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【简答题】
阐述合理密植的原则
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举一反三
【单选题】某 基带信号的最高频率为 2.7kHz ,为了能够无失真的恢复出原信号,所需的最低采样频率为 ( )
A.
2.7 kHz
B.
6.3 kHz
C.
8.4 kHz
D.
5.4 kHz
【单选题】She asked us to ____ the sheets and bring them downstairs when we leave.
A.
toss
B.
keep back
C.
strip off
D.
turn over
【单选题】When she asked teachers to mark essays and projects...
A.
Michael gave us a map of the city and marked some places of interest to visit.
B.
Mrs.Parry, have you marked our tests yet?
C.
The celebration marked the 100 th anniversary of the staging of the modern Olympic Games.
【单选题】某基带信号的最高频率为 2.7kHz ,为了能够无失真地恢复出原信号,所需的最低采样频率为
A.
2.7kHz
B.
6.3 kHz
C.
8.4 kHz
D.
5.4 kHz
【单选题】She asked us to use college to discover our strengths and practice applying our strengths ______.
A.
conscious
B.
consciously
C.
consciousness
D.
unconscious
【单选题】某基带信号的最高频率为2.7kHz,为了能够无失真地恢复出原始信号,所需的最低采样频率为( )。
A.
2.7kHz
B.
6.3kHz
C.
8.4kHz
D.
5.4kHz
【单选题】—What did the teacher say? —She asked us to stop ________to her. [ ]
A.
listening
B.
to listen
C.
listen
D.
to listening
【单选题】She asked us that we were in a story.
A.
imagine
B.
to imagine
C.
imagined
D.
imagining
【单选题】某基带信号的最高频率为2.7kHZ,为了能够无失真地恢复出原始信号,所需的最低采样频率为( )
A.
2.7kHZ
B.
6.3kHZ
C.
8.4kHZ
D.
5.4kHZ
【判断题】在中国古代,人们把弯曲成直角的手臂的上半部分称为"勾",下半部分称为"股"。我国古代学者把直角三角形较短的直角边称为“勾”,较长的直角边称为“股”,斜边称为“弦”。
A.
正确
B.
错误
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