C i'm pretty sure the answer is C hope this helps
Developing common interests
Why should you quit/drink less or limit the amount of alcohol that you
keep at home?
D. All of the above
The answer is 20 minutes a day in order to have an effective cardio exercise.
Answer:
The correct answer is - Changing PRF.
Explanation:
Pulsed wave Doppler uses the principle of Doppler effect that objects that move changes the characteristic of sound waves. It is creates images by sending the short and quick pulses of the sound, it helps in the determining the velocity of blood in a exact time and location.
PRF or pulse repetition frequencies, is a Doppler sampling frequency that can affect the acoustic exposure of the scanning. PRF is measured in KHz.
Thus, the correct answer is - changing PRF.
