Why is QoS important in a converged network?（）
A . Because data does not need to arrive intact, so data transfer rates can be variable
B . Because lost voice-data packets must be retransmitted
C . Because voice data packets should arrive quickly and sequentially, and with no lost data
D . Because voice data packets must follow a single dedicated path through the network
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The order of importance in addressing damage control on a ship is（）.
A . control flooding，control fire，repair structural damage
B . restore vital services，control fire，control flooding
C . control fire，restore vital services，control flooding
D . control fire，control flooding，repair structural damage
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What is the goal of QoS in a network？ （）
A . prevent packets from being dropped
B . increase available bandwidth
C . reduce hardware errors
D . provide predictable network service
E . eliminate propagation delay
F . eliminate jitter and packet lo
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In order to keep students interested in learning English it is important to include a variety of activities and techniques in the lesson.（）
A . 正确
B . 错误
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An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to （）
A . have a high viscosity index
B . mix readily with refrigerant
C . have a high freezing point
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When towing in an open seaway，it is important to use a towing line（）.
A . made only of wire rope，due to possible weather conditions
B . that will have the tow on a crest while your vessel is in a trough
C . that will have the tow on a crest while your vessel is on a crest
D . with little dip to gain maximum control of the tow
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VOIP is being implemented in the network and you need to assess the need for QoS. Which of thefollowing network problems would indicate a need to implement QoS features？（）
A . Mis-routed packets
B . Excess jitter
C . Delay of critical traffic
D . Packet loss due to congestion
E . Data link layer broadcast storms
F . FTP connections unsuccessful
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According to a survey which is done by Allen Dordoy in 2002,The number one reason why students plagiarize is not to get a better grade.
A.对
B.错
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At one point, why is Chris forced to stay in a bathroom at a train station with his son?
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In most cases, why do we believe that employee training and development is important?
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Why is brainstorming important?
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Why is Yellowstone National Park important?( )
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In addition to its religious importance, Easter is also a popular secular holiday.
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The reason why we can’t have a 3D printer in our home is ______.
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______was once a very important political institution in Britain while its importance is seriously diminished since the 20th century.
A．The House of Commons
B．The House of Lords
C．The Cabinet
D．The Privy Council
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In planning a manual, which of the following is most important to consider__________
A.Your own experience with the topic of the manual.
B.What the intended readers need to know.
C.What you would like to teach the readers.
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The most important factor in deciding the value of a company is the company's ______.
A．management
B．liquidity
C．market value
D．profitability
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Music is very important in school life because playing a musical instrument can improve______.
A．reading and writing
B．listening and writing
C．maths and reading
D．listening and maths
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Japan is described in the passage as a country that attaches importance to_____.
A．all round development
B．the learning of Western music
C．strict training of children
D．variety in academic studies
此题为多项选择题。
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Why is the change in Australias immigration policy called a reversal？
A．Because the new policy can change the present trend of human smuggling.
B．Because it is backed with both the government and the opposition coalition.
C．Because it includes the reuse of some measures that were abandoned before.
D．Because it has caused the accusation of many human rights groups.
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In planning a manual, which of the following is the most important to consider______？
A.Your own experience with the topic of the manual.
B.What the intended readers need to know.
C.What you would like to teach the readers.
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Why is it important to know your own psychological space needs（）
A．Because everyone's need is unusual in the world
B．Because they affect people to make their own choices
C．Because people don't want to be bothered by their family members
D．Because they are decided by economic reasons
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Though quality is always important in the consumer’s mind, in general, do not expect it to be a given.
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Why is it important to provide the students with a variety of speaking activities?
A．A variety of speaking activities will enable students to cope with different situations in reality.
B．Variety helps to control the activities.
C．Variety helps keep motivation high.
D．Variety may suit students of different learning styles.
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The reason why children learn their mother tongue so well lies partly in the child himself,and partly in the behavior. of the people around him.In the first place,the time of learning the mother tongue is the most favorable of all,namely,the first years of life.A child hears it spoken from morning till night and,what is more important,always in its genuine form,with the rightpronunciation,right intonation,right use of words and right structure.
