大学MOOC 专业英语(自动化)(江汉大学)1450302396 最新慕课完整章节测试答案
1.AnalogandDigitalSignal
文章目录
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: 【
】
11Bluetooth
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】
12WirelessLAN
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:
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