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    Question

    'SONAR'ismostlyusedby-

    A Doctors Correct Answer Incorrect Answer
    B Engineers Correct Answer Incorrect Answer
    C Astronauts Correct Answer Incorrect Answer
    D Navigators Correct Answer Incorrect Answer

    Solution

    a method or device for detecting and locating objects especially underwater by meansofsoundwavessentouttobereflectedby the objects also : a device for detecting the presenceofavessel(suchasasubmarine)bythe sound it emits in water.

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