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2017年南京大学电子科学与工程学院866信号与通信综合之信号与系统考研仿真模拟题

  摘要

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2017866

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1

A. B. C.0

D.2 C

x 2n 44

2

Z

B

z

3 l

A. B. C. D. 2

A. B. C. D.

3 A. B. C. D.

1A 2A 3A

12

3

A

4

A.8 B.24 C. D.12

B

8

24

12

5

B

W

f t

6 x t

A. B. C. D.

A

2

x t

7

A. B. C. D. B

8

A .

B .

C.

D. C