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单选题
On what does the operation of an aneroid barometer depend?（）
A
Thin，metal，air tight cell
B
Curved tube containing alcohol
C
Column of mercury supported by atmospheric pressure
D
Expansion of mercury in a closed tube
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In a switched environment, what does the IEEE 802.1Q standard describe?()
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The purpose of the "set" hand on an aneroid barometer is to ______.A.adjust the barometerB.indicate any change in the reading of the barometerC.provide a correction for height above sea levelD.provide a correction for temperature changes
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A mercurial barometer at sea is subject to rapid variations in height ("pumping") due to the pitch and roll of the vessel. To avoid this error，measurements of atmospheric pressure at sea are usually measured with a(n) ______.A.syphon barometerB.cistern barometerC.aneroid barometerD.fortin barometer
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You are located within a stationary high pressure area．Your aneroid barometer is falling very slowly．This indicates a（n）______．A.Wind shift of 180°B.Large increase in wind velocityC.Decrease in the intensity of the systemD.Increase in the intensity of the system
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A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?（）A、It performs a label pop operation and an IP lookup.B、It performs a label swap operation and an IP lookup.C、It sends an error message toward the egress router.D、It sends an error message toward the ingress router.
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Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to record thestatus of the operation?（）A、ADD DIRECTORYB、DROP DISKC、RESIZE DISKD、REBALANCEE、ADD FAILGROUP
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单选题In describing engine operation, what does the term “cycle” mean?（）A
The sequence of events that produce a power pulseB
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单选题Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to record the status of the operation？（）A
ADD DIRECTORYB
DROP DISKC
RESIZE DISKD
REBALANCEE
ADD FAILGROUP
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单选题An aneroid barometer reading should be corrected for differences in（）.A
elevationB
temperatureC
wind speedD
latitude
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单选题An aneroid barometer on a boat should always be（）.A
located in an air-conditioned areaB
mounted in the passenger compartmentC
protected by a collision bulkheadD
permanently mounted
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单选题Prior to reading an aneroid barometer，you should tap the face lightly with your finger to（）.A
expose any loose connectionsB
demagnetize the metal elementsC
bring the pointer to its true positionD
contract and expand the glass face
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单选题The purpose of the “set” hand on an aneroid barometer is to（）.A
adjust the barometerB
indicate any change in the reading of the barometerC
provide a correction for height above sea levelD
provide a correction for temperature changes
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单选题An aneroid barometer is an instrument（）.A
used to measure the speed of windB
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单选题Examine the command： ALTER DATABASE ADD SUPPLEMENTAL LOG DATA （PRIMARY KEY） COLUMNS； What does the command accomplish？（）A
Creates an additional copy of the database online redo log files. B
Stores the primary key column values of each row involved in a DML operation in the online redo log files. C
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单选题Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to record thestatus of the operation?（）A
ADD DIRECTORYB
DROP DISKC
RESIZE DISKD
REBALANCEE
ADD FAILGROUP
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单选题The successful operation of any engine or machine and （） depend on effective lubrication.A
their no trouble periodB
their freely trouble periodC
its free trouble lifeD
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考题
单选题In a switched environment, what does the IEEE 802.1Q standard describe?（）A
the operation of VTPB
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It performs a label swap operation and an IP lookup.C
It sends an error message toward the egress router.D
It sends an error message toward the ingress router.
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WhenC
BecauseD
Even though
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