1、 2017 100 90 32 2 1 100m 10m 10m A B C D 2 2016 6000 6000 4 km. A.6 km/h, 65 cm B.1.5 km/h, 1.2 m C.6 km/h, 20 cm D.15 km/h,0.6 m 3 ( ) A B C D 4 ( ) A B C D 5 ( ) A B C D 6 ( ) 7 10 30 A 3 B 13 C 23 D 33 8 45m 3 1.29kg/m 3 A. B. C. D. 9 A. B. C. D. 10 2.5mm 2 89kg 8.9 10 3 kg/m 3 A.4m B.40m C.400m
2、D.4000m 11 12 A. B. C. D. 13 14 A. 37 o C B. 35 o C C. 0 o C D. 24 o C 26 o C 15 A. B. C. D. (25 1 16 A B cm. 17 18 f 19 5kg/m 3 Kg/m 3 450g cm 3 0.9 10 3 Kg/m 3 20 5 22 14 21 22 10N F F=50N N F 80N N 23 24 287 0 C 60 0 C 0 C 0 C 25 2 26 27 4 28 (31 1 29 10CM 50CM 1 A B 2 1 3 5 CM 4 3 C 4 30 /cm /cm
3、 1 40 13.5 2 30 15 3 25 16.7 4 20 20 5 15 1 2 3 0 C Min 4 31 1 2 3 32 A B B A (1) (2) B A (3) B (4) 33 0.91g/cm 3 0.93g/cm 3 0.94g/cm 3 0.95g/cm 3 1 A. B. 10g C. g D. , , cm 3(2) g/cm 3 (3) 100 90 30 2 25 1 16 17 18 19 20 21 22 23 24 25 26 27 4 28 31 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 29 1 2 3 4
4、30 1 2 3 4 31 1 2 3 32 1 2 3 4 33 1 2 3 10 34 4 35 6 V0 500cm 3 m0 0.5kg m1=0.4kg p 1.0 10 3 kg/m 3 , p =2.6 10 3 kg/m 3 1 V1 2 V2; 3 m 30 2 1-15 BCCAA BBCBD,BCBBD 25 1 16 B 2.45 17 18 , , , 2 , 19 2.5 50 20 21 22 10 10 23 24 60 60 25-27 4 29 1 2 30 3 4 30 1 2 3 31 1 2 3 32 1 2 3 4 B A 33 1 56 50 2 0.92 3 10
