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【单选题】
速度属于（）指标。A.
总量指标
B.
相对指标
C.
平均指标
D.
变异指标
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反馈参考答案：
举一反三
【单选题】采用Mallat算法分解信号，想提取频率范围为15 ~ 30 Hz的信号分量，采样频率选择多少比较合适？（）
A.
100 Hz
B.
120 Hz
C.
150 Hz
D.
200Hz
【判断题】Determine whether the following statements are true or false. Put a “T” if the statement is true, and put an “F” if the statement is false. Animals can communicate with each other in a complicated way...
A.
正确
B.
错误
【判断题】If timer T0 works in mode 2, the initial values TH0 and TL0 must be the same.
A.
正确
B.
错误
【单选题】If the striped T-shirt and the round-necked shirt are at the same price, 60 Yuan, how much will they cost Jasmine if she can afford them?
A.
120 Yuan
B.
60 Yuan
C.
90 Yuan
D.
30 Yuan
【单选题】All the senior leaders are members of the same family. _____, I’m likely to have to move if I want to get promoted.
A.
Though
B.
Meanwhile
C.
However
D.
Therefore
【判断题】If the input x(t) is a sinusoidal signal, the steady-state output will also be a sinusoidal signal of the same frequency, but with possibly different magnitude only.
A.
正确
B.
错误
【简答题】The graph below shows the turnover of three kinds of retail outlets, all owned by the same company, during a three-year period. Check out the statements below based on the graph. Mark T if the descrip...
【单选题】If you want to have the same kind of living as a retiree, you may spend 20% less monthly than you do now because______.
A.
older people tend to be more frugal
B.
expenses involved in work are saved
C.
public transportation will be cheaper then
D.
older people can do their own cleaning then
【简答题】阅读理解。 If you go to Beijing and Shanghai, you can see the same and the different points between them. In some ways they look the same, in some ways they look different. Both of them have tall buildings...
【单选题】If segments appear in the same position but the mutual substitution does not change the meaning, they are said to be in ____.
A.
contrastive distribution
B.
free variation
C.
complementary distribution
D.
distinctive features
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