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【单选题】
杆件受到与杆轴线相垂直的外力或外力偶的作用,将产生()变形。A.
轴向拉伸或压缩
B.
弯曲
C.
剪切与挤压
D.
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反馈参考答案：
举一反三
【简答题】二进制信息为1 1 0 1 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 1 1 ,请写出HDB3码。
【简答题】HDB3码为-1 0 0 -1 +1 0 0 0 +1 -1 +1 -1 0 0 -1 +1，原信息代码为（ ）。
【单选题】HDB3 码“+ 0 - + 0 0 0 + 0 0 0 - + - 0 0 - 0 0 0 +”进行译码的结果是______。444
A.
101100010001110010001
B.
101100010001100010001
C.
101100000001110010001
D.
101100000001100000001
【单选题】Dialoge 2(P35) Listen to a dialogue between the police officer and the man who reports a theft.Listen once to get the main idea.Listen again and choose the best answer to each of the following questio...
A.
At a park
B.
In a shopping center
C.
Not known
【单选题】Listen to the interview presented by "Visions of the Future".Listen once to get the main idea.Listen again and choose the best answer to each of the folling questions. (Dialogue 3 P19) 1.What is the t...
A.
City growth and planning in the 21st century.
B.
Population growth in the 21st century.
C.
Transport designing in the 21st century.
【简答题】已知信息代码为 1 0 0 0 0 0 0 0 0 0 1 1，求相应的AMI码、HDB3码、PST码及双相码。
【简答题】已知HDB3码为码为-1 0 1 -1 0 0 -1 1 -1 1 0 0 0 1 -1 0 1 -1，与之对应的原单，与之对应的原单极性二进制码序列为（）。
【简答题】Listen again and fill in the blanks. (1)
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