【判断题】【消耗次数：1】
单工形式的串行通信，数据传送是双向的。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
关于单工通信方式，下列说法正确的是
①
某一时刻通信双方能同时双向传送数据
②
通信双方只能单向传送数据
③
通信双方不能同时收发数据，但可以在不同时候在两个方向传送
④
上述说法均正确
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