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【判断题】
软交换一种业务驱动型分组网络，通过业务和呼叫分离和呼叫控制和承载分离，从而实现相对独立的业务体系，使业务独立于网络。A.
正确
B.
错误
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举一反三
【单选题】Tom, you are playing the drum too loudly. Please stop _______ the drum!
A.
playing
B.
play
C.
to play
D.
played
【单选题】Stop please! You are ____________ me!
A.
embarrassing
B.
embarrass
C.
embarrassed
D.
to embarass
【简答题】某地一年内发生 起交通事故的概率为 ,其中 是常数,求当地一年内至少发生一起交通事故的概率
【单选题】The terms of trade deteriorate in devaluing country because __________.
A.
the same quantity of exports brings back fewer foreign goods
B.
the prices of exports expressed in foreign currency are lower than before
C.
the same quantity of foreign goods can be exchanged for more domestic goods
D.
All of the above
【单选题】Please stop ____, you are not_____ here.
A.
smoking; allowed smoking
B.
smoking; allowed to smoke
C.
to smoke; allowed smoking
D.
to smoke; allowed to smoke
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