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数字段是对在两个相邻的()或等效设备之间具有特定速率的数字信号进行数字传输的途径的总称。
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更多 “ 数字段是对在两个相邻的()或等效设备之间具有特定速率的数字信号进行数字传输的途径的总称。 ” 相关考题
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驻波是两列传播方向相反等幅的波叠加而成的,其特征一是____ . Standing wave is superposed by two columns of waves of equal amplitude in opposite directions of propagation. Its characteristic is:_____.A.相邻两个波节之间的所有质元振动具有相同的振幅; The vibration of all elements between two adjacent nodes has the same amplitude;B.相邻两个波节之间的所有质元振动具有相同的相位; The vibration of all elements between two adjacent nodes has the same phase;C.相邻两个波节之间的所有质元振动具有相反的相位; The vibration of all elements between two adjacent nodes has opposite phase;D.相邻两个波节之间的所有质元振动具有不同的频率; The vibration of all elements between two adjacent nodes has different frequencies;
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