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【简答题】
查表求下列函数的拉氏变换: (1) , (2)f(t)=
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举一反三
【简答题】We always hear him_______(sing) a song.
【单选题】The program designed by this director always begins________a pop so ng and ends with audience laughing all the way. [ ]
A.
to
B.
by
C.
as
D.
with
【单选题】This is ______ song I've always told you about. Isn't it ______ beautiful one? [ ]
A.
a, a
B.
a, the
C.
the, the
D.
the, a
【单选题】___ the workers insited on was that they ___ more pay.
A.
That.. must be given
B.
What…should give
C.
Whether… would be given
D.
What… be given
【简答题】We always hear a song_______(sing)
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