Which maintenance functions can a GMDSS Radio Operator perform ________．A.The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percentB.The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstaclesC.All levels of maintenance must be performed by a licensed GMDSS Radio MaintainerD.The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
Which maintenance functions can a GMDSS Radio Operator perform ________．
A.The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B.The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C.All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D.The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
相关考题：
Which of the following can an operator use to shutdown a system into single－user mode?() A.shutdown -dB.shutdown -sC.shutdown -mD.shutdown -Fr -s 1
What is the minimum requirement of a GMDSS operator?A.GMDSS operator licenseB.Third officer licenseC.General Radiotelephone Operator license and Radar EndorsementD.General Radiotelephone license or First or Second Class Radiotelegraph license with GMDSS Radio Officer’s endorsement
Which of the following statements is TRUE regarding crane operations ________．A.Radio communications allow the crane operator to disregard the use of hand signalsB.The crane operators and signalman must be familiar with the correct hand signalsC.The forward cranes can be operated from the bridgeD.The aft cranes can be operated from the aft steering station
If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens ________．A.The transmission is aborted and an alarm sounds to indicate this data must be provided by the operatorB.The transmission is not initiated and“ERROR”is indicated on the display readoutC.The transmission will be made with“default”information provided automaticallyD.The receiving station will poll the DSC unit of the vessel in distress to download the necessary information
When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning ______．A.The safety of navigation or important meteorological warningsB.The safety of a vessel or a person is in jeopardyC.A vessel in need of immediate assistanceD.A coast station traffic list
Which message categories cannot be disabled by the GMDSS radio operator ________．A.Navigational WarningsB.Meteorological WarningsC.Search and Rescue InformationD.All of the above
Which statement concerning GMDSS Radio Operator requirements is FALSE ________．A.Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at seaB.Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as wellC.Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communicationsD.While at sea，adjustments to，and the maintaining of，GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer
Which statement is generally correct regarding the maintenance requirements for ships under GMDSS ________．A.Redundancy of functions of certain equipment will partially meet this requirementB.On-board maintenance provided by a person holding a GMDSS maintainer's license will partially meet the requirementsC.Shoreside maintenance and scheduled tests and inspections will partially meet this requirementD.All of the above
Which three statements about subqueries are true?（）A、A single row subquery can retrieve only one column and one row.B、A single row subquery can retrieve only one row but many columns.C、A multiple row subquery can retrieve multiple rows and multiple columns.D、A multiple row subquery can be compared by using the “” operator.E、A single row subquery can use the IN operator.F、A multiple row subquery can use the “=” operator.
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）A、 ISR can perform the functions of a multipoint control unit to facilitate voice conferencing.B、 ISR can perform the function of a call agent in the event of loss of communication with a CallManager.C、 ISR can provide XML applications to the phones.D、 ISR can provide all of the functionality of a CallManager in the event of loss ofcommunication to the CallManager.E、 ISR can act as a voice gateway to the PSTN.
Which of the following can an operator use to shutdown a system into single-user mode?（）A、shutdown -dB、shutdown -sC、shutdown -mD、shutdown -Fr -s 1
An operator wants to move all files inside the directory /home/operator to the current directory. Which of the following commands will complete the task?（）A、mv /home/operator .B、mv /home/operator/* .C、mv /home/operator ../..D、mv /home/operator/all ../home/operator
Which of the following commands can an operator use to view disk performance details?（）A、topas -DB、topas -RC、topas -CD、topas -d
Which two statements are true regarding subqueries? （）A、A subquery can retrieve zero or more rows B、Only two subqueries can be placed atone level C、A subquery can be used only in SQL query statements D、A subquery can appear on either side of a comparison operator E、There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement
Which statement is true regarding subqueries?（）A、The LIKE operator cannot be used with single-row subqueries B、The NOT IN operator is equivalent to IS NULL with single-row subqueries C、=ANY and =ALL operators have the same functionality in multiple-row subqueries D、The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries
单选题What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）ANo action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequencyBThe operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was receivedCThe Operator should immediately set continuous watch on VHF channel 70DThe Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
单选题Which of the following statements is TRUE regarding crane operations（）.ARadio communications allow the crane operator to disregard the use of hand signalsBThe crane operators and signalman must be familiar with the correct hand signalsCThe forward cranes can be operated from the bridgeDThe aft cranes can be operated from the aft steering station
单选题An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?（）Alslp -aBqchk -ACenq -s ALLDlpstat -p ALL
单选题Which statement is true regarding subqueries?（）AThe LIKE operator cannot be used with single-row subqueries BThe NOT IN operator is equivalent to IS NULL with single-row subqueries C=ANY and =ALL operators have the same functionality in multiple-row subqueries DThe NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries
单选题Which message categories cannot be disabled by the GMDSS radio operator（）.ANavigational WarningsBMeteorological WarningsCSearch and Rescue InformationDAll of the above
单选题Which statement concerning GMDSS Radio Operator requirements is FALSE（）.AEach compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at seaBEach compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as wellCCommunications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communicationsDWhile at sea，adjustments to，and the maintaining of，GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer
单选题The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.AMate's licenseBRestricted radiotelephone operator permitCSecond-class radio operator's licenseDSeaman's document
多选题Which three statements about subqueries are true?（）AA single row subquery can retrieve only one column and one row.BA single row subquery can retrieve only one row but many columns.CA multiple row subquery can retrieve multiple rows and multiple columns.DA multiple row subquery can be compared by using the operator.EA single row subquery can use the IN operator.FA multiple row subquery can use the = operator.
单选题Which statement is generally correct regarding the maintenance requirements for ships under GMDSS（）.ARedundancy of functions of certain equipment will partially meet this requirementBOn-board maintenance provided by a person holding a GMDSS maintainer's license will partially meet the requirementsCShoreside maintenance and scheduled tests and inspections will partially meet this requirementDAll of the above
单选题When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning（）.AThe safety of navigation or important meteorological warningsBThe safety of a vessel or a person is in jeopardyCA vessel in need of immediate assistanceDA coast station traffic list
单选题Which maintenance functions can a GMDSS Radio Operator perform（）.AThe Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percentBThe Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstaclesCAll levels of maintenance must be performed by a licensed GMDSS Radio MaintainerDThe Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints