The microprocessor described in the passage will probably be used for_________.
Giải bởi Vietjack
Đáp án C
Thông tin ở đoạn 1: Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise.
=> microprocessor (bộ vi xử lý) được dùng để loại bỏ âm thanh
It never________ my head that such a terrible thing would happen.
You may borrow as many books as you like, provided you show them to ________ is at the checking desk.
How long does it take the children to walk to the golden sandy beach on foot?
The word contest in the last sentence could be replaced by___________.
Sarah delivered a/an ________ appeal to the court and asked for mercy.
