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to repeat (a sound) by the reflection of sound waves from asurface
发布时间:
2024-05-06 15:15:45
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相关试题
1.
According to the frequency of sound waves, the sound waves can be divided into: , , and .
2.
how do we hear the amplified sound? 选项: A、Sound waves are picked up by a speaker and converted to a small analog voltage called the audio signal,then the voltage are sent to the microphone. B、Sound waves are picked up by a microphone and converted to a small analog voltage called the audio signal,then the voltage are sent to the speaker. C、Sound waves are picked up by a microphone and converted to a small digital voltage called the audio signal,then the digital voltage are sent to the speaker.
3.
Questions 18 to 20 are based on the following, passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. Sound waves reflected from a hill can be used to calculate the______. 选项: A、Speed of sound B、time between a sound and ifs echo C、height of the hill D、distance of the hill
4.
Sound waves travel in the air in much the same way ____ water waves spread on the water. 选项: A:as B:that C:where D:in which
5.
Sound waves are picked up by a microphone and converted to a small analog voltage called the audio signal.
6.
A sound mind is inseparable from a sound body. The word “sound” means______.选项: A:in good condition B:deep C:correct D:healthy
7.
Which of the following is NOT an example of “metaphorical sound”? A: A distant bell sound in the plum shot B: Hanna’s hopscotch token C: Music from the Gramophone in the monastery D: The piano sound played by Hanna
8.
Which of the following symptoms can occur with minimal ascites 选项: A:peristaltic waves; B:fluctuations; C:succussion splash; D:scratcb sound
9.
A sound which is capable of distinguishing one word or one shape of word from another in a given language is a (an) _.A.sound segmentB.phoneC.phonemeD.allophone
10.
Sound which capable of distinguishing one word or one shape of word from another in a given language is a ___________. 选项: A、allophone B、phone C、phoneme D、sound
11.
_________ is determined by the amplitude of sound wave 选项: A: Sound frequency B: Sound intensity C: Speed of sound
12.
Please repeat the recorded sound.这种新开发的型号已经业内权威机构测试和认证过。
13.
In a sound-powered telephone, the microphone transducer converts ___ from a user’s voice into a minute electrical current, which is then Converted back to sound by a transducer at the other end. 选项: A:air pressure B:barometric pressure C:sound pressure D:light pressure
14.
[填空题]In the historical development of language, sound change is inevitable, such as sound loss, sound a______ and sound movement.
15.
[单选题]The baby slept _____ A for sound sleep B to be sound C a sound sleep D in a sound sleep
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