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【简答题】
已知序列x(n)的长度为120点，序列y(n)的长度为185点，若计算x(n)和y(n)的256点圆周卷积，试分析结果中相当于x(n)与y(n)的线性卷积的范围是多少?
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【简答题】You are free to use the resources in the library or on the Internet, but you must _______ a paper written in your own words.
【简答题】1岁时小儿的头围约是（ ）
【简答题】千兆位以太网目前制定了四种有关传输介质的标准为：（）、（）、（）、（）。
【单选题】You are free to use the resources in the library or on the Internet, but you must ________ a paper written in your own words.
A.
turn down
B.
turn in
C.
turn on
D.
turn up
【判断题】On receiving the enquiry, the importer should reply to it as soon as possible.
A.
正确
B.
错误
【判断题】On receiving the enquiry, the importer should reply to it as soon as possible.
A.
正确
B.
错误
【单选题】You are free to use the resources in the library, but you must ________ a paper written in your own words.
A.
turn up
B.
turn down
C.
turn in
D.
turn on
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