20. (A) in (B) through (C) with (D) on

20.
(A) in
(B) through
(C) with
(D) on

答案：登入後查看
統計： A(10), B(9), C(1), D(37), E(0) #1325043

詳解 (共 2 筆)

小刺客湯瑪斯

B1 · 2017/02/07

#1612333

由前面的句子可知，介係詞用on

Mac Liang

B2 · 2017/03/10

#1662120

impact 影響 + on

37. (A) When you are close to where the pebble fell, the waves are clearly in a circle, centered on where the pebble fell. (B) These are measured to ensure compliance with laws that govern acceptable sound emitted from a vehicle. (C) Engineers can use several analysis techniques to identify noise sources including near-field acoustic holography (NAH) and beamforming. (D) Beamforming presents several challenges including simultaneously measuring a large number of microphone sensors, transmitting and saving this large amount of acquired waveform data, and being able to quickly process large data sets.

20.
(A) in
(B) through
(C) with
(D) on

詳解 (共 2 筆)

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