1、 2017 2017 5 31 6 2 1 12 3 36 2 8 3 24 3 6 8 10 12 60 120 1. 1 5 6 11 12 2. 13 16 4 17 20 4 20 3. 21 26 21 22 23 24 25 26 1 3 6 2 13 14 9 16 15 23 3+6 5 3 19 3 26 7 12 26 23 18+4 6 17 20 22 25 29 9 18 24 16 11 3 4 8 16 21 17 20 10 3 1. : 60.28 1 2 3 4 5 6 7 8 9 10 2.795 2.337 2.72 2.278 2.602 2.415
2、2.23 2.587 1.488 1.894 11 12 13-16 17-20 21 22 23 24 25 26 1.104 0.795 6.88 4.1 5.99 4.59 4.93 4.09 1.94 2.5 2. 19. OAC BAD ACO = ADB=90 , B. OA 2 -AB 2 =12, k . x k y x y O C A D B OA OB k. . 25. ABC AB=10cm AC=8cm BC=6cm. P B BA A Q A AC C 2cm PQ t( s) 0 t 4 (1) t PQ BC. (2) AQP S cm 2 , t S . (3) t PQ ABC t . (1) PQ BC AQP ABC t 2 S t 3 t , t PQ ABC , t PQ ABC 1. P B A C Q Q 2. 3. 1. (1) (2) (3) 2. (1) (2) (3) 1. 2. 3. 1. 2. 3. 4. 5.
