题目内容

只有第一类线性相位滤波器可以设计低通、高通、带通、带阻滤波器。

A. 对
B. 错

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“I think nothing I sell has effects which could be precisely described as ordinary.” In this sentence, the word "precisely" means ____.

A. simply
B. exactly
C. completely

What is not the image of Alan Austen in this story?

A. timid
B. skeptical
C. hesitant
D. rich

What does the sentence“He pushed open this door, as he had been told to do” suggest about Alan Austen?

A. It suggests that Alan Austen was very nervous and that if he had not been told to, he wouldn't have dared to enter the room.
B. It suggests that Alan Austen was very polite.
C. It suggests that Alan Austen was too shy to open the door.
D. It suggests that Alan Austen was unwilling to pushed open this door.

Why do you think the old man told Austen about the life-cleaner before selling the love potion?

A. He knew that everyone needed life-cleaner.
B. He knew for sure that Austen's possessive love wouldn't last long and he would buythe "chaser" to be free from the women for whom he had precisely bought the love potion
C. He wanted to make more money by selling the life-cleaner.
D. He knew that Alan was a merciless person who liked to kill others.

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