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【单选题】
下图为( )信号的频谱。A.
交流
B.
直流
C.
正弦
D.
余弦
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【单选题】Assume that a company has a calendar year of January 1, 2018-December 31, 2018. March 15, 2019 was the end of the period for gathering information pertaining to the financial statements. The financial...
A.
January 1, 2018.
B.
March 15, 2019.
C.
March 24, 2019.
D.
December 31, 2018.
【单选题】If a B/L is dated March 5 th , 2018, the insurance should be covered ( ).
A.
on March 5 th , 2018
B.
before March 5 th , 2018
C.
after March 5 th , 2018
D.
on or before March 5 th , 2018
【单选题】My aunt arrived Guangzhou the morning of March 13.
A.
at；in
B.
in；on
C.
in；in
D.
to；on
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