题目内容

因为格雷码也是无权码，所以也属于BCD码。

A. 对
B. 错

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二进制码1010转换成格雷码为1111。

A. 对
B. 错

格雷码10110转换为二进制码后是11011

A. 对
B. 错

Listen to a conversation and choose the best answer to each of the following questions.What is the relationship between Sharon and Daniel?

A. Teacher and student.
Boyfriend and girlfriend.
C. Mother and son.

[音频]Why is Daniel late today?

A. Because of the heavy traffic.
Because of the bad weather.
C. Because he got up late.