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Key, numeric key 8 (keypad): nose down, key, numeric key 2 (also keypad): nose up, lift height, left key, numeric key 4: aileron of the plane will control the plane to somersault left in the air (be careful for friends who feel dizzy and carsick), right key, numeric key 6; The aileron of the aircraft will control the aircraft to somersault to the right in the air. Number key 5 (keypad): stabilize the aileron of the aircraft, letter G: lower and retract the landing gear (an area on the screen has a word beginning with G, disappearing means retract the landing gear), and H key; Close the control view (only experts can), but the flight will continue. F key: for landing, I don't know what role it plays. Space bar: pause the flight, but don't exit. ESC key: exit.BIM is more and more widely used in the construction industry. Based on various relevant information data of construction projects, building models are established. By adopting BIM, construction companies can use consistent information to design and optimize projects throughout the process, and can also support better communication through visual appearance, so that all parties to the project can understand the cost, construction period and environmental impact. BIM supports architects to better predict the completed buildings before construction, so that they can maintain their competitive advantage in today's increasingly complex business environment.卫讼师恨极了他，只觉什么事到了他嘴里，都成了有理有据的正经行为，真是比他这个老讼师还要奸诈狡猾。面见皇帝的过程也没那么难捱，磕头、高呼万岁，然后皇帝赐两位王爷座，又特别恩赐四位老人和郑氏这个孕妇也坐下说话。3. How do the logical relationships between BLM modules connect?(Editor: Yang Jie)Android Event Distribution Flowchart