Questi A. Choose the correct letter A, B, C, or D from the following questions. 1- The unique part in Micro-therapy device that produced high frequency called: A. Dagentron. C. Tanetron. B. Magnetron. D. None of the above. 2- Which law states that for De-Shock device to have an effect on the heart, they must be: A. Joule's law. C. Snell's law, B. Graham's law. D. None of the above. 3-The portion of the tidal volume used to ventilation dead space dose not take part in capillary gas exchange and is therefore A. Removed. C. Remain the same. B. Wasted. D. Added. 4- The solution of troubleshooting (Slow motion) in the low-speed turbine handpiece can be by: A. Remove air pressure. C. Increase air pressure. B. Decrease air pressure. D. Replace the handpiece by new one. 5-A person suffer from muscle weakness and functional paralysis. Which is the best therapeutic modality of choice_ A. Electrotherapy. C. Ultraviolet radiation. B. Infrared. D. Pulsed diathermy. 6- In UV therapeutic device the heat produced when applied voltage across the tube filled with A. Vapor of carbon. B. Carbon & ionized of gas. C. two electrodes made of carbon. D. Argon. B. Which is the best technique in therapeutic instrumentation considering patient safety and why? 1- Open control/Close control Mode (Ventilator). 2- (100 e/ )100 e' (electrosurgery Desiccation Technical). Unipolar/Pipolar (Electrosurgery unit). الممسو

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