WHY IS IT IMPORTANT THAT LIFT BE EQUAL ON BOTH SIDES OF THE HELIC...

10. - File thứ 1: De va dap an thi thu lan 2, Anh
Tiếng Anh File thứ 1: De va dap an thi thu lan 2, Anh
10. Why is it important that lift be equal on both sides of the helicopter shaft? A. If there is more lift on one side, the helicopter will flip. B. Dissymmetry of lift makes helicopters fly well. C. Equal lift means that the helicopter will be faster. D. It allows the rotor blade angles to be changed. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 11 to