MCQOPTIONS
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| 1. |
The_interference_field_near_the_face_of_a_transducer_is_often_referred_to_as_the_______________$ |
| A. | Fresnel zone |
| B. | Acoustic impedance |
| C. | Exponential field |
| D. | Phasing zone |
| Answer» B. Acoustic impedance | |