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In general，the most effective period for observing stars and planets occurs during the darker limit of（）.
A . sunset
B . civil twilight
C . nautical twilight
D . astronomical twilight
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Which four occur during the processing of a request using Oracle Shared Server？（）
A . The dispatcher returns the response to the user.
B . The dispatcher places the request into the request queue.
C . The shared server places the response in the response queue.
D . The response is handed off to the next available dispatcher.
E . A shared server picks up the request from the request queue and processes the request.
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A MAC address flood attack is occurring on the LAN. During this attack， numerous frames areforwarded to a switch which causes the CAM table to fill to capacity. How does this action benefitthe attacker？（）
A . All traffic is tagged with a specific VLAN ID from the VLAN of the attacker and is now viewable
B . Clients will forward packets to the attacking device， which will in turn send them to the desireddestination but not before recording the traffic patterns
C . All traffic is redirected to the VLAN that the attacker used to flood the CAM table
D . All traffic is flooded out all ports and an attacker is able to capture all data
E . None of the other alternatives apply
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The sudden reduction of pressure occurring within the crankcase of a refrigeration compressor during starting causes the （）.
A . sudden evaporation of wax crystals in the lubricant
B . sudden evaporation of entrapped air in the lubricant
C . release of refrigerant from the oil/refrigerant mixture
D . release of dissolved lubricant from the refrigerant
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The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.
A . crack
B . knocking
C . leaking
D . seizure
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A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is a（）.
A . Papagayo
B . fall wind
C . foehn
D . williwaw
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How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）
A . Traffic is switched from the first node receiving the AIS indication.
B . Traffic is switched from the far side of the failure, allowing handshaking to occur.
C . UPSR traffic is switched from the terminating node, BLSR traffic is rerouted from the originating node in the ring.
D . UPSR traffic is switched from the terminating node, circuit by circuit. BLSR traffic is rerouted from the last reachable node in the ring.
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During the installation of the Cisco WCS version 4.0， an error occurs. Where would you look for theinstallation log， in order to learn more about this error？（）
A . in the Cisco WCS installation directory
B . at the root of the installation drive
C . in the Cisco WCS\Logs directory
D . on the desktop of the server
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You are Master of a towing vessel engaged in towing three barges astern.The middle barge of the tow would be required to sound which of the following during restricted visibility （）.
A . No fog signal
B . A prolonged blast at intervals never to exceed more than two minutes
C . A prolonged blast followed by two short blasts at intervals never to exceed more than two minutes
D . A prolonged blast followed by three short blasts at intervals never to exceed more than one minute
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What are three types of packet delays that occur in a network？ （）
A . timing
B . queuing
C . differential
D . serialization
E . packetization
F . propagatio
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A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called（）.
A . Tehuantepecer
B . Papagayo
C . Norther
D . Pampero
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Refer to the exibit. Three cisco 2950 switches are set to their default priority settings.During the spanning-tree process，which switch will be elected as the root bridge？（）https://assets.asklib.com/images/image2/2018072314082137678.jpg
A . Switch3
B . Switch4
C . Switch2
D . Switch1
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During the installation of the Cisco WCS version 4.0， an error occurs. Where would you look forthe installation log，in order to learn more about this error？（）
A . at the root of the installation drive
B . in the Cisco WCS installation directory
C . on the desktop of the server
D . in the Cisco WCS\Logs directory
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During an AIX installation, which of the following actions will occur once the Complete Overwrite option is selected?（）
A . All new disks in the system will be formatted
B . Only the contents of the root volume group destination disks will be destroyed
C . All file systems, including /(root), /tmp, /usr, and /var, but no usr data in the root volume group, will be destroyed
D . The contents of all disks on the system, even if they are not shown as the destination root volume group disks, will be destroyed
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During the installation of the Cisco WCS， an error occurs. Where will the installation log be found？（）
A . at the root of the installation drive
B . in the Cisco WCS installation directory
C . on the desktop of the server
D . in the Cisco WCS\Logs directory
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During the watch at sea, where situations occur in the machine apace which may affect the speed maneuverability, power supply or other essentials for the safe operation of the ship（）should be informed as soon as possible.
A . the chief engineer
B . the master
C . the bridge
D . the company superintendent
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In which three cases does a checkpoint occur？ （）
A . Every three minutes.
B . When a log switch occurs.
C . When forces by an administrator.
D . When a tablespace is taken offline normal.
E . When the redo buffer is one-third full.
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During flight, middle ear barotraumas occurs mainly when（ ）
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________ much is known about what occurs during sleep, the precise function ofsleep and its different stages remains largely in the realm of assumption.
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The most common side effect that may occur during insulin therapy is hyperglycemia.
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Who is required to submit a written report on a deviation that occurs during an emergency？
A、Pilot in command.
B、Dispatcher.
C、Person who declares the emergency.
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The industrial societies have been extremely productive during the last two centuries. The economic advance has been remarkable. During this relatively short period of time, greater changes in people's living conditions have occurred than in the thousands of years which preceded.
During the past 200 years the world population has increased 6 times, the annual world output has increased 80 times, and the distance a person can travel has gone up 1,000 times. There has also been much recent progress in art, culture, learning, and science. Such changes have led to a high rate of production and growth of the economy.
Economists fear that within the next 100 to 150 years, the earth's resources will become very scarce. Their fears are partly justified, but we should not be afraid. Industrial civilization adapts to new knowledge. By advancing knowledge, we not only create new forms of resources, but we also find ways to economize their use. Advanced modern knowledge can feed the hungry people of the world and improve their standard of living.
The figures in the second paragraph are used for the following purposes EXCEPT______.
A．prediction.
B．contrast.
C．definition.
D．explanation.
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Vowels which trigger [r]-insertion never trigger [j]-insertion or [w]-insertion. Each glide has its own domain, although the domains exempt short stressed vowels /e, ？, ？, ？, ？/, which never occur word-finally in English.
