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【单选题】
以下属于物理层设备的是()A.
中继器
B.
交换机
C.
网桥
D.
网关
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举一反三
【单选题】Since the terrorist attacks of September 11, 2001, the Federal Aviation Agency has added a small security fee to every airplane ticket purchased. This is an example of:
A.
. the benefits principle of tax fairness.
B.
. a lump-sum tax.
C.
. the ability-to-pay principle of tax fairness.
D.
. a profits tax.
【简答题】something that is pointless has no purpose and it is a waste of time doing it
【简答题】Complete each definition by matching the sentence parts. a. alive, such as an animal, bird, or insect. b. difficult because it tests one's abilities. c. it lives or is present in a particular plac...
【简答题】阅读以下文章，选择最佳答案填空。 Since the terrorist attacks on the United States in September, Americans have given millions of dollars to help thousands of victims and their families. A lot of that money was given ...
【单选题】During the period of recent terrorist activities, people _____ not to touch and unattended bag. [ ]
A.
had always been warned
B.
were always being warned
C.
are always warning
D.
always warned
【单选题】It is always satisfying to do something that no one else ______.
A.
did
B.
does
C.
had done
D.
has done
【单选题】A month ago, the British government announced a plan to keep terrorist suspects indefinitely under house arrest (1)_____ the home secretary's say-so, It has been attacked from all sides ever since. Th...
A.
on
B.
by
C.
at
D.
for
【单选题】Can Buildings Be Designed to Resist Terrorist Attack In the aftermath of the terrorist attack on the World Trade Center, structural engineers are trying hard to solve a question that a month ago would...
A.
that was asked by structural engineers a month ago.
B.
that is too difficult for structural engineers to answer even now.
C.
that was never thought of before the terrorist attack.
D.
that terrorists are eager to find a solution to.
【单选题】It is reported in Washington Post that an unknown terrorist group has ______ responsibility for this morning’s bomb attack.
A.
claimed
B.
evaluated
C.
bid
D.
confirmed
【简答题】Since each person has his own range of interests, when the speaker talks about something that is of no personal interest or concern to him, he would "switch off the talking."
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