問題詳情
54. A doppler flow meter transmit ultrasound of 10 MHz to measure the blood flow. If the reflected
sound of 9.9 MHz is recorded by the same probe, find the speed of the blood flow. (sound speed
in the tissue is 1500 m/s)
(A) 5.5 m/s
(B) 6.5 m/s
(C) 7.5 m/s
(D) 8.5 m/s
(E) 9.5 m/s
參考答案
答案：C
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中