问题
填空题
若分析信号的振幅和相位随频率变化的规律，这种分析法称为（）分析法。对表示时间函数的信号直接进行幅度、占用时间、周期和变化规律等方面的分析，这种叫时域分析法。
答案
参考答案：频域
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若分析信号的振幅和相位随频率变化的规律，这种分析法称为（）分析法。对表示时间函数的信号直接进行幅度、占用时间、周期和变化规律等方面的分析，这种叫时域分析法。
参考答案：频域
| 完形填空。 | |||
| How many __1__ of Chinese food do you know? I'd like __2__ you some specials. __3__ 1 is noodles. There are many kinds of noodles in China, like rolled noodles, pulled noodles, knife-cut noodles and fried noodles. All of them __4__ great. Special 2 is __5__. Dumplings, yes, I think you must know __6__. Do you know the famous Kung Fu Panda cartoon movie? There are __7__ kinds of Chinese specials in the movie: noodles and fried (油煎的) dumplings. __8__ we also have another dumplings-boiled (水煮的) dumplings. We often eat boiled dumplings __9__ our Spring Festival. I like Chinese food very much. I hope you __10__ like it. | |||
| ( ) 1. A. kind ( ) 2. A. tell ( ) 3. A. Food ( ) 4. A. is ( ) 5. A. dumpling ( ) 6. A. them ( ) 7. A. some ( ) 8. A. As ( ) 9. A. during ( ) 10. A. too | B. kinds B. tells B. Drink B. am B. dumplings B. they B. many B. Or B. in B. also | C. size C. to tell C. Fruit C. be C. hamburgers C. it C. two C. So C. on C. either | D. sizes D. telling D. Special D. are D. cakes D. me D. second D. But D. of D. very |