1、 2016 I 126 13 6 1 A B C D 2 2015 A B C D 3 A B tRNA C b a D mRNA 4 A A T G C4 B C D 5 A B C D 6 A B C D 7. 2015 8 12 ( NH 4 NO 3 ) (NaCN) (CaC 2 ) A B ( NaCN) C D NH 4 N0 3 NaCN CaC 2 8 2015 A C 15 H 22 O 5B C D 9 A H 2 S0 4 K w B CaC0 3 C NaCI CH 3 COONH 4 D Na 2 S c(H + ) =c( OH - )-2c(H 2 S) -c(
2、HS - ) 10. NA : ZXXK A 46g C 2 H 6 0 7N AB 22.4L 4N AC 14g 3N AD 22.4L 22.4L CH 3 Cl N A11. NaBH 4 B +3 H 2 O 2 Pt/C MnO 2 A BH 4+8OH -8e - =BO 2 - +6H 2 O B Na + b a C 3mol H 2 O 2 3mol D a Mn0 2 12 X Y Z W M X Y z w A W M B WMZXY C Z M D X Y 5 13. Na + Ba 2+ Cl - Br - S0 4 2- SO 3 2- A B C D 8 6 1
3、4 17 18 21 6 3 0 14. A B C D 15 m=lkg g 10m/s 2 A B a=8m/s 2C a=l0m/ s 2D a= l0 2 m s 216 2kg F O W x g =l0m/s 2 A OA 15W B AB 6W C AB 15W D OA 15W 17 1 2 A 2 1 B 2 1 C 2 1 D. 2 1 18 P Q O P Q A B 2:1 C 2:1 D 4:1 19. 5 1 R a b 220 2 A 100Hz B 44V C 0.lA 0.5A D 0. 1A 1nun R 264J 20. A B C D 21. B A B
4、 C D 174 22 32 - 33 40 ) 129 22 6 (l) 50Hz _ (2) 5 0 1 2,3 4 5 A B C D B C D A A _m s 2 23. 9 Rx Rx E( 6V) R(0 1A) G( R g I g R 1 R 2 S (l) G 3V R 1 R 1 _ G 1A _ R 2 R 2 (2) G 24 12 m=2 0kg 0 =9m s 1. 5s 0 25 R=1.2 l0 3 km sin37 =0 6 cos37 =0.8 25 20 r B ab r 60 b B t B o T o E=U/l U l (l) 0 To b E
5、(2) a r v (3) B t T 26 14 I (l) 2CrO 4 2- +2H + -Cr 2 0 7 2 +H 2 0 pH =0 _ (2) pH Cr 3+ pH 6 Cr 3+ ( Cr( OH)3 K sp =6.0 x10 31 10 -5 mol L -l (3) Na 2 CrO 4 Na 2 Cr 2 0 7 M _ N Cr0 3 Cr0 3 (4) Cr0 3 Cr 2 0 3 Cr0 3 Cr 2 (S0 4 ) 3 : & & (5) Cr0 3 750K _ 27. 14 C0 2 NH 3 C0 2 I (1) I H 1 =_kJ mol -1 (2) S_ 0 _ (3)- VL I _ _ A B C 2v ( NH 3 )=v (CO 2 ) D (4)25 2 1 NH 3 CO 2 I 4.8 10 -3mol L -1 I (5) CO n(H 2 O)/ n(CO 2 ) CO 2 CO 2 190 CO 2 _ ( ) C0 2 3 NH 3 40% C0 2 28. 15
