11.在電子電路中，增益掉 3dB 代表此電路因頻率響應其輸出訊號之大小為輸入訊號大小 (A) 0.5(B) 2(C) √2(D) 1√2(E) 3 倍

1. To determine the isoelectric point of a protein, first establish that a gel: (A) contains a denaturing detergent that can distribute uniform negative charges over the protein’s surface. (B) exhibits a stable pH gradient when ampholytes become distributed in an electric field. (C) is washed with an antibody specific to the protein of interest. (D) neutralizes all ionic groups on a protein by titrating them with strong bases. (E) relates the unknown protein to a series of protein markers with known molecular weights.

11.在電子電路中，增益掉 3dB 代表此電路因頻率響應其輸出訊號之大小為輸入訊號大小

(A) 0.5
(B) 2
(C) \( \sqrt{2} \)
(D) \( \frac{1}{\sqrt{2}} \)
(E) 3 倍

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相關試卷

11.在電子電路中，增益掉 3dB 代表此電路因頻率響應其輸出訊號之大小為輸入訊號大小 (A) 0.5(B) 2(C) \( \sqrt{2} \)(D) \( \frac{1}{\sqrt{2}} \)(E) 3 倍

相關試題

相關試卷

11.在電子電路中，增益掉 3dB 代表此電路因頻率響應其輸出訊號之大小為輸入訊號大小

(A) 0.5
(B) 2
(C) \( \sqrt{2} \)
(D) \( \frac{1}{\sqrt{2}} \)
(E) 3 倍