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交换型以太网系统中的（），以其为核心联接站点或者网段，端口之间帧的输出和输入已不再受到CSMA/CD媒体访问控制协议的约束。
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【单选题】Which country does George Orwell come from?
A.
U.S.
B.
Britain
C.
Austrilia
D.
Canada
【单选题】According to the inverted triangle structure, Which function does Sentence (1) have?(1)The definition of higher education may vary depending upon the laws and culture of the country involved.(2) In th...
A.
contextualising
B.
defining
C.
focusing
D.
None of the above
【单选题】According to the inverted triangle structure, which function does Sentence (3) have?(1)The definition of higher education may vary depending upon the laws and culture of the country involved.(2)In the...
A.
focusing
B.
contextualising
C.
defining
D.
none of the above
【单选题】In a country that produces only wine and guns, which of the following is least likely to lead to biased growth? a. The amount of usable land has increased substantially. b. The relaxation o f migratio...
A.
B.
C.
D.
D
【单选题】Which country does sean-nós singing come from ?
A.
Austria
B.
England
C.
Ireland
D.
America
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