1. Analog and Digital Signal

作业

1、单选题:
‎Which is the analog signal?‌
选项:
A:

B:
C:  
D:  
答案: 【 

课后作业

1、单选题:
‌Which is the digita signal?‎
选项:
A:
B:
C:  
D:  
答案: 【 

随堂测验

1、填空题:
‎模拟信号‍
答案: 【 analog signal

2、填空题:
‏数字信号​
答案: 【 digital signal

3、填空题:
‎线性放大器​
答案: 【 linear amplifier

4、填空题:
‎连续值‎
答案: 【 continuous value

5、填空题:
‍二进制‌
答案: 【 binary

11 Bluetooth

课后练习

1、判断题:
​Bluetooth technology is free for all the people‏
选项:
A: 正确
B: 错误
答案: 【 正确

随堂测验11

1、填空题:
‌蓝牙​
答案: 【 bluetooth

2、填空题:
​基础设施‍
答案: 【 infrastructure

3、填空题:
​干扰‍
答案: 【 interference

4、填空题:
‌带宽​
答案: 【 bandwidth

5、填空题:
‍信道‌
答案: 【 channel

12 Wireless LAN

三单元测验

1、单选题:
Modulation is the process of shifting spectrum of one center (    ) to another.​‎​
选项:
A: amplitude
B: frequency
C:  phase
D:  
答案: 【 frequency

2、单选题:
Which one is ground-wave propagation? (       )‌‎‌
选项:
A:
B:
C:
D:  
答案: 【 

3、单选题:
 Which propagation mode has the longest transmission distance? (   )‌‌‌
选项:
A: Sky-wave propagation
B: Line-of-sight propagation
C: Ground-wave propagation
D:  
答案: 【 Sky-wave propagation

4、单选题:
‎The first image sensor was invented in(    )‏‎‏
选项:
A: Bell Lab
B: Kodak company
C:  
D:  
答案: 【 Bell Lab

5、单选题:
‍Which is not the characteristics of CMOS(    )‏‍‏
选项:
A:  strong anti-noise ability
B: highly integrated
C:  increasing the rate of final products
D:  
答案: 【 highly integrated

6、单选题:
 Bluetooth technology makes the office in an (    ) status.​‎​
选项:
A: confu

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