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【单选题】
以下数字调制中,不能采用包络检波进行解调的是()。
A.
ASK
B.
OOK
C.
FSK
D.
PSK
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【单选题】听力原文:Henry: Hey. Have you ever heard of Academy Awards, or Oscars? Shirley: Well, I should say I've done more than hearing of it. I know it quite well. Academy Awards or Oscars are given every year in...
A.
A group of learned film producers,
B.
A group of established directors.
C.
A group of enthusiastic audience.
D.
A group of well-known actors.
【简答题】4 个连 1 和 4 个连 0 交替出现的序列,画出单极性非归零码、 AMI 码、 HDB3 码 所对应的波形图。
【单选题】_____ there is no restriction on foreign films, those that win at the Academy Awards are in the minority. [     ]
A.
As
B.
Despite
C.
While
D.
When
【简答题】写出表达式 3*4<5+6 的结果
【单选题】What is one of the advantages of the Academy - Institute awards mentioned in the passage?
A.
They are subsidized by the government.
B.
They are often given to unknown artists.
C.
They are also given to Academy- Institute members.
D.
They influence how the National Endowment for the Arts makes its award decisions.
【单选题】One of the advantages of the Academy-Institute awards mentioned in the passage is that__________.
A.
they are subsidized by the government
B.
they are often given to unknown artists
C.
they can also be given to members of the Academy-Institute
D.
they influence how the National Endowment for the Arts makes its award decisions
【单选题】Program buttons on the taskbar represent ____, or unning,?programs.
A.
open
B.
closed
C.
on air
D.
hibernating
【单选题】The writer didn’t know about Percy Buttons because _______.
A.
a. she was new to the neighbourhood
B.
b. he had never called at that house before
C.
c. he was a beggar
D.
d. he didn’t live near her
【判断题】法院审判所有案件都必须公开审判。
A.
正确
B.
错误
【单选题】Program buttons show you what ____ on the desktop.
A.
open
B.
been recently closed
C.
both a. and b.
D.
neither a. nor b.
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