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To correct the condition of slugging and flooding back in a refrigeration system, it may be necessary to （）.
A . re-adjust the discharge pressure
B . clean the expansion valve screen
C . add refrigerant
D . adjust the expansion valve
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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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Progressive flooding may be indicated by（）.
A . ballast control alarms
B . excessive draft
C . excessive list or trim
D . a continual worsening of list or trim
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Your vessel is damaged with no list，but down by the stern. There is progressive flooding and trim by the stern is increasing. What is the effect on transverse stability after the deck edge at the stern is submerged?（）
A . KB increases，increasing BM and therefore GM
B . KG increases due to the weight of the added water on deck
C . BM decreases from loss of water plane and greater volume
D . There is no effect on transverse stability
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A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.
A . increasing the righting moment
B . decreasing the vessel's displacement
C . increasing the reserve buoyancy
D . shifting the CG（center of gravity）off center
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The stability which remains after a compartment is flooded is called（）.
A . intact stability
B . initial stability
C . immersion stability
D . damage stability
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Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server（）。
A . denial of service
B . brute force
C . reconnaissance
D . Trojan horse
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Flooding of any compartment in a ship that results in a serious loss of reserve buoyancy will always（）.
A . increase the ttrim
B . increase ship stability
C . cause a serious list
D . decrease the heeling moment
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A GROUP OF CREW MEMBERS TRAINED FOR FIGHTING FLOODING IN THE VESSEL are known as（）.
A . Fire party
B . Deck cadets
C . Research team
D . Damage control team
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_____________the flood, the ship would have reached its destination on time.
A、But for
B、In case of
C、In spite of
D、Because of
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The C02 flooding system is actuated by a sequence of steps which are（）.
A . break glass，pull valve，break glass，pull cylinder control
B . sound evacuation alarm，pull handle
C . open bypass valve，break glass，pull handle
D . open stop valve，open control valve，trip alarm
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You suspect that a hacker may be performing a MAC address flooding attack somewhere within the network. Which description correctly describes a MAC address flooding attack？（）
A . The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
B . Frames with unique， invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.
C . The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.
D . The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.
E . The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
F . Frames with unique， invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.
G . None of the other alternatives apply
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Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server？（）
A . denial of service
B . brute force
C . reconnaissance
D . Trojan horse&e
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“Flooding back” is a condition where the liquid refrigerant （）.
A . vaporizes in the condenser
B . reaches the compressor through the suction line
C . flashes in the liquid line
D . condenses in the receiver
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They（）the flood after a heroic fight lasting five days and four nights.
A . conquered
B . combated
C . won
D . withdrew
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The stability of a semisubmersible ship would be seriously reduced if flooding occurred in the（）.
A . submerged hulls
B . column void spaces
C . dry mud tanks
D . ballast tank
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With the help of the government ， a large number of people ---_______ after the flood in 1991.
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Irish in a New World was the flood of Irish into the ().
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The floods were a _______ from which the local people never recovered.
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64. When treating a chemical burn, you should flood the burned area for at least ____.
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Radical Republicans, aware that newly freed slaves would face subtle_________, passed a series of progressive laws and amendments in Congress that protected blacks’ rights under federal and constitutional law.
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Desperately short of living space and dangerously prone to flooding, the Netherlands plans to start building homes, businesses and even roads on water.
With nearly a third of the country already covered by water and half of its land mass below sea level and constantly under threat from rising waters, the authorities believe that floating communities may well be the future.
Six prototype wooden and aluminum floating houses are already attached to something off Amsterdam, and at least a further 100 are planned on the same estate, called Ijburg
"Everybody asks why didn't we do this kind of thing before," said Gijsbert Van der Woerdt, director of the firm responsible for promoting the concept. "After Bangladesh we're the most densely populated country in the world. Building space is scarce and government studies show that we'll need to double the space available to us in the coming years to meet all our needs."
Before being placed on the water and moved into position by tugboats (拖船), the houses are built on land atop concrete flat-bottomed boats, which encase giant lumps of polystyrene (聚苯乙烯) reinforced with steel. The flat-bottomed boats are said to be unsinkable and are anchored by underwater cables. The floating roads apply the same technology.
The concept is proving popular with the Dutch. "The waiting list for such homes, which will cost between euros 200,000-500,000 to buy, runs to 5,000 names," claims Van der Woerdt.
With much of the country given over to market gardening and the intensive cultivation of flowers, planners have also come up with designs for floating greenhouses designed so that the water beneath them irrigates the plants and controls the temperature inside.
A pilot project, covering 50 hectares of flooded land near Amsterdam's Schiphol airport, is planned for 2005.
The opportunities for innovative developers look promising. "We have 10 projects in the pipeline- floating villages and cities complete with offices, shops and restaurants," Van der Woerdt said.
The Netherlands plans to start building floating communities on water because ______
A．most parts of the country are covered by water
B．the country is constantly threatened by floods
C．it will promote the cultivation of flowers
D．people think it better to live on water
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On March 17, 136, rain combined with melting snows caused flooding, closing all of the streetcar lines. The Stonycreek washed out much of the Windber line; the Coopersdale car house was under five feet of water; 10 cars were trapped on the city streets;an
A．Y
B．N
C．NG
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Someone must have left the tap on,____ the water was running over and flooding the kitchen.
A．therefore
B．for
C．because
D．nevertheless
