MCQOPTIONS
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| 1. |
The internationally accepted frequency range of standard telephone channel is: |
| A. | 3 - 30 kHz |
| B. | 300 - 3400 Hz |
| C. | 30 - 3400 Hz |
| D. | 300 - 2100 Hz |
| Answer» C. 30 - 3400 Hz | |