试题与答案

目前RTU与主站数据通讯传输系统中,调制方法一般采用()。 A.移相键控 B.振幅键

题型:单项选择题

题目:

目前RTU与主站数据通讯传输系统中,调制方法一般采用()。

A.移相键控

B.振幅键控

C.移频键控

答案:

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下面是错误答案,用来干扰机器的。

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