1、 1 2016 2017 1 33 100 100 2 3 12 2 24 1 2 A B 0 0 0 C D 3. 4. A B C D 5. A B C D 6. 1 10 80 1000 15 40 1 53 1 0 A 80g B 800g C 8kg D. 80kg 7 A B C D 8 L1 L2 2 3 A I1 I2 1 1 B U1 U2 3 2 C L1 L2 P1 P2 3 2 D L1 L2 9 A C B D 3 3 A B R1 C F D F 10. L R S R P a b A B C D 11. 15 0.3 A B C D 12. 4.5V L A 0.
2、6A B 1.35W 2.7W C 0.3A 0.5A D ( 12 1 29 ) 13. V 14. / / 15 1800r/min 16 600N 0.1m/s F 250N W 17 100g / / BC J 3 J/ 8 9 10 16 17 18 12 18. / / 4 4V W 19. LED LED 220V 10W 220V 60W 5h 30 1 LED / / 2 220V 60W A 3 LED 220V 60W 4 1 10 LED 10 220V 60W 0.52 / 20. 1kg 70 1.68 10 5 J m 3 q=4.2 10 7 J/m 3 c =
3、4.2 10 3 J/ kg 21. 22 36V 24 A 48V 10s J 23 PZ220-25 h 1 kw h 220V 10(20)A 2500imp/(kw h) 10min 250 W W 24. a b c d ( / ) b ad/dc/cb 9 47 26 27 25 6 1 2 220V 40W 3 26 3 S=10m h=4m 50N F 10s 100N 1 a b c d 24 26 2 3 27 3 1 kg 2 c 3 J/ 3 90% 28. 4 / / 2s 0.8J W 29. 6 1 / / 2 N 3 = A. B. C. D. 4 A B GA
4、 GB / / 30. 3 2 JYK 301 220V 1600W 1.5L F 1/N l1/ cm F2/ N l2/ cm 1 20 2 10 2 15 1. 5 20 3 5 15 /g 10 C /s 20 C /s 30 C /s 28 29(4) 1 ( / / ) ( / ) 2 31. 4 32. 5 R R 1 2 3 / 4 t0 t t c = c 33 13 3.8V 10 6V 1 2 A(5 0.6A) B(10 0.5A) C 20 0.3A A/B/C 3 4 /V /A /W /W 1 3.0 0.36 1.08 2 3.8 0.40 1.52 3 4.5
5、 0.42 1.89 P = W 350 260 520 650 350 220 330 550 1.08+1.52+1.8 9 3 =1.50 P = + - 33 31 30 32 5 R0 S1 S2 1/2 V / S2 1/2 U1 P = 6 P1 P2 P1 P2 P1 P2 / / 12 2 24 1 2 3 4 5 6 7 8 9 10 11 12 B C A B D C A C D C A C 12 1 29 13 220 14 15 15 16 75 80 17 2.52 10 418 5.6 19 1 2 0.27 0.3 3 83.3 4 39 20 30 4 10 -3 21 22 1.5 8 180 23 40 600 4400 24 cb 33 5 9 47 26 27 25 2 6 26 1 3 1 400J (2) 50W 3 10N 27 1 3 1 1.5kg (2) 5.04 10 5 J 3 350s 28 0.4 29 1 _ 2 1 3 C 4 30 1 2 A 31 1 N , 32 1 / 2 3 _ _ 4 _ t -t0 /(t -t0) c _ 33 1 2 B 3 4 1.52 5 2 3.8 , 1 _3.8 U1-3.8 /R0_ 6
