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[音频]

A. Ken has something wrong with his ears.
B. Ken is better known than before.
C. Ken attended the important lecture.
D. Ken is always absent-minded.

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[音频]

A. The job is hard especially in summer.
B. The job involves a lot of difficulties.
C. The job is challenging but rewarding.
D. The job is inviting only in terms of its pay.

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四工位电动刀架刀位信号由（）个‘0’和（）个‘1’组成。

A. 4、4
B. 1、1
C. 3、1
D. 1、3

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四工位电动刀架，刀位传感器一般是由4个霍尔传感器构成，触发霍尔传感器的磁铁只有一个。

A. 对
B. 错

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简述刀架换刀的动作顺序。

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[音频]

A. Ken has something wrong with his ears. B. Ken is better known than before. C. Ken attended the important lecture. D. Ken is always absent-minded.

[音频]

四工位电动刀架刀位信号由（）个‘0’和（）个‘1’组成。

四工位电动刀架，刀位传感器一般是由4个霍尔传感器构成，触发霍尔传感器的磁铁只有一个。

简述刀架换刀的动作顺序。

A. Ken has something wrong with his ears.
B. Ken is better known than before.
C. Ken attended the important lecture.
D. Ken is always absent-minded.