A:2Fe3++SO2+2H2O═2Fe2++SO42﹣+4H+
B:H2O2+H2SO4═SO2↑+O2↑+2H2O
C:I2+SO2+2H2O═H2SO4+2HI
D:2Fe3+2I﹣═2Fe2++I2
I want to ____ ( by buy ) a pair of shoes.
一个原子核在中子的轰击下发生一种可能的裂变反应,其裂变方程为+,则下列叙述正确的是( )
(____) It's so big!
(____) It has a short tail.
(____) It's an elephant.
(____) It has a long nose.
(____) It has big ears.