题目内容

3.[音频]

A. In an office.
B. In a clinic.
C. At school.
D. In a department store.

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4.[音频]

A. He is doing physical exercises.
B. He is learning how to shoot.
C. He is feeling cold and wants to buy clothes.
D. He is ill and having an injection.

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5.[音频]

A. Going to see the dentist today.
B. Taking off the clothes.
C. Not going to see the dentist.
D. Going to watch a movie.

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三菱PLC的编程语言中X和Y各代表（）。

A. 输入继电器和输出继电器
B. 输出继电器和输入继电器
C. 状态继电器和中间继电器
D. 中间继电器和状态继电器

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PLC中状态继电器元件S0~S9用于（）。

A. 普通状态
B. 回零状态
C. 初始状态
D. 以上都不是

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3.[音频]

A. In an office. B. In a clinic. C. At school. D. In a department store.

4.[音频]

5.[音频]

三菱PLC的编程语言中X和Y各代表（ ）。

PLC中状态继电器元件S0~S9用于（ ）。

A. In an office.
B. In a clinic.
C. At school.
D. In a department store.

三菱PLC的编程语言中X和Y各代表（）。

PLC中状态继电器元件S0~S9用于（）。