an auxiliary instance.
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Before the oily water separator put into operation, it should be （）
A . filled with bilge water
B . filled with oil
C . filled with clean water
D . be emptied
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A JSP page needs to perform some operations before servicing the first request. Where can this be done？（）
A . within a method called jspInit
B . within the page directive of the JSP page
C . within a scriptlet at the top of the JSP page
D . within the
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You executed the following command in Recovery Manager （RMAN）： RMAN> RESTORE CONTROLFILE； Which operation must you perform before this command is executed？（）
A . back up the control file to trace
B . bring database to the MOUNT state
C . open a connection to the RMAN recovery catalog， which contains the RMAN metadata for the target database
D . set the database ID （DBID）， but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog
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Before any machinery is put in operation，you should（）.
A . ventilate all compartments，see that the machinery is clean and there are no obstructions
B . just turn the key and start up
C . take for granted that there are no fuel leaks
D . assume there are no volatile fumes in the engine space
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You have a computer that runs Windows 7. You need to capture the operating system and all the computerconfigurations to a Windows image (WIM) file. What should you do before you capture the image?（）
A . Run Oscdimg.exe.B . Run Windows System Image Manager （Windows SIM）.C . Open a command prompt that has elevated privileges.D . Start the computer by using Windows Preinstallation Environment （Windows PE）.
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The furnace of an oil fired boiler should be （） before the operating burner is lit.
A . filled with water
B . purged
C . cleared of air
D . None of the above is true
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Before a Flashback Table operation，you execute the following command： ALTER TABLE employees ENABLE ROW MOVEMENT； Why would you need this to be executed？（）
A . Because row IDs may change during the flashback operation
B . Because the object number changes after the flashback operation
C . Because the rows are retrieved from the recycle bin during the flashback operation
D . Because the table is moved forward and back to a temporary during the flashback opertio
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_____________ work has to be done before the plant goes into operation.
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Gonzalez Company reports the following information:Net operating income after taxes $200,000Before-tax operating income $300,000Average invested capital $500,000After-tax cost of capital 10%What is the residual income for Gonzalez Company?
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The telephone operator cut us______before we finished our conversation.
A．out
B．up
C．off
D．away
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Before a Flashback Table operation, you execute the following command:ALTER TABLE employees ENABLE ROW MOVEMENT;Why would you need this to be executed？（）
A. Because row IDs may change during the flashback operation
B. Because the object number changes after the flashback operation
C. Because the rows are retrieved from the recycle bin during the flashback operation
D. Because the table is moved forward and back to a temporary during the flashback operation
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We’d better not talk about starting up a new comp any before the first one is operating smoothly, or we’ll be getting into deep _____ . 在第 一个公司未能顺利运作之前最好别谈开新公司, 否则 我们会陷于困境的
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重大操作前应（）You should （） before a major operation.
A、制订操作技术方案 formulate a technical plan for the operation
B、准备安全倒回措施prepare a rollback scheme
C、进行测试和检查 test and check
D、发布通告 release a notice
此题为多项选择题。
