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单选题
After Venus passes the point of greatest elongation east in its orbit，the first position in which the elongation will be zero is（）.
A
superior conjunction
B
inferior conjunction
C
opposition
D
None of the above; the elongation will never be zero
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考题
A SEAMARK，I.E.A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G.A WRECK is ______.A.Entrance buoyB.New buoyC.Port buoyD.Cardinal buoy
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When is the BA Classifier engaged for identifying the forwarding class of traffic in a Juniper router?()
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After a cold front passes，the barometric pressure______．A.drops，and the temperature dropsB.drops ， and the temperature risesC.rises，and the temperature dropsD.rises，and the temperature rises
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单选题As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.A
increaseB
decreaseC
remain unchangedD
be greatest at dew point
考题
单选题On the south and the east coasts of Block Island are circles with a dot in the center and labeled CUP. This is a （）.A
conspicuous objectB
steep depression in the surrounding hills that resembles a cupC
domed structure useful for navigationD
calling-up-point used for traffic control
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单选题John Preston was tired（）living in east London, in which he had moved after his wife's death.A
toB
ofC
atD
for
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填空题In the xy-plane, the graph of y = 2x2 + hx - 6 passes through the point (-3, -21), what is the value of h ?____
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单选题Mars will not be visible（）.A
at elongation angles near 180°B
from quadrature to oppositionC
at conjunctionD
at opposition
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单选题Why should you back up a duplicated tablespace after a TSPITR is complete？（）A
The tablespace cannot be duplicated or restored to any point in time after the duplication. B
The tablespace cannot be duplicated or restored to the point in time before the duplication. C
The entire database cannot be restored after a TSPITR， so a backup is required.D
You cannot bring the tablespace online until its been backed up.E
There is no requirement to do so， as RMAN will back up the tablespace after the TSPITR.
考题
单选题Point Judith Harbor of Refuge（）.A
is used mostly by towing vesselsB
has a maximum depth of 14 feet (4.3 meters) at MHWC
West Gap has a controlling depth of 24 feetD
is entered through the East Gap or the West Gap
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After the memory is installedB
Before the upgrade is performedC
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单选题（）is a point midway between the forward and the after perpendicular.A
Length overallB
After perpendicularC
AmidshipsD
Extreme breadth
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单选题The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the （）A
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exhaust and intake valves just closingC
maximum compression is just being attainedD
fuel injection occurring at that point and combustion begins
考题
单选题（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.A
Half lengthB
Mid-bodyC
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考题
单选题To perform a database point-in-time recovery using RMAN， after database restoration， you must ensure that the database is in which of the following states？（）A
OPENB
MOUNTC
NOMOUNTD
CLOSE
考题
单选题Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）A
increase engine powerB
increase engine loadC
decrease engine powerD
improve fuel economy
考题
单选题After a cold front passes the barometric pressure usually（）.A
fluctuatesB
remains the sameC
remains the same，with clouds forming rapidlyD
rises，often quite rapidly，with clearing skies
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单选题After a cold front passes，the barometric pressure（）.A
drops，and the temperature dropsB
drops，and the temperature risesC
rises，and the temperature dropsD
rises，and the temperature rises
考题
单选题A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.A
Entrance buoyB
New buoyC
Port buoyD
Cardinal buoy
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