题目内容

在边沿触发的触发器中，既有边沿JK触发器，也有边沿D触发器。

A. 对
B. 错

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在边沿触发器的符号中，“>”代表上升沿触发，“<”代表下降沿触发。

A. 对
B. 错

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异步输入引脚是指受时钟信号控制的引脚，同步输入引脚是指不受时钟信号控制的引脚。

A. 对
B. 错

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Directions: In this section, you'll hear some long conversations. At the end of each conversation, some questions will be asked. Both the conversation and the questions will be spoken only once. After each question, choose the best answer from the four choices marked A, B, C, and D.Question 7 is based on the conversation you have just heard.

A. She is strongly for it.
B. She thinks it is of little use to the people.
C. She thinks it poses a threat to people's life.
D. She thinks it has both advantages and disadvantages.

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Questions 8 is based on the conversation you have just heard.

A. He is strongly against it.
B. He thinks it is the best hope for the future.
C. He thinks it is clean but dangerous to the population.
D. He thinks it will completely replace oil and gas resources in the future.

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在边沿触发的触发器中，既有边沿JK触发器，也有边沿D触发器。

A. 对 B. 错

在边沿触发器的符号中，“>”代表上升沿触发，“<”代表下降沿触发。

异步输入引脚是指受时钟信号控制的引脚，同步输入引脚是指不受时钟信号控制的引脚。

Questions 8 is based on the conversation you have just heard.

A. 对
B. 错