Question

to join plastic surface. together _______ sound is used option 1 ultrasonic 2 infrasonic 3 audible 4 reverberated​

Answer 1

Answer:

ultrasonic

Explanation:

hope answer is correct

Answer 2

⭐⭐ Hey mate ⭐⭐

Here is the answer ::

To join plastic surface together ultrasonic sound is used .

Hope it will be helpful..

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