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【多选题】
对于4点序列【图片】，若直接利用DFT计算其频谱，所需的复数乘法次数为______，若利用基2时间抽取FFT算法计算其频谱，所需的复数乘法次数为______。A.
256
B.
64
C.
32
D.
16
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举一反三
【简答题】(2005，35)某企业购入面值为50000元的复利债券，利率为10％，期限为3年，3年后该债券的本利和为（ ）元。
【单选题】You can infer from this passage that__________
A.
girls usually attended private primary schools
B.
only boys usually attended technical schools
C.
girls did not like going to school
D.
only girls attended classical schools
【单选题】某债券面值为150元，票面利率为10％，期限为5年，某企业要对这种债券进行投资，计划获得12％的报酬率，则债券价格不高于（ ）元时该企业才能进行投资。（PVIFAl2％.5=3.605，PVIFl2％，5=0.567）
A.
141.367
B.
139.125
C.
136.721
D.
132.258
【简答题】某企业购入面值为50000元的复利债券，利率为10%，期限为3年，3年后该债券的本利和为（ ）元。
【简答题】Part A Suppose you are the secretary of the manager of a Chinese company, GAO. You attended the negotiation between GAO and a foreign company. Write a memo of the negotiation. The memo should include:...
【单选题】In what condition can the international driver's license be used in the U.S.?
A.
An Italian student studies for two years.
B.
An Italian immigrant resides for ever.
C.
A Spanish tourist is on a visit for half a year.
D.
A Spanish teacher teaches for three years.
【单选题】为了确保储存商品的安全,防止照明灯发出的热量引起靠近商品的燃烧而发生火灾,货垛必须留有灯距。灯距严格规定不少于( )m。
A.
0.5
B.
0.4
C.
0.3
D.
0.2
【判断题】A non-U.S. corporation or individual can form a partnership with an individual, a corporation or another partnership doing business in the United States.
A.
正确
B.
错误
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