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【单选题】
设信号,其中,。若被均匀量化为40个电平,则量化间隔等于( )A.
1.25
B.
1
C.
0.5
D.
0.25
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举一反三
【单选题】In the first paragraph, individual borrowing is cited because ______ .
A.
it shares similarities with the government's Social Security policies
B.
there is no guarantee that it will be profitable in the stock market
C.
it is not proper for the brokerage houses to persuade people to borrow money
D.
it is an indication of the Bush administration's serious concern over the stock market
【简答题】已知变量x,y都是int类型的,希望运行时输入 3 5 使x值为3,y值为5,程序中书写的输入语句应为scanf ;
【简答题】辅助继电器、计时器、计数器、输入和输出继电器的触点可使用()次。