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【单选题】
下列信号的分类方法不正确的是A.
数字信号和离散信号
B.
确定信号和随机信号
C.
周期信号和非周期信号
D.
因果信号与反因果信号
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【单选题】If I fail ___________ (pass) the exam on the first attempt, can I take the exam again?
A.
passing
B.
to pass
【简答题】If I fail (pass)the exam on the first attempt, can I take the exam again?
【单选题】It is not how much we do but how much love we put into what we do _______ matters.
A.
who
B.
which
C.
whom
D.
that
【单选题】将十进制数412.15转换为二进制数,结果是( )
A.
101011.01
B.
001110011.0010
C.
110011100.0010
D.
110010101.111
【单选题】---You look unhappy. Did you fail the tests? --- I ______ the written papers but didn’t pass the oral examination.
A.
went through
B.
went over
C.
got over
D.
got through
【单选题】'Those shirts are very expensive.''Do you know ______ ?'
A.
how much cost him
B.
what do they cost
C.
they cost how much
D.
how much they cost
【单选题】'Those shirts are very expensive, do you know ______?'
A.
how much cost them
B.
who do they cost
C.
they cost how much
D.
what they cost
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