McqMate
| Q. |
'SONAR' is mostly used by - |
| A. | Doctors |
| B. | Engineers |
| C. | Astronauts |
| D. | Navigators |
| Answer» D. Navigators | |
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Explanation: a method or device for detecting and locating objects especially underwater by means of sound waves sent out to be reflected by the objects also : a device for detecting the presence of a vessel (such as a submarine) by the sound it emits in water. |
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