PTR3 选择（PTR3 choice）.doc

PTR3 选择（PTR3 choice） Chapter ix theoretical examination questions 1. The incorrect description of the influence of ice on the aircraft is (C). A. increasing friction resistance of aircraft; B. Approach the stall Angle; C. The lift decreases and the speed of stall decreases. D. Displacement of lift center 2. In the influence of the icing on the aircraft system, the incorrect description is (B). A. when the main control area of the aircraft does not clean up the pollution, the control surface will be frozen in the original position or its motion will be blocked. B. The landing gear will be damaged when the freeze is not removed. But the accumulation of snow/snow on the landing gear and deflection poles does not damage the aircraft; C. it will provide the wrong information when the external sensor probe or hole in the aircraft or the front or near area of the aircraft is contaminated D. the sealing ring of the gate and the cargo hold doors will cause the aircraft to be damaged or damaged when it is left with water vapor or ice. 3. The key parts of ice, snow and frost are not allowed in the exterior. A. fuselage; B. wing front and surface; C. Horizontal tail surfaces; D. Landing gear. The correct description of time is (B) A. keep time to begin with the first application of ice - proof ice - proofing, and end the failure of ice - resistant liquid on the aircraft. B. Keep time to begin with the last application of ice - proof ice - proofing, and end the failure of ice - resistant liquid on the aircraft. C. keep time to begin with the first application of ice - proofing the end of ice - proof liquid, end of the time when the ice - resistant liquid is applied on the aircraft. D. keep time to begin with the last application of ice - proofing the end of the ice - resistant liquid, which ends in the time when the ice - de-icing fluid applied on the aircraft is ineffective. 5. Maintenance personnel and crew members must check the aircraft except ice/anti-ice, and its main insp