100道航空概论题(国外英文资料).docVIP

100道航空概论题(国外英文资料) Air introduction 1, lighter than air aircraft mainly includes: (c) A. glider and helicopter B. glider and airship C. balloon and airship D. balloon and rotorcraft 2, heavier than air aircraft are: (d) A fixed wing aircraft B. aircraft and helicopter C. fixed wing aircraft and gliders D. fixed wing aircraft and rotorcraft 3, according to the temperature distribution along the height of the atmosphere can be divided into several layers (b) A.4 B.5 C.6 D.7 4, usually in the aircraft flight two layer (c) A. troposphere and ionosphere B. in the stratosphere and mesosphere C. stratosphere D. the stratosphere and mesosphere 5, the fluid state parameter refers to (d) The density of A. B. temperature C. D. all of the above 6, the fluid description is correct (a) A. the compressibility of the fluid velocity, the smaller the greater B. the compressibility of the fluid velocity, the greater the greater the C. the compressibility of the fluid velocity is smaller and smaller D. the compressibility of the fluid velocity and size independent 7, the continuity theorem of the following statement is correct (c) A. flow tube area small flow rate B. large area of high velocity flow tube C. flow velocity area D. none of the above 8, the Bernoulli theorem of the following statements is true (b) The velocity of A. large place, gas pressure The velocity of B. small place, gas pressure The velocity of C. small place, the gas pressure is small D. the above statements are wrong 9, the aircraft can be divided into several categories (b) A. two B. three C. four D. five Three physical characteristics, 10 fluid is (c) A. done, heat transfer, viscosity B. mobility, stretch, elastic C. elasticity, viscosity, heat transfer performance D. flow, heat transfer and viscous 11, the following parameters on the wing isnt correct (c) A. from one end to the other end of the wing span distance call B. root tip chord chord length and the ratio of that ladder than C. wings between the same line