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Q. |
A disadvantage of using natural quartz crystals in a search unit is that: |
A. | It will dissolve in water |
B. | It is the least effective generator of ultrasonic energy of all commonly used materials |
C. | It easily loses it operating characteristics as it ages |
D. | None of the above is correct |
Answer» B. It is the least effective generator of ultrasonic energy of all commonly used materials |
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