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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?（）
- A、lslp -a
- B、qchk -A
- C、enq -s ALL
- D、lpstat -p ALL
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更多 “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?（）A、lslp -aB、qchk -AC、enq -s ALLD、lpstat -p ALL” 相关考题
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Which statement about pneumatic chipping tools is TRUE ________．A.The operator must wear safety goggles or glassesB.The equipment must be grounded to prevent shock hazardC.The chipping mechanism is made of a non-sparking material that is safe to use near explosive atmospheresD.The needles of the needle-type chipping gun must be replaced when they have been blunted more than 1/2 of their diameter
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Which statement is true regarding the INTERSECT operator?（）A、It ignores NULL values B、Reversing the order of the intersected tables alters the result C、The names of columns in all SELECT statements must be identical D、The number of columns and data types must be identical for all SELECT statements in the query
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Which of the following is a prerequisite for running DBMS_TDB.CHECK_DB to a successful completion？（）A、 The database must be in read-write mode.B、 The database must have no external files.C、 The database must open in read-only mode.D、 The database must be mounted but not opened.
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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?（）A
lslp -aB
qchk -AC
enq -s ALLD
lpstat -p ALL
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Mate's licenseB
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单选题An operator just completed a repair to a disk subsystem that contains a disk heartbeat. Before returning the system back into production mode， there is a requirement to verify the disk heartbeat is functioning. How should the operator determine if the disk heartbeat network functioning？（）A
Use the clinfo command to monitor the disk heartbeatB
Use the mail command to check for messages form HACMPC
Use the dhbread command to verify the disk heartbeat linkD
Use the clstat command to verify the appropriate network connections are available
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Advise the tape operator to review the hardware service guide.B
Use the diag command to set the Ethernet adapter slot LED to flash.C
Advise the tape operator to check the WWN stickers of all Ethernet adapter in the I/O drawers.D
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单选题Which statement is true regarding the INTERSECT operator?（）A
It ignores NULL values B
Reversing the order of the intersected tables alters the result C
The names of columns in all SELECT statements must be identical D
The number of columns and data types must be identical for all SELECT statements in the query
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a representative of the Captain of the PortB
the operator of the vessel or facilityC
a representative of the National Cargo BureauD
low inert gas temperature
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单选题Hoses used for cargo transfer operations must be tested abdinspected at specified intervals by （）.A
a representative of the Captain of the PortB
the operator of the vessel or facilityC
a representative of the National Cargo BureauD
a representative of the American Bureau of Shipping
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单选题Which of the following is a prerequisite for running DBMS_TDB.CHECK_DB to a successful completion？（）A
The database must be in read-write mode.B
The database must have no external files.C
The database must open in read-only mode.D
The database must be mounted but not opened.
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that all personnel are seated in the craftB
that the cable has not jumped any grooves on the drumC
which way the wind is blowingD
the hydraulic fluid level before lifting
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单选题Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition.A
blocksB
goosenecksC
tackleD
guys
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单选题Open ullage holes in tanks which are not gas-free must be protected by（）.A
PV valvesB
warning signsC
flame screensD
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单选题In order to discharge a C02 portable fire extinguisher , the operator must first（）.A
invert the CO extinguisherB
squeeze the two trigger handles togetherC
remove the locking pinD
open the discharge valve
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