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【多选题】
信号机设在列车运行方向的（）或其所属线路的中心线（）。A.
左侧
B.
上空
C.
右侧
D.
下方
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反馈参考答案：
举一反三
【单选题】46 he handed the medicine to the next musher, Shannon`s face was black from the extreme cold.
A.
Though
B.
Since
C.
When
D.
If
【单选题】The doctor did a lot to reduce the patient's fear ____ he would die of the disease. [ ]
A.
that
B.
which
C.
of which
D.
of it
【简答题】The maximum data rate of any single wireless link can be described by the shannon’s theorem which is related to the（）in hertz，and the（）on the channel A．signal frequency B．bandwidth C．carrier frequency...
【简答题】We are taking____________lesson. And it is __________Shannon's lesson.
【单选题】For Shannon's Theorem:
A.
It does not consider noise on the channel
B.
It is more accurate more the Nyquist's Therom
C.
it uses signal-to-noise ratio
D.
It can only be applied on copper wires
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